Returns whether surfaces on this display are created with an
alpha channel.
Even if a true is returned, it is possible that the
surface’s alpha channel won’t be honored when displaying the
surface on the screen: in particular, for X an appropriate
windowing manager and compositing manager must be running to
provide appropriate display. Use gdk.display.Display.isComposited
to check if that is the case.
Returns whether surfaces on this display are created with an alpha channel.
Even if a true is returned, it is possible that the surface’s alpha channel won’t be honored when displaying the surface on the screen: in particular, for X an appropriate windowing manager and compositing manager must be running to provide appropriate display. Use gdk.display.Display.isComposited to check if that is the case.
On modern displays, this value is always true.