I am using the "GensPlus 0.0.3.39" emulator for playing the Sega CD and the 32X games.
Question :
Is there a way to active the mouse to play games like "Mad Dog McCree and some others ?
A gamepad is supported , it is no prob to configure the keys.
But controling some of these FMV games with the k-board or the gamepad is too slowly.

On the emu site is just a little faq section (nothing for controlers) and the other info site I found is just in France.

I think the only genesis emulator that has any support for the lightgun and menacer and the Sega Mouse is Fusion, you might give it a try and see how well those games play in that emulator. I checked on my copy of Gens and Gens+ and didn't see and options for them.

I found the "Kega Fusion" emulator. Ok , I will try out.
Thank you Z-Neo