gtk3x: Replace GdkEventButton use with GtkGesture
GdkEventButton has been dropped from gtk-3.98. Replace our use of it in gtk3x-client with GtkGesture.
This is not compatible with gtk-3.96 - must be pushed at the same time as we switch to 3.98.
Reply To cazfi
This is orchestrated in meta-ticket #43052
GdkEventButton has been dropped from gtk-3.98. Replace our use of it in gtk3x-client with GtkGesture.
This is not compatible with gtk-3.96 - must be pushed at the same time as we switch to 3.98.