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Graphics Programming Black Book (Special Edition)
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chapterj
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lj-3.c
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1997-06-18
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813b
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31 lines
// functions to manipulate the desktop video mode
#include <windows.h>
// attempts to set the desktop video mode to the specified
// resolution and bits per pixel
int SetVideoMode (int bpp, int width, int height)
{
DEVMODE gdevmode;
gdevmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
gdevmode.dmBitsPerPel = bpp;
gdevmode.dmPelsWidth = width;
gdevmode.dmPelsHeight = height;
// CDS_FULLSCREEN keeps icons and windows from being moved to
// fit within the new dimensions of the desktop
if (ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN) !=
DISP_CHANGE_SUCCESSFUL)
{
return 0;
}
return 1;
}
// puts back the default desktop video mode
void RestoreDefaultVideoMode (void)
{
ChangeDisplaySettings (NULL, 0);
}