A container for adding scrolling capabilities to widgets without native
A GtkViewport provides scrolling capabilities to widgets that
don't support native scrolling. E.g., a GtkLabel
or a GtkVBox could be packed into a
GtkScrolledWindow, but since the classes
don't support the
signal, using the scrollbars wouldn't work.
A viewport also takes care to show only a certain part of
the widget, hiding the rest of it that is not in the visible area.
Creates a new viewport.
Use get_property and set_property methods to access these.
One or both adjustments are changed.