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<title>Common Pipeline Library Reference Manual: Parameters</title>
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<div id="projectname">Common Pipeline Library Reference Manual
 <span id="projectnumber">6.4.1</span>
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<div class="title">Parameters</div> </div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr class="memitem:ga21c9a26800535c3ca9a55c7f5e96ab7d"><td class="memItemLeft" align="right" valign="top">typedef struct _cpl_parameter_ </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a></td></tr>
<tr class="memdesc:ga21c9a26800535c3ca9a55c7f5e96ab7d"><td class="mdescLeft"> </td><td class="mdescRight">The opaque parameter data type. <a href="#ga21c9a26800535c3ca9a55c7f5e96ab7d"></a><br/></td></tr>
<tr class="separator:ga21c9a26800535c3ca9a55c7f5e96ab7d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac4f0ba6b228fd64906a99bb688285954"><td class="memItemLeft" align="right" valign="top">typedef enum <a class="el" href="group__cpl__parameter.html#gafad9845b73047a0dad8aac0f0af5e545">_cpl_parameter_class_</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gac4f0ba6b228fd64906a99bb688285954">cpl_parameter_class</a></td></tr>
<tr class="memdesc:gac4f0ba6b228fd64906a99bb688285954"><td class="mdescLeft"> </td><td class="mdescRight">The parameter class data type. <a href="#gac4f0ba6b228fd64906a99bb688285954"></a><br/></td></tr>
<tr class="separator:gac4f0ba6b228fd64906a99bb688285954"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab617c85978317cf916b89af327874325"><td class="memItemLeft" align="right" valign="top">typedef enum <a class="el" href="group__cpl__parameter.html#ga9d9ebbe5b417035c63c4b34621eddb7c">_cpl_parameter_mode_</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a></td></tr>
<tr class="memdesc:gab617c85978317cf916b89af327874325"><td class="mdescLeft"> </td><td class="mdescRight">The parameter mode data type. <a href="#gab617c85978317cf916b89af327874325"></a><br/></td></tr>
<tr class="separator:gab617c85978317cf916b89af327874325"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:gafad9845b73047a0dad8aac0f0af5e545"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gafad9845b73047a0dad8aac0f0af5e545">_cpl_parameter_class_</a> { <br/>
  <a class="el" href="group__cpl__parameter.html#ggafad9845b73047a0dad8aac0f0af5e545ab8b59b201344fff05fd814e7de3b8258">CPL_PARAMETER_CLASS_INVALID</a>,
<br/>
  <a class="el" href="group__cpl__parameter.html#ggafad9845b73047a0dad8aac0f0af5e545a0966557df36dde34a5c7c557f831bd79">CPL_PARAMETER_CLASS_VALUE</a>,
<br/>
  <a class="el" href="group__cpl__parameter.html#ggafad9845b73047a0dad8aac0f0af5e545a65e1b5d84eb8494be5d75d75453e9e19">CPL_PARAMETER_CLASS_RANGE</a>,
<br/>
  <a class="el" href="group__cpl__parameter.html#ggafad9845b73047a0dad8aac0f0af5e545adc12bb7af6422bc0071ef62ea1ce84dc">CPL_PARAMETER_CLASS_ENUM</a>
<br/>
}</td></tr>
<tr class="memdesc:gafad9845b73047a0dad8aac0f0af5e545"><td class="mdescLeft"> </td><td class="mdescRight">Supported parameter classes. <a href="group__cpl__parameter.html#gafad9845b73047a0dad8aac0f0af5e545">More...</a><br/></td></tr>
<tr class="separator:gafad9845b73047a0dad8aac0f0af5e545"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9d9ebbe5b417035c63c4b34621eddb7c"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga9d9ebbe5b417035c63c4b34621eddb7c">_cpl_parameter_mode_</a> { <br/>
  <a class="el" href="group__cpl__parameter.html#gga9d9ebbe5b417035c63c4b34621eddb7caf1d6a92075c6a42bdae7f86088e914a5">CPL_PARAMETER_MODE_CLI</a>,
<br/>
  <a class="el" href="group__cpl__parameter.html#gga9d9ebbe5b417035c63c4b34621eddb7caac865a6acf8aead42f57e658b5720399">CPL_PARAMETER_MODE_ENV</a>,
<br/>
  <a class="el" href="group__cpl__parameter.html#gga9d9ebbe5b417035c63c4b34621eddb7ca7c17d1fab4f47452446cd942bdae5c32">CPL_PARAMETER_MODE_CFG</a>
<br/>
}</td></tr>
<tr class="memdesc:ga9d9ebbe5b417035c63c4b34621eddb7c"><td class="mdescLeft"> </td><td class="mdescRight">Supported parameter modes. <a href="group__cpl__parameter.html#ga9d9ebbe5b417035c63c4b34621eddb7c">More...</a><br/></td></tr>
<tr class="separator:ga9d9ebbe5b417035c63c4b34621eddb7c"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga340c79d817d1d517cf624fa532d87bad"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga340c79d817d1d517cf624fa532d87bad">cpl_parameter_delete</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga340c79d817d1d517cf624fa532d87bad"><td class="mdescLeft"> </td><td class="mdescRight">Delete a parameter. <a href="#ga340c79d817d1d517cf624fa532d87bad"></a><br/></td></tr>
<tr class="separator:ga340c79d817d1d517cf624fa532d87bad"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaaab214d98ca37386f23e2582f080ec33"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaaab214d98ca37386f23e2582f080ec33">cpl_parameter_disable</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, <a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> mode)</td></tr>
<tr class="memdesc:gaaab214d98ca37386f23e2582f080ec33"><td class="mdescLeft"> </td><td class="mdescRight">Deactivate a parameter for the given mode. <a href="#gaaab214d98ca37386f23e2582f080ec33"></a><br/></td></tr>
<tr class="separator:gaaab214d98ca37386f23e2582f080ec33"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf6c818f67c843fb7afe871ee96b23dd8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaf6c818f67c843fb7afe871ee96b23dd8">cpl_parameter_dump</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, FILE *stream)</td></tr>
<tr class="memdesc:gaf6c818f67c843fb7afe871ee96b23dd8"><td class="mdescLeft"> </td><td class="mdescRight">Dump the parameter debugging information to the given stream. <a href="#gaf6c818f67c843fb7afe871ee96b23dd8"></a><br/></td></tr>
<tr class="separator:gaf6c818f67c843fb7afe871ee96b23dd8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9880ca26a6d38037791418cad65f8ad8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga9880ca26a6d38037791418cad65f8ad8">cpl_parameter_duplicate</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga9880ca26a6d38037791418cad65f8ad8"><td class="mdescLeft"> </td><td class="mdescRight">Create a copy of a parameter. <a href="#ga9880ca26a6d38037791418cad65f8ad8"></a><br/></td></tr>
<tr class="separator:ga9880ca26a6d38037791418cad65f8ad8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa861e3e10db75f6f987c0971f8934e3e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaa861e3e10db75f6f987c0971f8934e3e">cpl_parameter_enable</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, <a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> mode)</td></tr>
<tr class="memdesc:gaa861e3e10db75f6f987c0971f8934e3e"><td class="mdescLeft"> </td><td class="mdescRight">Activates a parameter for the given mode. <a href="#gaa861e3e10db75f6f987c0971f8934e3e"></a><br/></td></tr>
<tr class="separator:gaa861e3e10db75f6f987c0971f8934e3e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac7dddc10c1172c824140fd88910a28f6"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gac7dddc10c1172c824140fd88910a28f6">cpl_parameter_get_alias</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, <a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> mode)</td></tr>
<tr class="memdesc:gac7dddc10c1172c824140fd88910a28f6"><td class="mdescLeft"> </td><td class="mdescRight">Get the parameter's alias name for the given mode. <a href="#gac7dddc10c1172c824140fd88910a28f6"></a><br/></td></tr>
<tr class="separator:gac7dddc10c1172c824140fd88910a28f6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5052461cceb9bf9b6de9be10fc850f8e"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga5052461cceb9bf9b6de9be10fc850f8e">cpl_parameter_get_bool</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga5052461cceb9bf9b6de9be10fc850f8e"><td class="mdescLeft"> </td><td class="mdescRight">Get the value of the given boolean parameter. <a href="#ga5052461cceb9bf9b6de9be10fc850f8e"></a><br/></td></tr>
<tr class="separator:ga5052461cceb9bf9b6de9be10fc850f8e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga78211c210a365189547e60171374e7f8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__parameter.html#gac4f0ba6b228fd64906a99bb688285954">cpl_parameter_class</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga78211c210a365189547e60171374e7f8">cpl_parameter_get_class</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga78211c210a365189547e60171374e7f8"><td class="mdescLeft"> </td><td class="mdescRight">Get the parameter's class. <a href="#ga78211c210a365189547e60171374e7f8"></a><br/></td></tr>
<tr class="separator:ga78211c210a365189547e60171374e7f8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6b96f59e27738e7df3031bd8fb0eadbb"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga6b96f59e27738e7df3031bd8fb0eadbb">cpl_parameter_get_context</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga6b96f59e27738e7df3031bd8fb0eadbb"><td class="mdescLeft"> </td><td class="mdescRight">Get the context of a parameter. <a href="#ga6b96f59e27738e7df3031bd8fb0eadbb"></a><br/></td></tr>
<tr class="separator:ga6b96f59e27738e7df3031bd8fb0eadbb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga883e755e318c2816c01e99fe16ec1f55"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga883e755e318c2816c01e99fe16ec1f55">cpl_parameter_get_default_bool</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga883e755e318c2816c01e99fe16ec1f55"><td class="mdescLeft"> </td><td class="mdescRight">Get the default value of the given boolean parameter. <a href="#ga883e755e318c2816c01e99fe16ec1f55"></a><br/></td></tr>
<tr class="separator:ga883e755e318c2816c01e99fe16ec1f55"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga68f5f7644d9dba5c7f90e4ecfcb3ce0b"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga68f5f7644d9dba5c7f90e4ecfcb3ce0b">cpl_parameter_get_default_double</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga68f5f7644d9dba5c7f90e4ecfcb3ce0b"><td class="mdescLeft"> </td><td class="mdescRight">Get the default value of the given double parameter. <a href="#ga68f5f7644d9dba5c7f90e4ecfcb3ce0b"></a><br/></td></tr>
<tr class="separator:ga68f5f7644d9dba5c7f90e4ecfcb3ce0b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabbb3c1294a6db917af70e7642b827592"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gabbb3c1294a6db917af70e7642b827592">cpl_parameter_get_default_flag</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gabbb3c1294a6db917af70e7642b827592"><td class="mdescLeft"> </td><td class="mdescRight">Get the presence status flag of the given parameter. <a href="#gabbb3c1294a6db917af70e7642b827592"></a><br/></td></tr>
