/**
* gtk_widget_size_request:
* @widget: a #GtkWidget
- * @requisition: a #GtkRequisition to be filled in
+ * @requisition: (out): a #GtkRequisition to be filled in
*
* This function is typically used when implementing a #GtkContainer
* subclass. Obtains the preferred size of a widget. The container
/**
* gtk_widget_get_child_requisition:
* @widget: a #GtkWidget
- * @requisition: a #GtkRequisition to be filled in
+ * @requisition: (out): a #GtkRequisition to be filled in
*
* This function is only for use in widget implementations. Obtains
* @widget->requisition, unless someone has forced a particular
/**
* gtk_widget_size_allocate:
* @widget: a #GtkWidget
- * @allocation: position and size to be allocated to @widget
+ * @allocation: (inout): position and size to be allocated to @widget
*
* This function is only used by #GtkContainer subclasses, to assign a size
* and position to their child widgets.