Cheat Engine

False Prophet

I'm wanting to draw a simple shape inside of an OpenGL game(Quake 3 engine) using SetWindowsHookEx, is this even possible? If so how do I accomplish it?

AhMunRa · Posted: Tue Jan 04, 2011 11:45 am Post subject:

Sounds like you are looking to make bounding box or the like. http://www.morrowland.com/apron/tut_gl.php

False Prophet · Posted: Tue Jan 04, 2011 2:01 pm Post subject:

I was going with something much more simple such as a 2D solid color rectangle. Embarassed

Oh and I'm not trying to write an openGL game, I want to draw a rectangle ontop of for example, Quake 3 using some sort of hook if its possible.

AhMunRa · Posted: Tue Jan 04, 2011 4:18 pm Post subject:

Quake uses OpenGL and it is possible to do what you want, but you will need to hook into the OpenGL lib. Or create your own overlay, of which if your game is using OpenGL you will need to snag draw coords from OpenGL calls. I'd suggest using OpenGL to do the actual drawing, not sure if you could use DirectX on top of OpenGL.

Check out that link I posted for you. Should be alot of what you need.

hcavolsdsadgadsg · Posted: Tue Jan 04, 2011 5:43 pm Post subject:

Quake3 uses vertex arrays for its drawing afaik, you are probably looking for one of the glDrawElements() family functions or glDrawArrays().

Vertex buffers weren't around then and immediate mode was suicide so I'm guessing it's one of those that you want to hook.