func (v *TreeViewColumn) PackStart(cell ICellRenderer, expand bool) {
	C.gtk_tree_view_column_pack_start(v.native(), cell.toCellRenderer(), gbool(expand))
}
func (v *TreeViewColumn) PackStart(cell ICellRenderer, expand bool) {
	C.gtk_tree_view_column_pack_start(v.native(), cell.toCellRenderer(), gbool(expand))
}
// PackStart() is a wrapper around gtk_tree_view_column_pack_start().