获得GetLastError()内容

GetStrError(CString& strError, const DWORD& dwErr)
{
	LPVOID lpMsgBuf;
	//DWORD dw = GetLastError();
	FormatMessage (
		FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
		NULL,
		dwErr,
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPTSTR) &lpMsgBuf,
		0, NULL );
	strError = (char *)lpMsgBuf;
	LocalFree(lpMsgBuf);
}

个人写的：

GetStrError(CString &strError, const DWORD &dwErr)
{
    LPVOID lpMsgBuf;
    //DWORD dw = GetLastError();
    FormatMessage (
        FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
        NULL,
        dwErr,
        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
        (LPTSTR) &lpMsgBuf,
        0, NULL );
    strError = (char *)lpMsgBuf;
    LocalFree(lpMsgBuf);
}
 
MyAfxMessageBox(CString strError)
{
    CString str;
    DWORD dwErr = GetLastError();
    GetStrError(str, dwErr);
    CString strTemp;
    strTemp.Format(_T("程序运行错误!%s\r\n错误码:%lu\r\n错误内容:%s"), strError, dwErr, str);
    AfxMessageBox(strTemp);
}
 
try
{
    AfxMessageBox(strMsg, MB_ICONINFORMATION);
}
catch (CMemoryException *e)
{
    MyAfxMessageBox(_T("CMemoryException"));
}
catch (CFileException *e)
{
    MyAfxMessageBox(_T("CFileException"));
}
catch (CException *e)
{
    MyAfxMessageBox(_T("CException"));
}
catch(...)
{
    MyAfxMessageBox(_T("其他"));
}