Can I use use DirectDraw to change the screen resolution or desktop pixel depth?
You can create a window and use DirectDraw to change the display resolution and/or pixel depth. Then, get the window’s DC and create an OpenGL context from it. This is known to work on some devices. While we’re on the subject, Microsoft doesn’t require, and consequently does not test for, the ability to render OpenGL into a DirectDraw surface. Just because you can get a surface’s DC does not mean that OpenGL rendering is supported. Always check for error returns when creating contexts or maiing them current. 5.090 My card supports OpenGL, but I don’t get acceleration regardless of which pixel format I use.
