Using Intel® Visual Fortran to Create and Build Windows*-Based Applications
Using Windows API Routines with QuickWin
You can convert the unit numbers of QuickWin windows to Windows handles with the
QuickWin function. You should not use Windows GDI to draw on QuickWin windows because QuickWin keeps a window buffer and the altered window would be destroyed on redraw. You can use Windows OS subclassing to intercept graphics messages bound for QuickWin before QuickWin receives them.