<tr class="separator:gabbb3c1294a6db917af70e7642b827592"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac685a0bfe4c06aeae671d076ef6ed987"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gac685a0bfe4c06aeae671d076ef6ed987">cpl_parameter_get_default_int</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gac685a0bfe4c06aeae671d076ef6ed987"><td class="mdescLeft"> </td><td class="mdescRight">Get the default value of the given integer parameter. <a href="#gac685a0bfe4c06aeae671d076ef6ed987"></a><br/></td></tr>
<tr class="separator:gac685a0bfe4c06aeae671d076ef6ed987"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga7af02dcb8e93ae4d5e32305594e46553"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga7af02dcb8e93ae4d5e32305594e46553">cpl_parameter_get_default_string</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga7af02dcb8e93ae4d5e32305594e46553"><td class="mdescLeft"> </td><td class="mdescRight">Get the default value of the given string parameter. <a href="#ga7af02dcb8e93ae4d5e32305594e46553"></a><br/></td></tr>
<tr class="separator:ga7af02dcb8e93ae4d5e32305594e46553"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad5e687ea250dca59819e5baadc004636"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gad5e687ea250dca59819e5baadc004636">cpl_parameter_get_double</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gad5e687ea250dca59819e5baadc004636"><td class="mdescLeft"> </td><td class="mdescRight">Get the value of the given double parameter. <a href="#gad5e687ea250dca59819e5baadc004636"></a><br/></td></tr>
<tr class="separator:gad5e687ea250dca59819e5baadc004636"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga319c00b086861840f4ff3d9c400ff006"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga319c00b086861840f4ff3d9c400ff006">cpl_parameter_get_enum_double</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int position)</td></tr>
<tr class="memdesc:ga319c00b086861840f4ff3d9c400ff006"><td class="mdescLeft"> </td><td class="mdescRight">Get the possible values for a double enumeration. <a href="#ga319c00b086861840f4ff3d9c400ff006"></a><br/></td></tr>
<tr class="separator:ga319c00b086861840f4ff3d9c400ff006"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga3a3a5449cac8d77d5f4318993ca2f3dc"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga3a3a5449cac8d77d5f4318993ca2f3dc">cpl_parameter_get_enum_int</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int position)</td></tr>
<tr class="memdesc:ga3a3a5449cac8d77d5f4318993ca2f3dc"><td class="mdescLeft"> </td><td class="mdescRight">Get the possible values for an integer enumeration. <a href="#ga3a3a5449cac8d77d5f4318993ca2f3dc"></a><br/></td></tr>
<tr class="separator:ga3a3a5449cac8d77d5f4318993ca2f3dc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae329fd97b5509baf4403e8d76fa3962f"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gae329fd97b5509baf4403e8d76fa3962f">cpl_parameter_get_enum_size</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gae329fd97b5509baf4403e8d76fa3962f"><td class="mdescLeft"> </td><td class="mdescRight">Get the number of alternatives of an enumeration parameter. <a href="#gae329fd97b5509baf4403e8d76fa3962f"></a><br/></td></tr>
<tr class="separator:gae329fd97b5509baf4403e8d76fa3962f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac8f2d27ae00d7cc8839ed538897b848a"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gac8f2d27ae00d7cc8839ed538897b848a">cpl_parameter_get_enum_string</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int position)</td></tr>
<tr class="memdesc:gac8f2d27ae00d7cc8839ed538897b848a"><td class="mdescLeft"> </td><td class="mdescRight">Get the possible values for a string enumeration. <a href="#gac8f2d27ae00d7cc8839ed538897b848a"></a><br/></td></tr>
<tr class="separator:gac8f2d27ae00d7cc8839ed538897b848a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab745afb7e7c648bbd619d3192eacc0be"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gab745afb7e7c648bbd619d3192eacc0be">cpl_parameter_get_help</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gab745afb7e7c648bbd619d3192eacc0be"><td class="mdescLeft"> </td><td class="mdescRight">Get the description of a parameter. <a href="#gab745afb7e7c648bbd619d3192eacc0be"></a><br/></td></tr>
<tr class="separator:gab745afb7e7c648bbd619d3192eacc0be"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf7415af30d9a951d6475fb811e9f7b18"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaf7415af30d9a951d6475fb811e9f7b18">cpl_parameter_get_id</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gaf7415af30d9a951d6475fb811e9f7b18"><td class="mdescLeft"> </td><td class="mdescRight">Get the numerical identifier of the given parameter. <a href="#gaf7415af30d9a951d6475fb811e9f7b18"></a><br/></td></tr>
<tr class="separator:gaf7415af30d9a951d6475fb811e9f7b18"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga207f7eef6b9d80d5962b62f8283756d7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga207f7eef6b9d80d5962b62f8283756d7">cpl_parameter_get_int</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga207f7eef6b9d80d5962b62f8283756d7"><td class="mdescLeft"> </td><td class="mdescRight">Get the value of the given integer parameter. <a href="#ga207f7eef6b9d80d5962b62f8283756d7"></a><br/></td></tr>
<tr class="separator:ga207f7eef6b9d80d5962b62f8283756d7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga27b7fe4a8ba5b6694a9c0d34bfa9a570"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga27b7fe4a8ba5b6694a9c0d34bfa9a570">cpl_parameter_get_name</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga27b7fe4a8ba5b6694a9c0d34bfa9a570"><td class="mdescLeft"> </td><td class="mdescRight">Get the name of a parameter. <a href="#ga27b7fe4a8ba5b6694a9c0d34bfa9a570"></a><br/></td></tr>
<tr class="separator:ga27b7fe4a8ba5b6694a9c0d34bfa9a570"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga700a83a23c52a7c6586b14a1f323d1ab"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga700a83a23c52a7c6586b14a1f323d1ab">cpl_parameter_get_range_max_double</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga700a83a23c52a7c6586b14a1f323d1ab"><td class="mdescLeft"> </td><td class="mdescRight">Get the maximum value of a double range parameter. <a href="#ga700a83a23c52a7c6586b14a1f323d1ab"></a><br/></td></tr>
<tr class="separator:ga700a83a23c52a7c6586b14a1f323d1ab"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9e8df2b7a8513babd59f6335b983b4d5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga9e8df2b7a8513babd59f6335b983b4d5">cpl_parameter_get_range_max_int</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga9e8df2b7a8513babd59f6335b983b4d5"><td class="mdescLeft"> </td><td class="mdescRight">Get the maximum value of an integer range parameter. <a href="#ga9e8df2b7a8513babd59f6335b983b4d5"></a><br/></td></tr>
<tr class="separator:ga9e8df2b7a8513babd59f6335b983b4d5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gace376943319d0a5116764b687cd506f4"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gace376943319d0a5116764b687cd506f4">cpl_parameter_get_range_min_double</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gace376943319d0a5116764b687cd506f4"><td class="mdescLeft"> </td><td class="mdescRight">Get the minimum value of a double range parameter. <a href="#gace376943319d0a5116764b687cd506f4"></a><br/></td></tr>
<tr class="separator:gace376943319d0a5116764b687cd506f4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5d51f315eddecdd77ad015da3474f4f1"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga5d51f315eddecdd77ad015da3474f4f1">cpl_parameter_get_range_min_int</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga5d51f315eddecdd77ad015da3474f4f1"><td class="mdescLeft"> </td><td class="mdescRight">Get the minimum value of an integer range parameter. <a href="#ga5d51f315eddecdd77ad015da3474f4f1"></a><br/></td></tr>
<tr class="separator:ga5d51f315eddecdd77ad015da3474f4f1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab42fa99c9a0234a1bb0235c4883e3824"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gab42fa99c9a0234a1bb0235c4883e3824">cpl_parameter_get_string</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gab42fa99c9a0234a1bb0235c4883e3824"><td class="mdescLeft"> </td><td class="mdescRight">Get the value of the given string parameter. <a href="#gab42fa99c9a0234a1bb0235c4883e3824"></a><br/></td></tr>
<tr class="separator:gab42fa99c9a0234a1bb0235c4883e3824"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab750e42319c06a6615fcf89239c35776"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gab750e42319c06a6615fcf89239c35776">cpl_parameter_get_tag</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:gab750e42319c06a6615fcf89239c35776"><td class="mdescLeft"> </td><td class="mdescRight">Get the parameter's user tag. <a href="#gab750e42319c06a6615fcf89239c35776"></a><br/></td></tr>
<tr class="separator:gab750e42319c06a6615fcf89239c35776"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga07a58b472b9c635e98292ca7ea4dce64"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga07a58b472b9c635e98292ca7ea4dce64">cpl_parameter_get_type</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self)</td></tr>
<tr class="memdesc:ga07a58b472b9c635e98292ca7ea4dce64"><td class="mdescLeft"> </td><td class="mdescRight">Get the parameter's value type. <a href="#ga07a58b472b9c635e98292ca7ea4dce64"></a><br/></td></tr>
<tr class="separator:ga07a58b472b9c635e98292ca7ea4dce64"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9fc9039a933877d2d2d44d8a2e2fb00c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga9fc9039a933877d2d2d44d8a2e2fb00c">cpl_parameter_is_enabled</a> (const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, <a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> mode)</td></tr>
<tr class="memdesc:ga9fc9039a933877d2d2d44d8a2e2fb00c"><td class="mdescLeft"> </td><td class="mdescRight">Get the parameter's activity status for the environment context. <a href="#ga9fc9039a933877d2d2d44d8a2e2fb00c"></a><br/></td></tr>
<tr class="separator:ga9fc9039a933877d2d2d44d8a2e2fb00c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga422fc68d4eb345c1a558ac6f6f104cf9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga422fc68d4eb345c1a558ac6f6f104cf9">cpl_parameter_new_enum</a> (const char *name, <a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> type, const char *description, const char *context,...)</td></tr>
