A value of -1 stored in width or height indicates that that
dimension has not been set explicitly and the natural requisition
of the widget will be used instead. See
gtk.widget.Widget.setSizeRequest. To get the size a widget will
actually request, call gtk.widget.Widget.measure instead of
this function.
Gets the size request that was explicitly set for the widget using gtk.widget.Widget.setSizeRequest.
A value of -1 stored in width or height indicates that that dimension has not been set explicitly and the natural requisition of the widget will be used instead. See gtk.widget.Widget.setSizeRequest. To get the size a widget will actually request, call gtk.widget.Widget.measure instead of this function.