The GTK.Misc widget is an abstract widget which is not useful
itself, but is used to derive subclasses which have alignment and
padding attributes.
The horizontal and vertical padding attributes allows extra space
to be added around the widget.
The horizontal and vertical alignment attributes enable the widget
to be positioned within its allocated area. Note that if the widget
is added to a container in such a way that it expands automatically
to fill its allocated area, the alignment settings will not alter
the widgets position.
GTK.Vbox(0,0)->add(GTK.Label("Label"))->set_usize(100,20)
GTK.Vbox(0,0)->add(GTK.Label("Label")->set_alignment(1.0,0.0))->set_usize(100,20)
GTK.Vbox(0,0)->add(GTK.Label("Label")->set_alignment(0.0,0.0))->set_usize(100,20)
GTK.MenuShell()->select_item()