问题描述
WideCharToMultiByte（）和wcstombs（）之间有什么区别
何时使用哪个？
What is the difference between WideCharToMultiByte() and wcstombs()When to use which one?
推荐答案
简单来说： WideCharToMultiByte 函数暴露参数列表中用于转换的编码/代码页，而 wcstombs 才不是。这是一个主要的PITA，作为标准什么编码用于产生 wchar_t ，而你作为一个开发人员当然需要知道你正在转换/从哪个编码。
In a nutshell: the WideCharToMultiByte function exposes the encodings/code pages used for the conversion in the parameter list, while wcstombs does not. This is a major PITA, as the standard does not define what encoding is to be used to produce the wchar_t, while you as a developer certainly need to know what encoding you are converting to/from.
， WideCharToMultiByte 当然是Windows API函数，不能在任何其他平台上使用。
Apart from that, WideCharToMultiByte is of course a Windows API function and is not available on any other platform.
如果你的应用程序没有专门写成可移植到非Windows操作系统，使用 WideCharToMultiByte 。否则，您可能需要使用。
Therefore I would suggest using WideCharToMultiByte without a moment's thought if your application is not specifically written to be portable to non-Windows OSes. Otherwise, you might want to wrestle with wcstombs or (preferably IMHO) look into using a full-feature portable Unicode library such as ICU.
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