I'm having a problem with an app made in C++ that uses OpenGL. This is a simple app that loads an image, and can apply a few simple brushes (think photoshop) onto an originally black canvas. When I release the mouse button the brush changes should stay on the black canvas (at least this is what happens on WinXP) but they do not stick on Vista. My question is - is this a problem with Vista? I heard some stuff about OpenGL and Vista not being 100% compatible. Is there a way to fix this? Any info can help, ty!