163 lines
4.4 KiB
C
163 lines
4.4 KiB
C
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//*********************************************************************
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//* Microsoft Windows **
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//* Copyright(c) Microsoft Corp., 1999 **
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//*********************************************************************
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//
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// CFACTORY.H - Header file for the Implementation of IClassFactory
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//
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// HISTORY:
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//
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// 1/27/99 a-jaswed Created.
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//
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// Base class for reusing a single class factory for all
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// components in a DLL.
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#ifndef __CFactory_h__
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#define __CFactory_h__
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#include "cunknown.h"
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///////////////////////////////////////////////////////////
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// Forward reference.
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//
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class CFactoryData;
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// Global data used by CFactory.
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extern CFactoryData g_FactoryDataArray[];
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extern int g_cFactoryDataEntries;
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//////////////////////////////////////////////////////////////////////////////////////
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// Component creation function pointer.
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//
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typedef HRESULT (*FPCREATEINSTANCE)(IUnknown*, CUnknown**);
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//////////////////////////////////////////////////////////////////////////////////////
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// typedefs
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//
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// The special registration function is used to add custom registration and
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// unregistration code to the component. It takes a single parameter.
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// TRUE = Reg and FALSE = UnReg.
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typedef void (*FPSPECIALREGISTRATION)(BOOL);
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//////////////////////////////////////////////////////////////////////////////////////
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// CFactoryData -
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//
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// Information CFactory needs to create a component supported
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// by the DLL.
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class CFactoryData
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{
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public:
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// The class ID for the component
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const CLSID* m_pCLSID;
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// Pointer to the function that creates it
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FPCREATEINSTANCE CreateInstance;
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// Name of the component to register in the registry
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const WCHAR* m_RegistryName;
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// ProgID
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const WCHAR* m_szProgID;
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// Version independent ProgID
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const WCHAR* m_szVerIndProgID;
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// Helper function for finding the class id
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BOOL IsClassID(const CLSID& clsid) const
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{return (*m_pCLSID == clsid) ;}
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// Function for performing special registration
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FPSPECIALREGISTRATION SpecialRegistration ;
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//----- Out of process server support -----
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// Pointer running class factory associated with this component.
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IClassFactory* m_pIClassFactory ;
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// Magic cookie to identify running object
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DWORD m_dwRegister ;
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} ;
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///////////////////////////////////////////////////////////
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//
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// Class Factory
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//
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class CFactory : public IClassFactory
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{
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public:
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// IUnknown
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virtual HRESULT __stdcall QueryInterface( const IID& iid,
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void** ppv) ;
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virtual ULONG __stdcall AddRef() ;
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virtual ULONG __stdcall Release() ;
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// IClassFactory
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virtual HRESULT __stdcall CreateInstance( IUnknown* pUnkOuter,
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const IID& iid,
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void** ppv) ;
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virtual HRESULT __stdcall LockServer(BOOL bLock);
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// Constructor - Pass pointer to data of component to create.
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CFactory(const CFactoryData* pFactoryData) ;
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// Destructor
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~CFactory() {/*empty*/ }
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// ----- static FactoryData support functions. -----
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// DllGetClassObject Support
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static HRESULT GetClassObject( const CLSID& clsid,
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const IID& iid,
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void** ppv);
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// Helper function for DllCanUnloadNow
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static BOOL IsLocked()
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{ return (s_cServerLocks > 0) ; }
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// Functions to [Un]Register all components.
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static HRESULT RegisterAll();
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static HRESULT UnregisterAll();
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// Functions to determine if component can be unloaded.
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static HRESULT CanUnloadNow();
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#ifdef _OUTPROC_SERVER_
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// ----- Out of process server support -----
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static BOOL StartFactories() ;
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static void StopFactories() ;
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static DWORD s_dwThreadID;
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// Shut down the application.
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static void CloseExe()
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{
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if (CanUnloadNow() == S_OK)
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{
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::PostThreadMessage(s_dwThreadID, WM_QUIT, 0, 0);
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}
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}
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#else
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// CloseExe doesn't do anything if we are in process.
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static void CloseExe() {/*Empty*/}
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#endif
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public:
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// Reference Count
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LONG m_cRef;
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// Pointer to information about class this factory creates.
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const CFactoryData* m_pFactoryData;
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// Count of locks
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static LONG s_cServerLocks ;
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// Module handle
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static HMODULE s_hModule ;
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};
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#endif
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