hi.. in most opengl tutorials i allways notice the use of the PeekMessage function, and also notice that the Drawing Procedure is in the main loop... but.. is there a real/serious problem if we put the Drawing Procedure in the WM_PAINT message ? (me, i dont see any probem) what is the comparison, in terms of performance, simplicity ? ok. ciao to all :-P

The WM_PAINT message doesn''t get sent very often. Either something has to cause the window to need to be redrawn, or somwhere in your code you force the WM_PAINT message to be sent. Forcing the WM_PAINT message to be sent may cause windows to do some of it''s own drawing as well (I''m not sure on this though). I would think that all drawing is best done in the main loop rather than by using the WM_PAINT message.

j.w.

What about using InvalidateRect( ) to redraw just the viewport rectangle?

Just use main loop, windows paint messages get you a considerably lower framerate. I won''t explain it all, go find yourself an article. I''ve read it in at least three books.

Alex Broadwin
A-Tronic Software & Design
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