This may be the first DWM overlay project on GitHub that gets a pointer to the IDXGISwapChainDWMLegacy virtual function table without a memory scan, using undocumented GUIDs. By default, this project only works on Windows 10/11. To support older OS versions, you need to update the offsets for the virtual function table.

Sorry for the shitty code, I'll do better later.

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• Debug version causes system to freeze.
• Duplicating an overlay in an area that is not updating.
• The overlay disappears after reconnecting the monitor.
• Doesn't work on Win11 24H2+ with NVIDIA graphics cards.

• Clone or download this repository.
• Open the dwm-overlay solution file in Visual Studio IDE.
• Select the target platform.
• Press ctrl + shift + b to compile.

• Open any DLL-injector as administrator.
• Find the dwm.exe process.
• Inject the dwm-overlay.dll into process.

Before use, we strongly recommend that you read the license.