mbstowcs()/wcstombs() 函数宽字符转多字符互转

最新推荐文章于 2025-09-09 10:07:19 发布

原创最新推荐文章于 2025-09-09 10:07:19 发布 · 2k 阅读

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本文介绍了如何在C++中实现宽字符(wchar_t)与窄字符(char)之间的相互转换。通过两个函数示例，详细展示了从宽字符转窄字符(ws2s)及从窄字符转宽字符(s2ws)的具体实现过程。

std::string ws2s(const std::wstring& ws)  
{  
    std::string curLocale = setlocale(LC_ALL, NULL);        // curLocale = "C";  
    setlocale(LC_ALL, "chs");  
    const wchar_t* _Source = ws.c_str();  
    size_t _Dsize = 2 * ws.size() + 1;  
    char *_Dest = new char[_Dsize];  
    memset(_Dest,0,_Dsize);  
    wcstombs(_Dest,_Source,_Dsize);  
    std::string result = _Dest;  
    delete []_Dest;  
    setlocale(LC_ALL, curLocale.c_str());  
    return result;  
}

std::wstring s2ws(const std::string& s)  
{  
    setlocale(LC_ALL, "chs");   
    const char* _Source = s.c_str();  
    size_t _Dsize = s.size() + 1;  
    wchar_t *_Dest = new wchar_t[_Dsize];  
    wmemset(_Dest, 0, _Dsize);  
    mbstowcs(_Dest,_Source,_Dsize);  
    std::wstring result = _Dest;  
    delete []_Dest;  
    setlocale(LC_ALL, "C");  
    return result;  
}