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如何使用 wcstombs 而不是 wideChartoMultiByte?
原标题:How to use wcstombs instead of WideCharToMultiByte ?
  • 时间:2012-05-25 10:15:50
  •  标签:
  • c++

wcstombs 有三个参数。

WideChartoMultiByte 有八个参考点。,,

如何替换?

如何使用 wcstombs 这样的写法 :

int kk = WideCharToMultiByte(936, 0, szBn, ccBn+1, 0, 0, 0, 0);

如何使用 wcstombs 这样的写法 :

int kk= WideCharToMultiByte(936,
                            0,
                            szBn,
                            ccBn+1,
                            kkburr,
                            (ccBn+1)*sizeof(wchar_t),
                            0,
                            0)

一样吗?

问题回答
  • The resulting encoding that wcstombs converts to depends on the current locale while WideCharToMultiByte can be explicitly given a codepage.
  • wcstombs converts from "wide character string", which encoding depends on the implementation of the standard library. WideCharToMultiByte converts from the string in UTF-16. Wide characters wcstombs rely upon may not be encoded in UTF-16, but in Windows wide characters are UTF-16.
  • wcstombs is portable, WideCharToMultiByte is not. If your target platform is Windows only then it doesn t matter.
  • WideCharToMultiByte allows to specify a "default character" which will be used instead of characters that can t be represented in target encoding.

因此, WideCharToMultiByte 的功率要大得多,而且很可能被用作 wcstombs 的后端。

如果您目前的代码页不是936, 那么您询问的替换是不可能的 。





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