dllmain.cpp

PGP8.0源码 请认真阅读您的文件包然后写出其具体功能

/*____________________________________________________________________________
		Copyright (C) 2002 PGP Corporation
        All rights reserved.

        $Id: DllMain.cpp,v 1.9 2002/08/28 02:06:10 wjb Exp $
____________________________________________________________________________*/

#include "pgpClassesConfig.h"

#include <commctrl.h>
#include <ole2.h>

#include "CPFLImpFactoryWin32.h"
#include "UModuleInstance.h"

#include "pgpDiskUI.h"
#include "CPGPdiskEngine.h"

#include "CUIImpFactoryWin32.h"
#include "CUISubsystemsWin32.h"

_USING_PGP

_UNNAMED_BEGIN

// Static variables

PGPBoolean	EngineInitialized	= FALSE;
PGPBoolean	OLEInitialized		= FALSE;
PGPUInt32	PGPdiskUIRefCount	= 0;

_UNNAMED_END


// Dll startup and shutdown functions

PGPError 
PGPdiskUIExport 
PGPdiskUIInitLibrary()
{
	PGPError	error	= kPGPError_NoErr;

	try
	{
		if (PGPdiskUIRefCount++ == 0)
		{
			INITCOMMONCONTROLSEX	initEx;

			initEx.dwSize = sizeof(initEx);
			initEx.dwICC = ICC_BAR_CLASSES | ICC_COOL_CLASSES | 
				ICC_LISTVIEW_CLASSES | ICC_PROGRESS_CLASS | ICC_UPDOWN_CLASS;

			if (!InitCommonControlsEx(&initEx))
				THROW_PGPERROR(kPGPError_Win32CommCtrlOpFailed);

			LoadLibrary ("RichEd20.dll");

			LoadLibrary ("RichEd20.dll");

			switch (OleInitialize(NULL))
			{
			case S_OK:
			case S_FALSE:
				OLEInitialized = TRUE;
				break;

			default:
				THROW_PGPERROR(kPGPError_Win32COMOpFailed);
				break;
			}

			CPGPdiskEngine::InitLibrary();
			EngineInitialized = TRUE;

			CPFLImpFactoryWin32::CreateInstance();
			CUIImpFactoryWin32::CreateInstance();
			CUISubsystemsWin32::CreateInstance();
			CUISubsystemsWin32::CreateSubsystems();
		}
	}
	catch (CComboError& caughtErr)
	{
		error = caughtErr.pgpErr;
		PGPdiskUICleanupLibrary();	// this is safe
	}

	return error;
}

void 
PGPdiskUIExport 
PGPdiskUICleanupLibrary()
{
	try
	{
		if ((PGPdiskUIRefCount > 0) && 
			(--PGPdiskUIRefCount == 0))
		{
			CUISubsystemsWin32::DestroySubsystems();
			CUISubsystemsWin32::DestroyInstance();
			CUIImpFactoryWin32::DestroyInstance();
			CPFLImpFactoryWin32::DestroyInstance();

			if (EngineInitialized)
			{
				CPGPdiskEngine::CleanupLibrary();
				EngineInitialized = FALSE;
			}

			if (OLEInitialized)
			{
				OleUninitialize();
				OLEInitialized = FALSE;
			}
		}
	}
	catch (CComboError&) { }
}

BOOL 
WINAPI 
DllMain(HINSTANCE hInstDll, DWORD dwReason, LPVOID lpvReserved)
{
	switch (dwReason)
	{
	case DLL_PROCESS_ATTACH:
		UModuleInstance::Set(hInstDll);
		break;

	case DLL_PROCESS_DETACH:
	case DLL_THREAD_ATTACH:
	case DLL_THREAD_DETACH:
		break;

	default:
		pgpAssert(FALSE);
		break;
	}

	return TRUE;
}