Extracted from Pike v7.8 release 866 at 2016-11-06.
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GTK2
GTK2.Container

Methods
 add()
 check_resize()
 get_border_width()
 get_children()
 get_focus_chain()
 get_focus_hadjustment()
 get_focus_vadjustment()
 get_resize_mode()
 remove()
 resize_children()
 set_border_width()
 set_focus_chain()
 set_focus_child()
 set_focus_hadjustment()
 set_focus_vadjustment()
 set_reallocate_redraws()
 set_resize_mode()
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Method GTK2.Container()->set_focus_chain()

Method set_focus_chain

GTK2.Container set_focus_chain(array focusable_widgets)

Description

Sets a focus chain, overriding the one computer automatically by GTK+.

In principle each widget in the chain should be a descendant of the container, but this is not enforced by this method, since it's allowed to set the focus chain before you pack the widgets, or have a widget in the chain that isn't always packed. The necessary checks are done when the focus chain is actually traversed.