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#ifndef __CFactory_h__ 
#define __CFactory_h__ 
 
#include "CUnknown.h" 
/////////////////////////////////////////////////////////// 
 
// Forward reference 
class CFactoryData ; 
 
// Global data used by CFactory 
extern CFactoryData g_FactoryDataArray[] ; 
extern int g_cFactoryDataEntries ; 
 
////////////////////////////////////////////////////////// 
// 
//  Component creation function 
// 
class CUnknown ; 
 
typedef HRESULT (*FPCREATEINSTANCE)(IUnknown*, CUnknown**) ; 
 
/////////////////////////////////////////////////////////// 
// 
// CFactoryData 
//   - Information CFactory needs to create a component 
//     supported by the DLL 
// 
class CFactoryData 
{ 
public: 
	// The class ID for the component 
	const CLSID* m_pCLSID ; 
 
	// Pointer to the function that creates it 
	FPCREATEINSTANCE CreateInstance ; 
 
	// Name of the component to register in the registry 
	const char* m_RegistryName ; 
 
	// ProgID 
	const char* m_szProgID ; 
 
	// Version-independent ProgID 
	const char* m_szVerIndProgID ; 
 
	// Helper function for finding the class ID 
	BOOL IsClassID(const CLSID& clsid) const 
		{ return (*m_pCLSID== clsid) ;} 
} ; 
 
 
/////////////////////////////////////////////////////////// 
// 
// Class Factory 
// 
class CFactory : public IClassFactory 
{ 
public: 
	// IUnknown 
	virtual HRESULT __stdcall QueryInterface(const IID& iid, void** ppv) ; 
	virtual ULONG   __stdcall AddRef() ; 
	virtual ULONG   __stdcall Release() ; 
	 
	// IClassFactory 
	virtual HRESULT __stdcall CreateInstance(IUnknown* pUnknownOuter, 
	                                         const IID& iid, 
	                                         void** ppv) ; 
	virtual HRESULT __stdcall LockServer(BOOL bLock) ;  
 
	// Constructor - Pass pointer to data of component to create. 
	CFactory(const CFactoryData* pFactoryData) ; 
 
	// Destructor 
	~CFactory() {} 
 
	// 
	// Static FactoryData support functions 
	// 
 
	// DllGetClassObject support 
	static HRESULT GetClassObject(const CLSID& clsid, 
	                              const IID& iid,  
	                              void** ppv) ; 
 
	// Helper function for DllCanUnloadNow  
	static BOOL IsLocked() 
		{ return (s_cServerLocks > 0) ;} 
 
	// Functions to [un]register all components 
	static HRESULT RegisterAll() ; 
	static HRESULT UnregisterAll() ; 
 
	// Function to determine if component can be unloaded 
	static HRESULT CanUnloadNow() ; 
 
public: 
	// Reference Count 
	LONG m_cRef ; 
 
	// Pointer to information about class this factory creates 
	const CFactoryData* m_pFactoryData ; 
       
	// Count of locks 
	static LONG s_cServerLocks ;    
 
	// Module handle 
	static HMODULE s_hModule ; 
} ; 
 
#endif