Possible Error/Mistake in LinuxWindow

[HiImJulien]

The event handler is trying to catch 'DestroyNotify'. Without having the code tested on an actual linux machine, there's probably a mistake.

• The event mask must specify "SubstructureNotifyMask".
• By specification, this event is only triggered, when the window is being destroyed by either "XDestroyWindow" or "XDestroySubwindows".

I am not sure whether this last point should belong to the former one:

• Closing the window, by pressing the "X"-Button in the decoration is not being handled. The X11 protocol does not define such an event explicitely, but by using Extensions.

See here

[LukasBanana]

I know my answer is very late, but I am currently not actively working on this project. If you have any ideas to solve this issue, feel free to submit a pull request. Greetings, Lukas

[LukasBanana]

I finally solved this issue by adding event handling for XClientMessageEvent (see thread on stackoverflow).

Fixed with 8f50a88.