Sets a specific window to receive events about, so @gesture will effectively handle only events targeting @window, or a child of it. @window must pertain to gtk_event_controller_get_widget().
a #GdkWindow, or %NULL
3.14
See Implementation
Sets a specific window to receive events about, so @gesture will effectively handle only events targeting @window, or a child of it. @window must pertain to gtk_event_controller_get_widget().