<tr class="memdesc:ga422fc68d4eb345c1a558ac6f6f104cf9"><td class="mdescLeft"> </td><td class="mdescRight">Create a new enumeration parameter. <a href="#ga422fc68d4eb345c1a558ac6f6f104cf9"></a><br/></td></tr>
<tr class="separator:ga422fc68d4eb345c1a558ac6f6f104cf9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0e1bacfbcb11e913ad996539744a1d89"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga0e1bacfbcb11e913ad996539744a1d89">cpl_parameter_new_range</a> (const char *name, <a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> type, const char *description, const char *context,...)</td></tr>
<tr class="memdesc:ga0e1bacfbcb11e913ad996539744a1d89"><td class="mdescLeft"> </td><td class="mdescRight">Create a new range parameter. <a href="#ga0e1bacfbcb11e913ad996539744a1d89"></a><br/></td></tr>
<tr class="separator:ga0e1bacfbcb11e913ad996539744a1d89"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga15e409fadfe1060e48d4b02ccbf27fb2"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga15e409fadfe1060e48d4b02ccbf27fb2">cpl_parameter_new_value</a> (const char *name, <a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> type, const char *description, const char *context,...)</td></tr>
<tr class="memdesc:ga15e409fadfe1060e48d4b02ccbf27fb2"><td class="mdescLeft"> </td><td class="mdescRight">Create a new value parameter. <a href="#ga15e409fadfe1060e48d4b02ccbf27fb2"></a><br/></td></tr>
<tr class="separator:ga15e409fadfe1060e48d4b02ccbf27fb2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga7013d2ea2f85094df3cafe0a9a2b14a5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga7013d2ea2f85094df3cafe0a9a2b14a5">cpl_parameter_set_alias</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, <a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> mode, const char *alias)</td></tr>
<tr class="memdesc:ga7013d2ea2f85094df3cafe0a9a2b14a5"><td class="mdescLeft"> </td><td class="mdescRight">Set alias names for the given parameter. <a href="#ga7013d2ea2f85094df3cafe0a9a2b14a5"></a><br/></td></tr>
<tr class="separator:ga7013d2ea2f85094df3cafe0a9a2b14a5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gafb9106037e8f4a7ab758b1f0884fe817"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gafb9106037e8f4a7ab758b1f0884fe817">cpl_parameter_set_bool</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int value)</td></tr>
<tr class="memdesc:gafb9106037e8f4a7ab758b1f0884fe817"><td class="mdescLeft"> </td><td class="mdescRight">Assign a boolean value to a parameter. <a href="#gafb9106037e8f4a7ab758b1f0884fe817"></a><br/></td></tr>
<tr class="separator:gafb9106037e8f4a7ab758b1f0884fe817"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf3a94a61d5ba8b1b487222a824f5d2e8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaf3a94a61d5ba8b1b487222a824f5d2e8">cpl_parameter_set_default_bool</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int value)</td></tr>
<tr class="memdesc:gaf3a94a61d5ba8b1b487222a824f5d2e8"><td class="mdescLeft"> </td><td class="mdescRight">Modify the default value of a boolean parameter. <a href="#gaf3a94a61d5ba8b1b487222a824f5d2e8"></a><br/></td></tr>
<tr class="separator:gaf3a94a61d5ba8b1b487222a824f5d2e8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac19581a940771dcd493758c0bf568471"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gac19581a940771dcd493758c0bf568471">cpl_parameter_set_default_double</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, double value)</td></tr>
<tr class="memdesc:gac19581a940771dcd493758c0bf568471"><td class="mdescLeft"> </td><td class="mdescRight">Modify the default value of a double parameter. <a href="#gac19581a940771dcd493758c0bf568471"></a><br/></td></tr>
<tr class="separator:gac19581a940771dcd493758c0bf568471"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf8aa64b3d09471de5101bc305c507f89"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaf8aa64b3d09471de5101bc305c507f89">cpl_parameter_set_default_flag</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int status)</td></tr>
<tr class="memdesc:gaf8aa64b3d09471de5101bc305c507f89"><td class="mdescLeft"> </td><td class="mdescRight">Change the presence status flag of the given parameter. <a href="#gaf8aa64b3d09471de5101bc305c507f89"></a><br/></td></tr>
<tr class="separator:gaf8aa64b3d09471de5101bc305c507f89"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaca8417e32bf4ff3cae23d131a5c365f8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaca8417e32bf4ff3cae23d131a5c365f8">cpl_parameter_set_default_int</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int value)</td></tr>
<tr class="memdesc:gaca8417e32bf4ff3cae23d131a5c365f8"><td class="mdescLeft"> </td><td class="mdescRight">Modify the default value of an integer parameter. <a href="#gaca8417e32bf4ff3cae23d131a5c365f8"></a><br/></td></tr>
<tr class="separator:gaca8417e32bf4ff3cae23d131a5c365f8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1f21b4b888c016418597edb4f405ab4b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga1f21b4b888c016418597edb4f405ab4b">cpl_parameter_set_default_string</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, const char *value)</td></tr>
<tr class="memdesc:ga1f21b4b888c016418597edb4f405ab4b"><td class="mdescLeft"> </td><td class="mdescRight">Modify the default value of a string parameter. <a href="#ga1f21b4b888c016418597edb4f405ab4b"></a><br/></td></tr>
<tr class="separator:ga1f21b4b888c016418597edb4f405ab4b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad156ecf3f7bf623f9ea618b226f1fdd9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gad156ecf3f7bf623f9ea618b226f1fdd9">cpl_parameter_set_double</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, double value)</td></tr>
<tr class="memdesc:gad156ecf3f7bf623f9ea618b226f1fdd9"><td class="mdescLeft"> </td><td class="mdescRight">Assign a double value to a parameter. <a href="#gad156ecf3f7bf623f9ea618b226f1fdd9"></a><br/></td></tr>
<tr class="separator:gad156ecf3f7bf623f9ea618b226f1fdd9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0fcabc63505884f4a7a573dd028649d5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga0fcabc63505884f4a7a573dd028649d5">cpl_parameter_set_id</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int id)</td></tr>
<tr class="memdesc:ga0fcabc63505884f4a7a573dd028649d5"><td class="mdescLeft"> </td><td class="mdescRight">Set the numerical identifier of the given parameter. <a href="#ga0fcabc63505884f4a7a573dd028649d5"></a><br/></td></tr>
<tr class="separator:ga0fcabc63505884f4a7a573dd028649d5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga4e42ce7d13602fe6bfdfcab49d8c275e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#ga4e42ce7d13602fe6bfdfcab49d8c275e">cpl_parameter_set_int</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, int value)</td></tr>
<tr class="memdesc:ga4e42ce7d13602fe6bfdfcab49d8c275e"><td class="mdescLeft"> </td><td class="mdescRight">Assign an integer value to a parameter. <a href="#ga4e42ce7d13602fe6bfdfcab49d8c275e"></a><br/></td></tr>
<tr class="separator:ga4e42ce7d13602fe6bfdfcab49d8c275e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad03afbcb85adb7a0d350c6336c00fb9a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gad03afbcb85adb7a0d350c6336c00fb9a">cpl_parameter_set_string</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, const char *value)</td></tr>
<tr class="memdesc:gad03afbcb85adb7a0d350c6336c00fb9a"><td class="mdescLeft"> </td><td class="mdescRight">Assign a string value to a parameter. <a href="#gad03afbcb85adb7a0d350c6336c00fb9a"></a><br/></td></tr>
<tr class="separator:gad03afbcb85adb7a0d350c6336c00fb9a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaedaf77a36ae08fc906c665df465e986b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cpl__parameter.html#gaedaf77a36ae08fc906c665df465e986b">cpl_parameter_set_tag</a> (<a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> *self, const char *tag)</td></tr>
<tr class="memdesc:gaedaf77a36ae08fc906c665df465e986b"><td class="mdescLeft"> </td><td class="mdescRight">Set the tag of the given parameter. <a href="#gaedaf77a36ae08fc906c665df465e986b"></a><br/></td></tr>
<tr class="separator:gaedaf77a36ae08fc906c665df465e986b"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>This module implements a class of data types which can be used to manage context specific, named parameters. They provide a standard way to pass, for instance, command line information to different components of an application.</p>
<p>The fundamental parts of a parameter are its name, a context to which it belongs (a specific component of an application for instance), its current value and a default value.</p>
<p>The implementation supports three classes of parameters:</p>
<ul>
<li>A plain value</li>
<li>A range of values</li>
<li>An enumeration value</li>
</ul>
<p>When a parameter is created it is created for a particular value type. The type of a parameter's current and default value may be (cf. <a class="el" href="group__cpl__type.html">Type codes</a>):</p>
<ul>
<li><code>CPL_TYPE_BOOL</code> </li>
<li><code>CPL_TYPE_INT</code> </li>
<li><code>CPL_TYPE_DOUBLE</code> </li>
<li><code>CPL_TYPE_STRING</code> </li>
</ul>
<p>When a value is assigned to a parameter, the different parameter classes behave differently. For a plain value, no checks are applied to the data value to be assigned. For a range or an enumeration, on the other hand, the value to be stored is validated with respect to the minimum and maximum value of the range and the list of enumeration alternatives respectively. If the value is invalid, an error is reported.</p>
<dl class="section note"><dt>Note</dt><dd>The validation of parameter values is not yet implemented.</dd></dl>
<p>The functions to create a new parameter of a particular class are polymorphic and accept any value type mentioned above to initialise the parameter to create. This is accomplished by using a variable argument list. The number and type of the parameters expected by these functions is determined from the parameter class and the indicated value type.</p>
<p>The constructor of a plain value expects a single value, the parameter's default value, which <em>must</em> be of the appropriate type, as argument while the constructor for a range expects the default value, the minimum and the maximum value. The constructor for an enumeration expects as arguments the default value, the number of alternatives following and the list of alternatives. Note that the default value must be a member of the list of alternative enumeration values.</p>
<p>An example of how parameters of the different classes are created and destroyed is shown below: </p>
