Using Win32 with QuickWin

You can convert the unit numbers of QuickWin windows to Win32 handles with the GETHWNDQQ 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 subclassing to intercept graphics messages bound for QuickWin before QuickWin receives them.

See the sample program POKER in the Visual Fortran Samples ...\DF98\SAMPLES\QUICKWIN\POKER folder for a demonstration of this technique.