Hello Jan,

I frequently use PSPad on my notebook when I'm traveling. I noticed that
2-finger touchpad gestures for horizontal scrolling don't work in the editor
window (while working flawlessly for vertical scrolling).

A quick internet search indicates that Delphi doesn't handle the WM_MOUSEHWHEEL
message (not to be confused with WM_MOUSEWHEEL).
Not sure if these sources are helpful since I'm not familiar with Delphi.
https://stackoverflow.com/questions/38498099/how-do-you-access-trackpad-gestures
-in-delphi-berlin
https://en.delphipraxis.net/topic/8573-touchpad-two-fingers-pan-in-a-vcl-app/

BR
Steffen

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