<div class="fragment"><div class="line"><a class="code" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d" title="The opaque parameter data type.">cpl_parameter</a> *value;</div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d" title="The opaque parameter data type.">cpl_parameter</a> *range;</div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d" title="The opaque parameter data type.">cpl_parameter</a> *enumeration;</div>
<div class="line"></div>
<div class="line">...</div>
<div class="line"></div>
<div class="line">value = <a class="code" href="group__cpl__parameter.html#ga15e409fadfe1060e48d4b02ccbf27fb2" title="Create a new value parameter.">cpl_parameter_new_value</a>(<span class="stringliteral">"Value"</span>, <a class="code" href="group__cpl__type.html#gga3f03371e201544e9115b40065e47f086ae333db5ccea0813ccd892525b4ba1345">CPL_TYPE_INT</a>,</div>
<div class="line"> <span class="stringliteral">"This is a plain value of type integer"</span>,</div>
<div class="line"> <span class="stringliteral">"Example"</span>,</div>
<div class="line"> -1);</div>
<div class="line"></div>
<div class="line">range = <a class="code" href="group__cpl__parameter.html#ga0e1bacfbcb11e913ad996539744a1d89" title="Create a new range parameter.">cpl_parameter_new_range</a>(<span class="stringliteral">"Range"</span>, <a class="code" href="group__cpl__type.html#gga3f03371e201544e9115b40065e47f086a4923f03f3a673edd344b0d81835ca69e">CPL_TYPE_DOUBLE</a>,</div>
<div class="line"> <span class="stringliteral">"This is a value range of type double"</span>,</div>
<div class="line"> <span class="stringliteral">"Example"</span>,</div>
<div class="line"> 0.5, 0.0, 1.0);</div>
<div class="line"></div>
<div class="line">enumeration = <a class="code" href="group__cpl__parameter.html#ga422fc68d4eb345c1a558ac6f6f104cf9" title="Create a new enumeration parameter.">cpl_parameter_new_enum</a>(<span class="stringliteral">"Enum"</span>, <a class="code" href="group__cpl__type.html#gga3f03371e201544e9115b40065e47f086a8c58196493fdac6c0424560417cd6bf8">CPL_TYPE_STRING</a>,</div>
<div class="line"> <span class="stringliteral">"This is an enumeration of type "</span></div>
<div class="line"> <span class="stringliteral">"string"</span>,</div>
<div class="line"> <span class="stringliteral">"Example"</span>,</div>
<div class="line"> <span class="stringliteral">"first"</span>, 3, <span class="stringliteral">"first"</span>, <span class="stringliteral">"second"</span>,</div>
<div class="line"> <span class="stringliteral">"third"</span>);</div>
<div class="line"></div>
<div class="line">...</div>
<div class="line"></div>
<div class="line">cpl_parameter_delete(value);</div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga340c79d817d1d517cf624fa532d87bad" title="Delete a parameter.">cpl_parameter_delete</a>(range);</div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga340c79d817d1d517cf624fa532d87bad" title="Delete a parameter.">cpl_parameter_delete</a>(enumeration);</div>
</div><!-- fragment --><p>After the parameter has been created and initialised the parameters current value equals its default value. The initialisation values are copied into the parameter, i.e. if an initialiser value resides in dynamically allocated memory, it can be deallocated after the parameter has been initialised without affecting the created parameter.</p>
<dl class="section note"><dt>Note</dt><dd>A variable argument list allows only limited type checking. Therefore, code explicitly what you mean and double check the constructor calls that the number of arguments and the types of the elements of the variable argument list are what the constructor expects.</dd></dl>
<dl class="section user"><dt>Synopsis:</dt><dd><div class="fragment"><div class="line"><span class="preprocessor">#include <cpl_parameter.h></span></div>
</div><!-- fragment --> </dd></dl>
<h2 class="groupheader">Typedef Documentation</h2>
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<td class="memname">typedef struct _cpl_parameter_ <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a></td>
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<p>The opaque parameter data type. </p>
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<td class="memname">typedef enum <a class="el" href="group__cpl__parameter.html#gafad9845b73047a0dad8aac0f0af5e545">_cpl_parameter_class_</a> <a class="el" href="group__cpl__parameter.html#gac4f0ba6b228fd64906a99bb688285954">cpl_parameter_class</a></td>
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<p>The parameter class data type. </p>
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<td class="memname">typedef enum <a class="el" href="group__cpl__parameter.html#ga9d9ebbe5b417035c63c4b34621eddb7c">_cpl_parameter_mode_</a> <a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a></td>
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<p>The parameter mode data type. </p>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<td class="memname">enum <a class="el" href="group__cpl__parameter.html#gafad9845b73047a0dad8aac0f0af5e545">_cpl_parameter_class_</a></td>
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<p>Supported parameter classes. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="ggafad9845b73047a0dad8aac0f0af5e545ab8b59b201344fff05fd814e7de3b8258"></a>CPL_PARAMETER_CLASS_INVALID</em> </td><td>
<p>Parameter of undefined or invalid class. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ggafad9845b73047a0dad8aac0f0af5e545a0966557df36dde34a5c7c557f831bd79"></a>CPL_PARAMETER_CLASS_VALUE</em> </td><td>
<p>Parameter representing a plain value. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ggafad9845b73047a0dad8aac0f0af5e545a65e1b5d84eb8494be5d75d75453e9e19"></a>CPL_PARAMETER_CLASS_RANGE</em> </td><td>
<p>Parameter representing a range of values. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ggafad9845b73047a0dad8aac0f0af5e545adc12bb7af6422bc0071ef62ea1ce84dc"></a>CPL_PARAMETER_CLASS_ENUM</em> </td><td>
<p>Parameter representing an enumeration value. </p>
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<td class="memname">enum <a class="el" href="group__cpl__parameter.html#ga9d9ebbe5b417035c63c4b34621eddb7c">_cpl_parameter_mode_</a></td>
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<p>Supported parameter modes. </p>
<p>The parameter mode is used to set or get context specific parameter attributes. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="gga9d9ebbe5b417035c63c4b34621eddb7caf1d6a92075c6a42bdae7f86088e914a5"></a>CPL_PARAMETER_MODE_CLI</em> </td><td>
<p>Command line mode of the parameter. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga9d9ebbe5b417035c63c4b34621eddb7caac865a6acf8aead42f57e658b5720399"></a>CPL_PARAMETER_MODE_ENV</em> </td><td>
<p>Environment variable mode of the parameter. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga9d9ebbe5b417035c63c4b34621eddb7ca7c17d1fab4f47452446cd942bdae5c32"></a>CPL_PARAMETER_MODE_CFG</em> </td><td>
<p>Configuration file mode of the parameter. </p>
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</dd>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">void cpl_parameter_delete </td>
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<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Delete a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter to delete.</td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>Nothing.</dd></dl>
<p>The function deletes a parameter of any class and type. All memory resources acquired by the parameter during its usage are released. If the parameter <em>self</em> is <code>NULL</code>, nothing is done and no error is set. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_disable </td>
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<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramtype"><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> </td>
<td class="paramname"><em>mode</em> </td>
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<p>Deactivate a parameter for the given mode. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">mode</td><td>The parameter mode.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
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<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<td class="ecl">CPL_ERROR_ILLEGAL_INPUT </td><td class="ecr">The parameter mode <em>mode</em> is not supported. </td></tr>
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<p>The function disables the parameter <em>self</em> for the given mode <em>mode</em>. </p>
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<td class="memname">void cpl_parameter_dump </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Dump the parameter debugging information to the given stream. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter. </td></tr>
<tr><td class="paramname">stream</td><td>The output stream to use.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Nothing.</dd></dl>
<p>The function dumps the contents of of the parameter <em>self</em> to the output stream <em>stream</em>. If <em>stream</em> is <code>NULL</code> the function writes to the standard output. If <em>self</em> is <code>NULL</code> the function does nothing. </p>
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<td class="memname"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a>* cpl_parameter_duplicate </td>
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<p>Create a copy of a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter to copy.</td></tr>
</table>
</dd>
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<dl class="section return"><dt>Returns</dt><dd>The copy of the given parameter, or <code>NULL</code> in case of an error. In the latter case an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
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<dd><table class="ec" align="center">
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<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<p>The function returns a copy of the parameter <em>self</em>. The copy is a deep copy, i.e. all parameter properties are copied. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_enable </td>
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<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramtype"><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> </td>
<td class="paramname"><em>mode</em> </td>
