gtk/tree_view.go
func (v *TreeView) SetModel(model ITreeModel) {
	var mptr *C.GtkTreeModel
	if model != nil {
		mptr = model.toTreeModel()
	}
	C.gtk_tree_view_set_model(v.native(), mptr)
}
func (v *TreeView) SetModel(model ITreeModel) {
	var mptr *C.GtkTreeModel
	if model != nil {
		mptr = model.toTreeModel()
	}
	C.gtk_tree_view_set_model(v.native(), mptr)
}
// SetModel is a wrapper around gtk_tree_view_set_model().