Cheat Engine

[sangeli]

I am making a little eve online program that helps you out by displaying info on top of the game screen. It has gone well so far, except I have run into a few problems, one being that I want to draw shapes/text on the game screen via overlay without impeding mouse clicks. I have a transparent form exactly on top of the game window and it has no frame, but when I set opacity > 0 I can't click on the game.

How can I either draw onto the game's actual window or draw onto the form but not impede the mouse.

edit: another problem but a near solution was to make the background color the transparency key, but if I draw in a different color it still blocks the mouse (and keyboard)

[atom0s]

You can try making the window 'click-through' while it's set to always on top as well so it will sit above the game but not interfere. Here's a small example of how to do that:
http://zeeohemgee.blogspot.com/2006/06/c-snippets-create-transparent-click.html

As for drawing onto the game there will be a bit more work then simply coding a small application to do that. You will need to find out what rendering method the game uses, hook it, and so on to draw your own things.