RAD Studio VCL Reference
Classes.UnRegisterModuleClasses Function

Unregisters all classes defined in a specified module.

procedure UnRegisterModuleClasses(Module: HMODULE);
UnRegisterModuleClasses(HMODULE Module);

Call UnRegisterModuleClasses to unregister all object classes that were registered by the module with the handle specified by the Module parameter. When a class is unregistered, it can't be loaded or saved by the component streaming system. 

After unregistering a class, its name can be reused to register another object class. 


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