+ EnumDisplaySettings( NULL, -1, &devMode );
+ devMode.dmFields |= DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL | DM_DISPLAYFREQUENCY;
+
+ devMode.dmPelsWidth = fgState.GameModeSize.X;
+ devMode.dmPelsHeight = fgState.GameModeSize.Y;
+ devMode.dmBitsPerPel = fgState.GameModeDepth;
+ devMode.dmDisplayFrequency = fgState.GameModeRefresh;
+ devMode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL | DM_DISPLAYFREQUENCY;
+
+ switch ( ChangeDisplaySettingsEx(NULL, &devMode, NULL, haveToTest ? CDS_TEST : CDS_FULLSCREEN , NULL) )
+ {
+ case DISP_CHANGE_SUCCESSFUL:
+ success = GL_TRUE;
+
+ /* update vars in case if windows switched to proper mode */
+ EnumDisplaySettings( NULL, FREEGLUT_ENUM_CURRENT_SETTINGS, &devMode );
+ fgState.GameModeSize.X = devMode.dmPelsWidth;
+ fgState.GameModeSize.Y = devMode.dmPelsHeight;
+ fgState.GameModeDepth = devMode.dmBitsPerPel;
+ fgState.GameModeRefresh = devMode.dmDisplayFrequency;
+ break;
+ case DISP_CHANGE_RESTART:
+ fggmstr = "The computer must be restarted for the graphics mode to work.";
+ break;
+ case DISP_CHANGE_BADFLAGS:
+ fggmstr = "An invalid set of flags was passed in.";
+ break;
+ case DISP_CHANGE_BADPARAM:
+ fggmstr = "An invalid parameter was passed in. This can include an invalid flag or combination of flags.";
+ break;
+ case DISP_CHANGE_FAILED:
+ fggmstr = "The display driver failed the specified graphics mode.";
+ break;
+ case DISP_CHANGE_BADMODE:
+ fggmstr = "The graphics mode is not supported.";
+ break;
+ default:
+ fggmstr = "Unknown error in graphics mode???"; /* dunno if it is possible,MSDN does not mention any other error */
+ break;
+ }