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<p>Activates a parameter for the given mode. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">mode</td><td>The parameter mode.</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
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<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<td class="ecl">CPL_ERROR_ILLEGAL_INPUT </td><td class="ecr">The parameter mode <em>mode</em> is not supported. </td></tr>
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<p>The function enables the parameter <em>self</em> for the given mode <em>mode</em>. </p>
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<td class="memname">const char* cpl_parameter_get_alias </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<td class="paramtype"><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> </td>
<td class="paramname"><em>mode</em> </td>
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<p>Get the parameter's alias name for the given mode. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">mode</td><td>The parameter mode.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's context specific alias name. If no alias name was previously assigned the function returns <code>NULL</code>. If an error occurs the function returns <code>NULL</code> and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<td class="ecl">CPL_ERROR_ILLEGAL_INPUT </td><td class="ecr">The parameter mode <em>mode</em> is not supported. </td></tr>
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<p>The function retrieves the read-only alias name of the parameter <em>self</em>. The context for which an alias is retrieved is selected by the <em>mode</em>. The functions accepts the parameter modes <code>CPL_PARAMETER_MODE_CFG</code>, <code>CPL_PARAMETER_MODE_CLI</code> and <code>CPL_PARAMETER_MODE_ENV</code>.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325" title="The parameter mode data type.">cpl_parameter_mode</a> </dd></dl>
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<td class="memname">int cpl_parameter_get_bool </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Get the value of the given boolean parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A boolean parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the integer representation of the parameter's boolean value. <code>TRUE</code> is represented as non-zero value; whereas 0 indicates <code>FALSE</code>. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
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<dt><b>Errors</b></dt>
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<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_BOOL</code>. </td></tr>
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<p>The current boolean value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname"><a class="el" href="group__cpl__parameter.html#gac4f0ba6b228fd64906a99bb688285954">cpl_parameter_class</a> cpl_parameter_get_class </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Get the parameter's class. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's class identifier. The function returns <code>CPL_PARAMETER_CLASS_INVALID</code> if <em>self</em> is not a valid parameter, but <code>NULL</code>. In this case an appropriate error code is also set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<p>The class identifier of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">const char* cpl_parameter_get_context </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Get the context of a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the context of the parameter, or <code>NULL</code> if <em>self</em> is not a valid parameter but <code>NULL</code>. In the latter case an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function returns the read-only context to which the parameter <em>self</em> belongs. The parameter's context <b>must</b> not be modified using the returned pointer. </p>
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<td class="memname">int cpl_parameter_get_default_bool </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Get the default value of the given boolean parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A boolean parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the integer representation of the parameter's default boolean value. <code>TRUE</code> is represented as non-zero value; whereas 0 indicates <code>FALSE</code>. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_BOOL</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current boolean default value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">double cpl_parameter_get_default_double </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the default value of the given double parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An double parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's default double value. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_DOUBLE</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current double default value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">int cpl_parameter_get_default_flag </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the presence status flag of the given parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the current setting of the parameters presence flag. If the parameter is present the function returns 1 and 0 otherwise. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function indicates whether the given parameter <em>self</em> was seen by an application while processing the input from the command line, the environment and/or a configuration file. If the parameter was seen the application may set this status flag and query it later using this function.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#gaf8aa64b3d09471de5101bc305c507f89" title="Change the presence status flag of the given parameter.">cpl_parameter_set_default_flag()</a> </dd></dl>
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<td class="memname">int cpl_parameter_get_default_int </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the default value of the given integer parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An integer parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's default integer value. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current integer default value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">const char* cpl_parameter_get_default_string </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the default value of the given string parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An string parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's default string value. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_STRING</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current read-only string default value of the parameter <em>self</em> is retrieved. If <em>self</em> is not a valid pointer the error code <code>CPL_ERROR_NULL_INPUT</code> is set on return. Also, if the parameter <em>self</em> is not an string parameter, i.e. the parameter's type is different from <code>CPL_TYPE_INT</code>, the error code <code>CPL_ERROR_TYPE_MISMATCH</code> is set. </p>
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<td class="memname">double cpl_parameter_get_double </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the value of the given double parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An double parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's double value. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current double value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">double cpl_parameter_get_enum_double </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>position</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Get the possible values for a double enumeration. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An enumeration parameter </td></tr>
<tr><td class="paramname">position</td><td>Position to look up in the list of possible values.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The double value at position <em>position</em> in the list of possible values of the enumeration <em>self</em>. In case of an error the function returns 0. and an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_ENUM</code>, or <em>self</em> is not of type <code>CPL_TYPE_DOUBLE</code>. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_ACCESS_OUT_OF_RANGE </td><td class="ecr">The requested index position <em>position</em> is out of range. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the double value at position <em>position</em> from the list of enumeration values the parameter <em>self</em> can possibly take. For any valid enumeration parameter this list contains at leas one value. The possible values are counted starting from 0. </p>
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<td class="memname">int cpl_parameter_get_enum_int </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>position</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Get the possible values for an integer enumeration. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An enumeration parameter </td></tr>
<tr><td class="paramname">position</td><td>Position to look up in the list of possible values.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The integer value at position <em>position</em> in the list of possible values of the enumeration <em>self</em>. In case of an error the function returns 0 and an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_ENUM</code>, or <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_ACCESS_OUT_OF_RANGE </td><td class="ecr">The requested index position <em>position</em> is out of range. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the integer value at position <em>position</em> from the list of enumeration values the parameter <em>self</em> can possibly take. For any valid enumeration parameter this list contains at least one value. The possible values are counted starting from 0. </p>
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<td class="memname">int cpl_parameter_get_enum_size </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the number of alternatives of an enumeration parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An enumeration parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of possible values the parameter <em>self</em> can take, or 0 if <em>self</em> does not point to a valid parameter, or the parameter is not an enumeration parameter. In case of an error the function also sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_ENUM</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the number of possible alternatives for an enumeration parameter, which is always greater or equal than 1. </p>
