gtk/tree_view_column.go
func (v *TreeViewColumn) GetWidget() (*Widget, error) {
	widget := C.gtk_tree_view_column_get_widget(v.native())
	if widget == nil {
		return nil, nilPtrErr
	}
	obj := glib.Take(unsafe.Pointer(widget))
	return wrapWidget(obj), nil
}
func (v *TreeViewColumn) GetWidget() (*Widget, error) {
	widget := C.gtk_tree_view_column_get_widget(v.native())
	if widget == nil {
		return nil, nilPtrErr
	}
	obj := glib.Take(unsafe.Pointer(widget))
	return wrapWidget(obj), nil
}
// GetWidget() is a wrapper around gtk_tree_view_column_get_widget().