Drawing ontop of a game

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Hello everyone,
I wondered wether there was a way to draw, something like a little information window, ontop of a game, which is running in fullscreen mode.
At first i thought this would be impossible, but fraps - a recording program - does draw the games fps. even in fullscreen mode.
Is there a way of archieving this ( in C# ) ?

Posted 8-May-13 5:53am

User 9975801

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Sergey Alexandrovich Kryukov 8-May-13 12:49pm

It highly depends on the game. The problem is that the game can use DirectX, which does not live well with GDI+, which cannot really draw on top of the DirectX graphics. The solution should use DirectX, too, in particular, DirectX overlays.
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-05-08T06:53:00

Solution 1

Please see my comment to the question. If this is a DirectX-based game (the difficulty you have is indicative), solving the problem is pretty difficult. See, for example, these works:
http://www.skymaster1980.net16.net/index.php/direct3d/advanced-code-snippets/253-external-directx-overlay-non-hooked-c-[^],
http://www.unknowncheats.me/forum/c/62019-c-non-hooked-external-directx-overlay.html[^],
http://www.gamedev.net/topic/359794-c-direct3d-hooking-sample/[^].

—SA

Posted 8-May-13 6:53am

Sergey Alexandrovich Kryukov

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[no name] 8-May-13 13:07pm

this looks very promising, thank you
I'm gonna try it right now ;)

Sergey Alexandrovich Kryukov 8-May-13 15:24pm

I would appreciate if you dig into it and provide some feedback in case of success or problems...
—SA