gtk/tree_view.go
func (v *TreeView) ExpandRow(path *TreePath, openAll bool) bool {
	return gobool(C.gtk_tree_view_expand_row(v.native(), path.native(), gbool(openAll)))
}
func (v *TreeView) ExpandRow(path *TreePath, openAll bool) bool {
	return gobool(C.gtk_tree_view_expand_row(v.native(), path.native(), gbool(openAll)))
}
// ExpandRow is a wrapper around gtk_tree_view_expand_row().