
Armin K produced the latest patch to get GTK+ supporting window minimization with GDK's Wayland back-end. With the current state of affairs, the patch adding window minimize support for GTK+ apps on Wayland amounted to just a few lines of new code.
The Wayland minimize support is using the XDG surface API for handling the minimization work. The bug discussing GTK+ Wayland minimize support is Bug 695945 and was open since early 2015.
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