《windows核心编程》读书笔记1-chapter1

《windows核心编程》读书笔记1-chapter1
//WinErrCodeformater.h

/************************************************************************/

/*CWinErrCodeFormatter，用于将错误码翻译成文本，可以指定文本的语言     */

/*这是一个functor

/************************************************************************/

class CWinErrCodeFormatter

{

public:

    CWinErrCodeFormatter(long errorCode=-1, LCID lang=MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED));

public:

    virtual ~CWinErrCodeFormatter(void);

public:

    CString operator()();

    CString operator()(long errorCode, LCID lang=MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED));

 

private:

    ///<summary>

    ///字符串的语言

    ///</summary>

    LCID m_lang;

 

    ///<summary>

    ///错误码

    ///</summary>

    long m_errorCode;

};

 

 

// WinErrCodeformater.cpp

#include "StdAfx.h"

#include "WinErrCodeFormatter.h"

 

CWinErrCodeFormatter::CWinErrCodeFormatter(long errorCode, LCID lang):m_errorCode(errorCode),m_lang(lang)

{

}

 

CWinErrCodeFormatter::~CWinErrCodeFormatter(void)

{

}

 

 

CString CWinErrCodeFormatter::operator()()

{

    HLOCAL  hlocal = NULL;

   

    BOOL bOK = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM| FORMAT_MESSAGE_ALLOCATE_BUFFER,

       NULL, m_errorCode, m_lang, (PTSTR)&hlocal, 0, NULL);

   

    if(!bOK)

    {

       HMODULE hDll = LoadLibraryEx(_T("netmsg.dll"), NULL, DONT_RESOLVE_DLL_REFERENCES);

       if(hDll)

       {

           FormatMessage(FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_FROM_SYSTEM, hDll, m_errorCode, m_lang, (PTSTR)&hlocal, 0, NULL);

           FreeLibrary(hDll);

       }

    }

 

    if(hlocal)

    {

       CString result((PCTSTR)LocalLock(hlocal));      

       LocalFree(hlocal);

       return result;

    }

    else      

       return _T("get error message failed!");         

}

 

 CString CWinErrCodeFormatter::operator()(long errorCode, LCID lang)

 {

     m_errorCode = errorCode;

     m_lang = lang;

     return operator();

 }