setPolicy
Sets the scrollbar policy for the horizontal and vertical scrollbars.
The policy determines when the scrollbar should appear; it is a value from the enum@Gtk.PolicyType enumeration. If %GTK_POLICY_ALWAYS, the scrollbar is always present; if %GTK_POLICY_NEVER, the scrollbar is never present; if %GTK_POLICY_AUTOMATIC, the scrollbar is present only if needed (that is, if the slider part of the bar would be smaller than the trough — the display is larger than the page size).
Parameters
hscrollbarPolicy
policy for horizontal bar
vscrollbarPolicy
policy for vertical bar