(* GTypeClassCacheFunc) (
  gpointer cache_data,
  GTypeClass* g_class


A callback function which is called when the reference count of a class drops to zero.

It may use g_type_class_ref() to prevent the class from being freed. You should not call g_type_class_unref() from a GTypeClassCacheFunc function to prevent infinite recursion, use g_type_class_unref_uncached() instead.

The functions have to check the class id passed in to figure whether they actually want to cache the class of this type, since all classes are routed through the same GTypeClassCacheFunc chain.


cache_data gpointer

Data that was given to the g_type_add_class_cache_func() call.

 The argument can be NULL.
 The data is owned by the caller of the function.
g_class GTypeClass

The GTypeClass structure which is unreferenced.

 The data is owned by the caller of the function.

Return value

Returns: gboolean

TRUE to stop further GTypeClassCacheFuncs from being called, FALSE to continue.