Returns the baseline that has currently been allocated to widget.
This function is intended to be used when implementing handlers
for the gtk.widget.WidgetClass.snapshot() function, and when allocating
child widgets in gtk.widget.WidgetClass.size_allocate().
Returns the baseline that has currently been allocated to widget.
This function is intended to be used when implementing handlers for the gtk.widget.WidgetClass.snapshot() function, and when allocating child widgets in gtk.widget.WidgetClass.size_allocate().