DEVMODE lpDevMode;    lpDevMode.dmBitsPerPel = 32;    lpDevMode.dmPelsWidth = 1024;    lpDevMode.dmPelsHeight = 768;    lpDevMode.dmSize = sizeof(lpDevMode);    lpDevMode.dmFields = DM_PELSWIDTH | DM_BITSPERPEL | DM_PELSHEIGHT;    LONG res;    res = ChangeDisplaySettings(&lpDevMode, 0);