So I wrote a piano program in Lazarus.? It uses keyboard keys to play notes.? Specifically, it uses the Q row for white keys, out to the \ key (because that's the last one on my keyboard), and the number row for black keys, out to the backspace.? FormKeyDown and FormKeyUp are used to trap the keystrokes.? KeyPreview := TRUE.

Problem is, some keystrokes are getting trapped earlier, their 7th bit set.? [ comes through as #219, ] comes through as #221. Worse, = comes through as #187.

Now, I've corrected for all this in my code, but the question is:? What's causing this?

Running Lazarus 3.4 with fpc 3.2.2 on Debian 12.6, openbox and xfpanel, but not xfwm.