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<td class="memname">const char* cpl_parameter_get_enum_string </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>position</em> </td>
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<p>Get the possible values for a string enumeration. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An enumeration parameter </td></tr>
<tr><td class="paramname">position</td><td>Position to look up in the list of possible values.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The string value at position <em>position</em> in the list of possible values of the enumeration <em>self</em>. In case of an error the function returns <code>NULL</code> and an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_ENUM</code>, or <em>self</em> is not of type <code>CPL_TYPE_STRING</code>. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_ACCESS_OUT_OF_RANGE </td><td class="ecr">The requested index position <em>position</em> is out of range. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the read-only string value at position <em>position</em> from the list of enumeration values the parameter <em>self</em> can possibly take. For any valid enumeration parameter this list contains at least one value. The possible values are counted starting from 0. </p>
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<td class="memname">const char* cpl_parameter_get_help </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the description of a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter description, or <code>NULL</code> if no description has been set. The function returns <code>NULL</code> if an error occurs and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function returns the read-only short help of the parameter <em>self</em>. The parameter description <b>must</b> not be modified using the returned pointer. </p>
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<td class="memname">int cpl_parameter_get_id </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the numerical identifier of the given parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's numerical identifier. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function looks up the numerical identifier of the given parameter <em>self</em>. A numerical identifier may be assigned to a parameter using <b><a class="el" href="group__cpl__parameter.html#ga0fcabc63505884f4a7a573dd028649d5" title="Set the numerical identifier of the given parameter.">cpl_parameter_set_id()</a></b>.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#ga0fcabc63505884f4a7a573dd028649d5" title="Set the numerical identifier of the given parameter.">cpl_parameter_set_id()</a> </dd></dl>
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<td class="memname">int cpl_parameter_get_int </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the value of the given integer parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An integer parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's integer value. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current integer value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">const char* cpl_parameter_get_name </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the name of a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's unique name, or <code>NULL</code> if <em>self</em> is not a valid parameter but <code>NULL</code>. In the latter case an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function returns the read-only unique name of the parameter <em>self</em>. The parameter name <b>must</b> not be modified using the returned pointer. </p>
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<td class="memname">double cpl_parameter_get_range_max_double </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the maximum value of a double range parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A double range parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the maximum double value the range parameter <em>self</em> can take. In case of an error, the function returns 0. and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_RANGE</code>, or <em>self</em> is not of type <code>CPL_TYPE_DOUBLE</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the double value defined to be the upper limit of the double range parameter <em>self</em>. </p>
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<td class="memname">int cpl_parameter_get_range_max_int </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the maximum value of an integer range parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An integer range parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the maximum integer value the range parameter <em>self</em> can take. In case of an error, the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_RANGE</code>, or <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the integer value defined to be the upper limit of the integer range parameter <em>self</em>. </p>
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<td class="memname">double cpl_parameter_get_range_min_double </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the minimum value of a double range parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A double range parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the minimum double value the range parameter <em>self</em> can take. In case of an error, the function returns 0. and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_RANGE</code>, or <em>self</em> is not of type <code>CPL_TYPE_DOUBLE</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the double value defined to be the lower limit of the double range parameter <em>self</em>. </p>
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<td class="memname">int cpl_parameter_get_range_min_int </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the minimum value of an integer range parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>An integer range parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the minimum integer value the range parameter <em>self</em> can take. In case of an error, the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The class of the parameter <em>self</em> is not of the kind <code>CPL_PARAMETER_CLASS_RANGE</code>, or <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function retrieves the integer value defined to be the lower limit of the integer range parameter <em>self</em>. </p>
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<td class="memname">const char* cpl_parameter_get_string </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Get the value of the given string parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A string parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's string value. If an error occurs the function returns <code>NULL</code> and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_STRING</code>. </td></tr>
</table>
</dd>
</dl>
<p>The current string value of the parameter <em>self</em> is retrieved. </p>
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<td class="memname">const char* cpl_parameter_get_tag </td>
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<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the parameter's user tag. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's user tag, or <code>NULL</code> if no user tag was previously set. The function returns <code>NULL</code> if an error occurs and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The current read-only setting of the user definable tag of the given parameter <em>self</em> is retrieved. </p>
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<td class="memname"><a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> cpl_parameter_get_type </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em></td><td>)</td>
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<p>Get the parameter's value type. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the parameter's value type. The function returns <code>CPL_TYPE_INVALID</code> if <em>self</em> is not a valid parameter, but <code>NULL</code>. In this case an appropriate error is also set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The type identifier of the parameter's value is retrieved from the given parameter <em>self</em>. </p>
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<td class="memname">int cpl_parameter_is_enabled </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> </td>
<td class="paramname"><em>mode</em> </td>
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<p>Get the parameter's activity status for the environment context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">mode</td><td>The parameter mode.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns a non-zero value if the parameter is enabled for the environment context, or 0 if the parameter is not active. If an error occurs the function returns 0 and sets an appropriate error code.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_ILLEGAL_INPUT </td><td class="ecr">The parameter mode <em>mode</em> is not supported. </td></tr>
</table>
</dd>
</dl>
<p>The function returns whether the parameter is enabled for the environment context or not. If the parameter is enabled for the context the application may modify the parameter's value if the parameter is referenced in the context specific input of the application. If the parameter is disabled, the application must not modify the parameter's value. </p>
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<td class="memname"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a>* cpl_parameter_new_enum </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>name</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> </td>
<td class="paramname"><em>type</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>description</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>context</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"> </td>
<td class="paramname"><em>...</em> </td>
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<p>Create a new enumeration parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">name</td><td>The parameter's unique name </td></tr>
