GdkWindows.
This function provides a convenient way of doing this. A container,
when it receives an expose event, calls gtkContainerPropagateExpose
once for each child, passing in the event the container received.gtkContainerPropagateExpose(object, child, event)objectchildcontainereventgtkContainerPropagateExpose takes care of deciding whether
an expose event needs to be sent to the child, intersecting
the event's area with the child area, and sending the event.
In most cases, a container can simply either simply inherit the
"expose" implementation from GtkContainer, or, do some drawing
and then chain to the ::expose implementation from GtkContainer.