I''ve written some code based on NeHe''s tutorial (2nd one) and I''ve got everything working. My program displays a square in the center of the window. My problem is, when I resize the window, the square disappears when I start resizing and doesn''t appear again until I let go of the mouse button. In NeHe''s tutorial, when you resize the polygons don''t disappear. Could someone point me to where in his code it is keeping his polygons from disappearing when you resize the window? Thanks.