Numpad and mouse 4/5 not bindable on linux

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1

It’s not possible to bind numpad’s key or mouse buttons 4/5 (back and forward) in linux.

This happens both with the editor and the unreal tournament standalone binary.

2

Hey Overload-

The numpad keys did not work for me as you reported but I was able to use the left and right mouse buttons. I have submitted UE-20558 to investigate this further.

Cheers

3

Could you check if https://github.com/EpicGames/UnrealEngine/commit/3efb838f79c2b8ab4badd9e664c777a1c3efed78 fixes that? Unfortunately that commit is not in official 4.9 release, but you can try it either in the main (master) branch or my fork of 4.9: https://github.com/RCL/UnrealEngine/

4

Yes, left and right button works of course, I was referring to the back/forward buttons (tho ones on the thumb)

With 4.9 i can now use they numpad keys but still not the thumb mouse buttons.

5

I tested the fork, numpad now works, mouse thumb buttons apparently still don’t.

6

What keycodes do those get reported as by SDL?

7

LinuxApplication.cpp is currently wrongly assuming that those buttons are SDL_BUTTON_X1 and SDL_BUTTON_X2, while (at least on my system) they are 8 and 9 (there is no #define for them, they are just ints)

8

So sounds like X11 mouse button numbering incorrect · Issue #1421 · libsdl-org/SDL · GitHub ?

Try X11: Fixed high mouse buttons mappings and horizontal wheels (thanks,… · libsdl-org/SDL@e58a5c4 · GitHub - I believe we don’t have that in our version.

9

Yes, adding that patch fix this.