i am making a opengl program and was wondering how would i make it full screen. When i put this code in the compiler says its wrong:

Code:
DEVMODE devModeScreen;
memset(&devModeScreen,0,sizeof(devModeScreen));
devModeScreen.dmSize = sizeof(devModeScreen);
devModeScreen.dmPelsWidth = screenWidth;
devModeScreen.dmpelsHeight = screenHeight;
devModeScreen.dmBitsPerPel = screenBpp;
devModeScreen.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL;

if (ChangeDisplaySettings(&devModeScreen, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
fullscreen = false;