gdk_window_shape_combine_region() not functioning


I have a use case where I use gdk_window_shape_combine_region() to draw a circle over a button. The button is inside a custom container (type GtkContainer), so the GdkWindow in question is the window belonging to the container parent of the button.

This worked fine until GTK3.10: I bisected and found the commit after which it stopped working:

That patch is a bit beyond the scope of my knowledge, but I tried some fixes. Calling gdk_window_ensure_native() before gdk_window_shape_combine_region() seems to fix the issue, but then there are some issues with the "clicked" events for the button not working. Also on Wayland this approach seems to make the whole button transparent.

Is there a better approach I could take?


Eric Williams
Associate Software Engineer - Eclipse Team
Red Hat

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