/usr/share/doc/nvidia-settings/examples/samples/nv-control-screen.h is in nvidia-settings 304.88-0ubuntu0.0.2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | /*
* Copyright (c) 2010 NVIDIA Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* nv-control-screen.h - trivial helper for NV-CONTROL sample clients: use
* the default screen if it is an NVIDIA X screen. If it isn't, then look
* for the first NVIDIA X screen. Abort if no NVIDIA X screens are found.
*/
#ifndef __NV_CONTROL_SCREEN_H__
#define __NV_CONTROL_SCREEN_H__
#include <stdlib.h>
#include <stdio.h>
#include <X11/Xlib.h>
#include "NVCtrlLib.h"
static inline int GetNvXScreen(Display *dpy)
{
int defaultScreen, screen;
defaultScreen = DefaultScreen(dpy);
if (XNVCTRLIsNvScreen(dpy, defaultScreen)) {
return defaultScreen;
}
for (screen = 0; screen < ScreenCount(dpy); screen++) {
if (XNVCTRLIsNvScreen(dpy, screen)) {
printf("Default X screen %d is not an NVIDIA X screen. "
"Using X screen %d instead.\n",
defaultScreen, screen);
return screen;
}
}
fprintf(stderr, "Unable to find any NVIDIA X screens; aborting.\n");
exit(1);
}
#endif /* __NV_CONTROL_SCREEN_H__ */
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