| Lesson 7 | In-process COM servers and DllGetClassObject |
| Objective | Describe what DllGetClassObject does. |
In-process COM Servers and DllGetClassObject
In-process servers provide class factories via functionDllGetClassObject:
STDAPI DllGetClassObject(const CLSID& rclsid, const IID& riid, VOID ** ppv);
COM calls DllGetClassObject on behalf of a COM client passing in a CLSID, an IID, and a
The CLSID is the CLSID of the COM object we want a class factory for; the IID is
If the server supports the requested COM object, it creates a class factory and calls
VOID ** output parameter. The CLSID is the CLSID of the COM object we want a class factory for; the IID is
IID_IClassFactory. If the server supports the requested COM object, it creates a class factory and calls
QueryInterface in the new class factory. The following code demonstrates an implementation of DllGetClassObject.
Public iClassFactory