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Asked: 2026-05-28T22:53:46+00:00

Initially, I want to use 2 mice for an application with separate pointers and

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Initially, I want to use 2 mice for an application with separate pointers and interaction between the 2 mice(e.g. selecting a rectangular area). Later I might want to have a second pointer available generally in windows. I thought this might be possible by simulating a stylus pen with the second mouse.

My main question though is: Am I right to use a system hook as opposed to RawInput, DirectInput or InputX?

If using a system hook I presume I need to use WH_MOUSE_LL rather than WH_MOUSE even if the application is running on one thread? My preferred language is C#, but again I presume that using DLL imports means I can do anything that’s possible in C++ or C.

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  1. Editorial Team

    Using system hook is the way to go in WINDOWS. You can use C# with InteropServices and the apropriate COM+ objects, altough creating a C++ class and wrapping it would be a better approach. I’ve done it myself with keyboard events. I could LOG all keyboards typing… And yes, you have to use WH_MOUSE_LL.

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