A callback function which is called when the reference count of a class drops to zero. It may use TypeClass.ref to prevent the class from being freed. You should not call TypeClass.unref from a GTypeClassCacheFunc function to prevent infinite recursion, use TypeClass.unrefUncached 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.

alias GTypeClassCacheFunc = int function(void* cacheData, GTypeClass* gClass)

Return Value

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