func (v *TreeViewColumn) SetFixedWidth(w int) {
	C.gtk_tree_view_column_set_fixed_width(v.native(), C.gint(w))
}
func (v *TreeViewColumn) SetFixedWidth(w int) {
	C.gtk_tree_view_column_set_fixed_width(v.native(), C.gint(w))
}
// SetFixedWidth() is a wrapper around gtk_tree_view_column_set_fixed_width().