case GLUT_SCREEN_HEIGHT: return fgDisplay.ScreenHeight ;
case GLUT_SCREEN_WIDTH_MM: return fgDisplay.ScreenWidthMM ;
case GLUT_SCREEN_HEIGHT_MM: return fgDisplay.ScreenHeightMM;
- case GLUT_INIT_WINDOW_X: return fgState.Position.X ;
- case GLUT_INIT_WINDOW_Y: return fgState.Position.Y ;
- case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.X ;
- case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Y ;
+ case GLUT_INIT_WINDOW_X: return fgState.Position.Use ?
+ fgState.Position.X : -1 ;
+ case GLUT_INIT_WINDOW_Y: return fgState.Position.Use ?
+ fgState.Position.Y : -1 ;
+ case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.Use ?
+ fgState.Size.X : -1 ;
+ case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Use ?
+ fgState.Size.Y : -1 ;
case GLUT_INIT_DISPLAY_MODE: return fgState.DisplayMode ;
#if TARGET_HOST_POSIX_X11