Button Mnemonics (hotkeys)

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Hello fellow community,

I'm working on making app more accessible for people using narrator to navigate. For that I have groupped, added correct tab orders and added "narrator descriptions" (accessible names) for all core controls under main window, extra setting window, etc.

I also wanted to make app a bit more accessible from keyboard, and add hotkeys to some basic buttons in a main window. C# and Winforms have a native way to do that called Mnemonics, but by some reason they don't seem to work in the project. Does anybody know what could be the cause?

Thanks.

GHelper.zip