GtkExpander
A container which can hide its child
A #GtkExpander allows the user to hide or show its child by clicking on an expander triangle similar to
the triangles used in a #GtkTreeView.
@label:
@Returns:
@label:
@Returns:
@expander:
@expanded:
@expander:
@Returns:
@expander:
@spacing:
@expander:
@Returns:
@expander:
@label:
@expander:
@Returns:
@expander:
@use_underline:
@expander:
@Returns:
@expander:
@label_widget:
@expander:
@Returns:
@expander: the object which received the signal.