errinfo.cpp

这是另外一个基于CAsyncSocket类,客户端程序!

#include "stdafx.h"
#include "ErrInfo.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

CString CErrInfo::BuildSysErrMsg() const
{
	CString strSysErr;

	{
		LPTSTR lpBuffer = NULL;
		BOOL bRet = ::FormatMessage(
				FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
				NULL, m_dwSysErrCode,
				MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),
				(LPTSTR)&lpBuffer, 0, NULL);

		if (bRet) {
			strSysErr = lpBuffer;
			::LocalFree(lpBuffer);
		}
	}

	return strSysErr;
}