www.pudn.com > WinMerge-2.6.12-src.zip > tools.cpp

/* tools.cpp: Supplementary classes and functions for Merge7z 
 * Copyright (c) 2003 Jochen Tucht 
 * 
 * License:	This program is free software; you can redistribute it and/or modify 
 *			it under the terms of the GNU General Public License as published by 
 *			the Free Software Foundation; either version 2 of the License, or 
 *			(at your option) any later version. 
 * 
 *			This program is distributed in the hope that it will be useful, 
 *			but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
 *			GNU General Public License for more details. 
 * 
 *			You should have received a copy of the GNU General Public License 
 *			along with this program; if not, write to the Free Software 
 *			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 * 
 
Please mind 2. a) of the GNU General Public License, and log your changes below. 
 
DATE:		BY:					DESCRIPTION: 
==========	==================	================================================ 
2003/12/09	Jochen Tucht		Created 
2005/02/26	Jochen Tucht		Changed as explained in revision.txt 
2005/08/20	Jochen Tucht		Remove unused EnumList 
*/ 
 
#include "stdafx.h" 
 
#ifndef StrIsIntlEqual 
#ifdef UNICODE 
#define StrIsIntlEqual          StrIsIntlEqualW 
#else 
#define StrIsIntlEqual          StrIsIntlEqualA 
#endif 
#endif 
 
#include "tools.h" 
 
/** 
 * @brief Construct and throw a Complain object containing an error message. 
 */ 
Complain::Complain(LPCTSTR format, ...) 
{ 
	wvsprintf(msg, format, (va_list)(&format + 1)); 
	throw this; 
} 
 
Complain::Complain(DWORD dwError, LPCTSTR pszContext, HMODULE hContext) 
{ 
	LPTSTR pszMessage = msg; 
	if (pszContext) 
	{ 
		pszMessage += wsprintf(pszMessage, _T("%.500s"), pszContext); 
		if (hContext) 
		{ 
			*pszMessage++ = '@'; 
			int cch = ::GetModuleFileName(hContext, pszMessage, 500); 
			if (cch == 0) 
			{ 
				cch = wsprintf(pszMessage, _T("%08lX"), hContext); 
			} 
			pszMessage += cch; 
		} 
		*pszMessage++ = ':'; 
		*pszMessage++ = '\n'; 
	} 
	FormatMessage 
	( 
		FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwError, 
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), 
		pszMessage, 500, NULL 
	); 
	throw this; 
} 
 
/** 
 * @brief Report error to user. To be called from within catch block. 
 */ 
int Complain::Alert(HWND hwndParent, UINT flags) 
{ 
	return MessageBox(hwndParent, msg, 0, flags); 
} 
 
/** 
 * @brief Complain that some DLL failed to CreateObject() something. 
 */ 
void ComplainCreateObject(HMODULE handle, LPCTSTR name) 
{ 
	TCHAR szContext[800]; 
	LPTSTR pszContext = szContext + wsprintf(szContext, _T("%.100s@"), name); 
	::GetModuleFileName(handle, pszContext, 500); 
	Complain(RPC_S_INTERFACE_NOT_FOUND, szContext); 
}  
 
/** 
 * @brief Release interface until ref count reaches 0. 
 * 
 * Very bad practice in general, but helps avoiding resource leaks 
 * due to inaccurate ref counting. 
 */ 
void NTAPI Release(IUnknown *punk) 
{ 
	while (punk) 
	{	 
		ULONG Release = punk->Release(); 
		if (Release == 0) 
		{ 
			punk = 0; 
		} 
	} 
}