<tr><td class="paramname">type</td><td>The type of the parameter's current and default value. </td></tr>
<tr><td class="paramname">description</td><td>An optional comment or description of the parameter. </td></tr>
<tr><td class="paramname">context</td><td>The context to which the parameter belongs. </td></tr>
<tr><td class="paramname">...</td><td>Arguments used for parameter initialisation.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the newly created parameter, or <code>NULL</code> if the parameter could not be created. In the latter case an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_INVALID_TYPE </td><td class="ecr">An unsupported type was passed as <em>type</em>. </td></tr>
</table>
</dd>
</dl>
<p>The function allocates memory for an enumeration parameter with the name <em>name</em> and a value type <em>type</em>. Optionally a comment describing the parameter may be passed by <em>description</em> and the context to which the parameter belongs may be given by <em>context</em>.</p>
<p>To properly initialise the newly created enumeration, the parameter's default value (together with the number of alternatives following) and the list of enumeration alternatives must be passed as the variable argument list arguments. The list of enumeration alternatives must contain the default value! Apart from the number of possible alternatives, which must be an argument of type <code>int</code>, the type of all initialisation arguments must match the parameter's value type as it is indicated by <em>type</em>.</p>
<p>The following example creates a string enumeration parameter with the unique name <code>application.setup.enum</code> which belongs to the context <code>application.setup</code> with the default <em>def</em> and 3 enumeration alternatives.</p>
<dl class="section user"><dt>Example:</dt><dd><div class="fragment"><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *first = <span class="stringliteral">"first"</span>;</div>
<div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *second = <span class="stringliteral">"second"</span>;</div>
<div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *third = <span class="stringliteral">"third"</span>;</div>
<div class="line"></div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d" title="The opaque parameter data type.">cpl_parameter</a> *p = <a class="code" href="group__cpl__parameter.html#ga422fc68d4eb345c1a558ac6f6f104cf9" title="Create a new enumeration parameter.">cpl_parameter_new_enum</a>(<span class="stringliteral">"application.setup.enum"</span>,</div>
<div class="line"> <a class="code" href="group__cpl__type.html#gga3f03371e201544e9115b40065e47f086a8c58196493fdac6c0424560417cd6bf8">CPL_TYPE_STRING</a>,</div>
<div class="line"> <span class="stringliteral">"An enum of type string"</span>,</div>
<div class="line"> <span class="stringliteral">"application.setup"</span>,</div>
<div class="line"> first, 3, first, second,</div>
<div class="line"> third);</div>
</div><!-- fragment --></dd></dl>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#ga15e409fadfe1060e48d4b02ccbf27fb2" title="Create a new value parameter.">cpl_parameter_new_value()</a>, <a class="el" href="group__cpl__parameter.html#ga0e1bacfbcb11e913ad996539744a1d89" title="Create a new range parameter.">cpl_parameter_new_range()</a> </dd></dl>
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<td class="memname"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a>* cpl_parameter_new_range </td>
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<td class="paramtype">const char * </td>
<td class="paramname"><em>name</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> </td>
<td class="paramname"><em>type</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const char * </td>
<td class="paramname"><em>description</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>context</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname"><em>...</em> </td>
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<p>Create a new range parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">name</td><td>The parameter's unique name </td></tr>
<tr><td class="paramname">type</td><td>The type of the parameter's current and default value. </td></tr>
<tr><td class="paramname">description</td><td>An optional comment or description of the parameter. </td></tr>
<tr><td class="paramname">context</td><td>The context to which the parameter belongs. </td></tr>
<tr><td class="paramname">...</td><td>Arguments used for parameter initialisation.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the newly created parameter, or <code>NULL</code> if the parameter could not be created. In the latter case an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_INVALID_TYPE </td><td class="ecr">An unsupported type was passed as <em>type</em>. </td></tr>
</table>
</dd>
</dl>
<p>The function allocates memory for a range parameter with the name <em>name</em> and a value type <em>type</em>. Optionally a comment describing the parameter may be passed by <em>description</em> and the context to which the parameter belongs may be given by <em>context</em>.</p>
<p>To properly initialise the newly created range the parameters default value together with the minimum and maximum value of the range has to be passed as the variable argument list arguments. The type of all initialisation arguments must match the parameter's value type as it is indicated by <em>type</em>.</p>
<p>The following example creates a double range parameter with the unique name <code>application.setup.range</code> which belongs to the context <code>application.setup</code> with the default <em>def</em> and the range boundary values <em>minimum</em> and <em>maximum</em>.</p>
<dl class="section user"><dt>Example:</dt><dd><div class="fragment"><div class="line"><span class="keywordtype">double</span> def = 0.5;</div>
<div class="line"><span class="keywordtype">double</span> min = 0.0;</div>
<div class="line"><span class="keywordtype">double</span> max = 1.0;</div>
<div class="line"></div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d" title="The opaque parameter data type.">cpl_parameter</a> *p = <a class="code" href="group__cpl__parameter.html#ga0e1bacfbcb11e913ad996539744a1d89" title="Create a new range parameter.">cpl_parameter_new_range</a>(<span class="stringliteral">"application.setup.range"</span>,</div>
<div class="line"> <a class="code" href="group__cpl__type.html#gga3f03371e201544e9115b40065e47f086a4923f03f3a673edd344b0d81835ca69e">CPL_TYPE_DOUBLE</a>,</div>
<div class="line"> <span class="stringliteral">"A range of type double"</span>,</div>
<div class="line"> <span class="stringliteral">"application.setup"</span>,</div>
<div class="line"> def, min, max);</div>
</div><!-- fragment --></dd></dl>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#ga15e409fadfe1060e48d4b02ccbf27fb2" title="Create a new value parameter.">cpl_parameter_new_value()</a>, <a class="el" href="group__cpl__parameter.html#ga422fc68d4eb345c1a558ac6f6f104cf9" title="Create a new enumeration parameter.">cpl_parameter_new_enum()</a> </dd></dl>
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<td class="memname"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a>* cpl_parameter_new_value </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__cpl__type.html#ga01345c598396c7cd159979734adfb57d">cpl_type</a> </td>
<td class="paramname"><em>type</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>description</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>context</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"> </td>
<td class="paramname"><em>...</em> </td>
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<p>Create a new value parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">name</td><td>The parameter's unique name </td></tr>
<tr><td class="paramname">type</td><td>The type of the parameter's current and default value. </td></tr>
<tr><td class="paramname">description</td><td>An optional comment or description of the parameter. </td></tr>
<tr><td class="paramname">context</td><td>The context to which the parameter belongs. </td></tr>
<tr><td class="paramname">...</td><td>Arguments used for parameter initialisation.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns the newly created parameter, or <code>NULL</code> if the parameter could not be created. In the latter case an appropriate error code is set.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>name</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_INVALID_TYPE </td><td class="ecr">An unsupported type was passed as <em>type</em>. </td></tr>
</table>
</dd>
</dl>
<p>The function allocates memory for a value parameter with the name <em>name</em> and a value type <em>type</em>. Optionally a comment describing the parameter may be passed by <em>description</em> and the context to which the parameter belongs may be given by <em>context</em>.</p>
<p>The newly created parameter is initialised with the default value passed to the function as the only variable argument list argument. The type of the value must match the parameter's value type as it is indicated by <em>type</em>.</p>
<p>The following example creates an integer value parameter with the unique name <code>application.setup.value</code> which belongs to the context <code>application.setup</code> with the default value <em>def</em> </p>
<dl class="section user"><dt>Example:</dt><dd><div class="fragment"><div class="line"><span class="keywordtype">int</span> def = 1;</div>
<div class="line"></div>
<div class="line"><a class="code" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d" title="The opaque parameter data type.">cpl_parameter</a> *p = <a class="code" href="group__cpl__parameter.html#ga15e409fadfe1060e48d4b02ccbf27fb2" title="Create a new value parameter.">cpl_parameter_new_value</a>(<span class="stringliteral">"application.setup.value"</span>,</div>
<div class="line"> <a class="code" href="group__cpl__type.html#gga3f03371e201544e9115b40065e47f086ae333db5ccea0813ccd892525b4ba1345">CPL_TYPE_INT</a>,</div>
<div class="line"> <span class="stringliteral">"An integer value"</span>,</div>
<div class="line"> <span class="stringliteral">"application.setup"</span>,</div>
<div class="line"> def);</div>
</div><!-- fragment --></dd></dl>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#ga0e1bacfbcb11e913ad996539744a1d89" title="Create a new range parameter.">cpl_parameter_new_range()</a>, <a class="el" href="group__cpl__parameter.html#ga422fc68d4eb345c1a558ac6f6f104cf9" title="Create a new enumeration parameter.">cpl_parameter_new_enum()</a> </dd></dl>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_alias </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325">cpl_parameter_mode</a> </td>
