The whole GtkCustomLayout class is mostly a C convenience API, and
there's no reason why high level languages should use it.
}
/**
- * gtk_custom_layout_new:
+ * gtk_custom_layout_new: (constructor) (skip)
* @request_mode: (nullable): a function to retrieve
* the #GtkSizeRequestMode of the widget using the layout; the
* default request mode is %GTK_SIZE_REQUEST_CONSTANT_SIZE
- * @measure: a function to measure the widget using the layout manager
- * @allocate: a function to allocate the children of the widget using
+ * @measure: (not nullable): a function to measure the widget using the layout manager
+ * @allocate: (not nullable): a function to allocate the children of the widget using
* the layout manager
*
* Creates a new legacy layout manager.