It's a problem with Joy To Key. I tried mapping buttons to other things that are not in a game, such as mouse functions on Windows, and it still didn't work. There has to be something I didn't configure correctly in the program.
And about the confusion of pressing any button in o2mania, I can press any button WITHIN sdf[space]jkl so I press S and the left column lights up. I can't just press any button on the keyboard.
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