如何在全屏模式下显示消息？

Question

Well.. I want to do a thing, but I don't know how searching informations to do that.

How can I send a message over the game's screen? For example: Just writing "Hello World" on a game running in fullscreen.

I know C and C#, I'd like some tips how to do that. What a need to study etc.

Thanks, I wait a response :)

Answer 1

The thing you want is to hook the DirectX context of the game and put your graphics inside. It's the same way as Steam does for its overlay. You can find the example here: Screen capture and Overlays for Direct3D 9, 10 and 11