Determines how widgets should be packed inside menubars
and menuitems contained in menubars.
GTK_PACK_DIRECTION_LTR
Widgets are packed left-to-right
GTK_PACK_DIRECTION_RTL
Widgets are packed right-to-left
GTK_PACK_DIRECTION_TTB
Widgets are packed top-to-bottom
GTK_PACK_DIRECTION_BTT
Widgets are packed bottom-to-top
Determines how widgets should be packed inside menubars and menuitems contained in menubars. GTK_PACK_DIRECTION_LTR Widgets are packed left-to-right GTK_PACK_DIRECTION_RTL Widgets are packed right-to-left GTK_PACK_DIRECTION_TTB Widgets are packed top-to-bottom GTK_PACK_DIRECTION_BTT Widgets are packed bottom-to-top