Add a method to set the WM_CLASS hint on an X11 window on Linux

[p-himik]

Description

This is a feature request identical to LWJGL/lwjgl#51

In case it could affect the impl, my particular use-case is to be able to tell Awesome WM that the window should be floating based on its class.

GLFW has a somewhat similar request: glfw/glfw#2437

[TheMrMilchmann]

Unlike LWJGL 2, LWJGL 3 does not implement its windowing and only provides bindings to whatever the native libraries provide. I'm afraid you'll have to wait until this issue is resolved upstream in GLFW.

[Spasi]

Hey @p-himik,

If migrating to SDL is an option for you (available in 3.4.0 snapshots), it looks like it already supports this via SDL_HINT_X11_WINDOW_TYPE.

If not and you're on a JDK version that supports the FFM API, you could try calling XChangeProperty manually with the appropriate values.

[p-himik]

Thanks! It's mostly just a convenience feature, not something that's required at the moment, so I'm sticking to setting the window name to something I can check in my window manager and process accordingly. But I'm glad there are existing options to set the window type.