<td class="paramname"><em>mode</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const char * </td>
<td class="paramname"><em>alias</em> </td>
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<p>Set alias names for the given parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter </td></tr>
<tr><td class="paramname">mode</td><td>The parameter mode for which the alias should be set. </td></tr>
<tr><td class="paramname">alias</td><td>The parameter's alias.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_ILLEGAL_INPUT </td><td class="ecr">The parameter mode <em>mode</em> is not supported. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns an alternative name to the parameter <em>self</em> for the given mode <em>mode</em>. This alias name may be used instead of the fully qualified parameter name in the context for which they have been set. If the alias name is <code>NULL</code> a previously set alias is deleted.</p>
<p>The context for which an alias is set is selected by the <em>mode</em>. The functions accepts the parameter modes <code>CPL_PARAMETER_MODE_CFG</code>, <code>CPL_PARAMETER_MODE_CLI</code> and <code>CPL_PARAMETER_MODE_ENV</code>.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#gab617c85978317cf916b89af327874325" title="The parameter mode data type.">cpl_parameter_mode</a> </dd></dl>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_bool </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramname"><em>value</em> </td>
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<p>Assign a boolean value to a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter the value is assigned to. </td></tr>
<tr><td class="paramname">value</td><td>The boolean value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_BOOL</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns a boolean value <em>value</em> to a parameter of type <code>CPL_TYPE_BOOL</code>. Any non-zero value passed as <em>value</em> is interpreted as <em>true</em>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_default_bool </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>value</em> </td>
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<p>Modify the default value of a boolean parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter whose default value is modified. </td></tr>
<tr><td class="paramname">value</td><td>The boolean value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_BOOL</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function changes the default value of the parameter <em>self</em> to the boolean value <em>value</em>. The parameter <em>self</em> must be of type <code>CPL_TYPE_BOOL</code>. Any non-zero value passed as <em>value</em> is interpreted as <em>true</em>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_default_double </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>value</em> </td>
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<p>Modify the default value of a double parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter whose default value is modified. </td></tr>
<tr><td class="paramname">value</td><td>The double value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_DOUBLE</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function changes the default value of the parameter <em>self</em> to the double value <em>value</em>. The parameter <em>self</em> must be of type <code>CPL_TYPE_DOUBLE</code>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_default_flag </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
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<td class="paramkey"></td>
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<td class="paramtype">int </td>
<td class="paramname"><em>status</em> </td>
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<p>Change the presence status flag of the given parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">status</td><td>The presence status value to assign.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function sets the presence status flag of the given parameter <em>self</em> to the value <em>status</em>. Any non-zero value means that the parameter is present. If the presence status should be changed to `not present' the argument <em>status</em> must be 0.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#gabbb3c1294a6db917af70e7642b827592" title="Get the presence status flag of the given parameter.">cpl_parameter_get_default_flag()</a> </dd></dl>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_default_int </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
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<p>Modify the default value of an integer parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter whose default value is modified. </td></tr>
<tr><td class="paramname">value</td><td>The integer value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function changes the default value of the parameter <em>self</em> to the integer value <em>value</em>. The parameter <em>self</em> must be of type <code>CPL_TYPE_INT</code>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_default_string </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramtype">const char * </td>
<td class="paramname"><em>value</em> </td>
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<p>Modify the default value of a string parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter whose default value is modified. </td></tr>
<tr><td class="paramname">value</td><td>The string value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
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<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_STRING</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function changes the default value of the parameter <em>self</em> to the string value <em>value</em>. The parameter <em>self</em> must be of type <code>CPL_TYPE_STRING</code>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_double </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>value</em> </td>
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<p>Assign a double value to a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter the value is assigned to. </td></tr>
<tr><td class="paramname">value</td><td>The double value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_DOUBLE</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns a double value <em>value</em> to a parameter of type <code>CPL_TYPE_DOUBLE</code>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_id </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>id</em> </td>
</tr>
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<p>Set the numerical identifier of the given parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">id</td><td>Numerical identifier to assign.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns a numerical identifier to the parameter <em>self</em>. The numerical value to be assigned to the parameter's numerical identifier member is passed as the argument <em>id</em>. The function does not do any checks on the numerical value of <em>id</em>. The numerical identifier may be used by an application to, for instance, assign a sequence number to the parameter.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#gaf7415af30d9a951d6475fb811e9f7b18" title="Get the numerical identifier of the given parameter.">cpl_parameter_get_id()</a> </dd></dl>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_int </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>value</em> </td>
</tr>
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<td></td>
<td>)</td>
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<p>Assign an integer value to a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter the value is assigned to. </td></tr>
<tr><td class="paramname">value</td><td>The integer value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_INT</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns an integer value <em>value</em> to a parameter of type <code>CPL_TYPE_INT</code>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_string </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>value</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Assign a string value to a parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>The parameter the value is assigned to. </td></tr>
<tr><td class="paramname">value</td><td>The string value to be assigned.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
<tr>
<td class="ecl">CPL_ERROR_TYPE_MISMATCH </td><td class="ecr">The type of the parameter <em>self</em> is not of type <code>CPL_TYPE_STRING</code>. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns a string value <em>value</em> to a parameter of type <code>CPL_TYPE_STRING</code>. </p>
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<td class="memname"><a class="el" href="group__cpl__error.html#ga44b4287e8a7a22122b94c220a1dd9459">cpl_error_code</a> cpl_parameter_set_tag </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__cpl__parameter.html#ga21c9a26800535c3ca9a55c7f5e96ab7d">cpl_parameter</a> * </td>
<td class="paramname"><em>self</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>tag</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Set the tag of the given parameter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>A parameter. </td></tr>
<tr><td class="paramname">tag</td><td>Tag string to assign.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function returns <code>CPL_ERROR_NONE</code> on success or a CPL error code otherwise.</dd></dl>
<dl class="exception">
<dt><b>Errors</b></dt>
<dd></dd>
<dt></dt>
<dd><table class="ec" align="center">
<tr>
<td class="ecl">CPL_ERROR_NULL_INPUT </td><td class="ecr">The parameter <em>self</em> is a <code>NULL</code> pointer. </td></tr>
</table>
</dd>
</dl>
<p>The function assigns a user definable tag <em>tag</em> to the parameter <em>self</em>. The function does not check the passed string <em>tag</em> in any way. The tag may be used by an application but it cannot rely on the contents of the parameter's tag.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__cpl__parameter.html#gab750e42319c06a6615fcf89239c35776" title="Get the parameter's user tag.">cpl_parameter_get_tag()</a> </dd></dl>
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