tool.item
should be considered important. The GtkToolButton
class uses this property to determine whether to show or hide its label
when the toolbar style is GTK_TOOLBAR_BOTH_HORIZ
. The result is that
only tool buttons with the "is_important" property set have labels, an
effect known as "priority text"gtkToolItemSetIsImportant(object, is.important)
object
is.important