Here some code that you can compile and run to admire that for yourself:ĭrawTextExW(hdc, (wchar_t*)text.c_str(), text.size(), &textPos, DT_CENTER | DT_NOCLIP | DT_NOPREFIX, NULL) I thought that if I found a window that was already taking the fullscreen, visible, layered and transparent I could just render on it.īut then an idea came to my mind, is there no other windows that are always on top and take all the screen?įirst solution: Drawing directly on the desktop window I was using Process Hacker checking out the windows in my system (View > Windows) looking for windows that I could hijack. If you feel like a small challenge here is how I found it, perhaps can you find it too without reading the solution? 😉 The solution is actually so simple that I felt like facepalming myself when I found it.
#Hijack nvidia overlay full
I have personally developed an Overwolf plugin that allowed me to display on top of my game’s frames, but I never finished my system, I wasn’t satisfied with it, but other people have implemented full systems, such as the plugin “Ultimate crosshair” that you can see in action here:Īnyway, I recently found a solution that lets you draw your overlay without a window entirely (technically we are still using a window, but we don’t create it and it’s not linked in any way to the program). Many possibilities were considered, including leveraging “whitelisted” programs, who are authorised to draw on top of game’s frames such as FRAPS, Overwolf, Discord, NVIDIA, and many other gaming related software. Traditional overlay windows have very specific and detectable characteristics in general, like being at least as big as the game’s client area, being WS_EX_TRANSPARENT and WS_EX_LAYERED, and sometimes WS_EX_TOPMOST, even if you can remove this one by sending back your window at the top at each cycle. Since many people – including me – suspect windows of external overlays to be detected by anti-cheats, having an overlay system without a window entirely has excited many people in the game hacking community.
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