将char *转换为wchar * [英] Convert char * to wchar*

问题描述

我正在尝试将字符串转换为Unicode字符串

I am trying to convert a string to a Unicode String

char *p="D:\";
const WCHAR *pwcsName;

现在我想将p(char *)转换为pwcsName(WCHAR *).
有人可以建议我怎么做吗?

使用"mbtowc"函数还是MultiByteToWideChar完成...

请给我建议代码吗?

Now I want convert p(char *) to pwcsName(WCHAR *).
Can anybody suggest me how do this?

Is it done using "mbtowc" function or MultiByteToWideChar...

plz can someone suggest me code for that?

推荐答案

例如，这种方式:

for instance, this way:

  char *p="D:\\"; //just for proper syntax highlighting ..."
  const WCHAR *pwcsName;
  // required size
  int nChars = MultiByteToWideChar(CP_ACP, 0, p, -1, NULL, 0);
  // allocate it
  pwcsName = new WCHAR[nChars];
  MultiByteToWideChar(CP_ACP, 0, p, -1, (LPWSTR)pwcsName, nChars);
  // use it....
    
  // delete it
  delete [] pwcsName;
}

但是，为什么不简单地做

However, why don''t you simply do

const WCHAR *pwcsName = L"D:\\";

?

?

如果您100％确定您的char*字符串仅是ASCII，则加宽"最快，最简单的方法就是:

If you are 100% sure your char* string is ASCII only, the fastest and easiest way to "widen" it would be something like:

std::wstring w;
std::copy(p, p + strlen(p), back_inserter(w));
const WCHAR *pwcsName = w.c_str();

要转换为unicode，您需要使用以下函数:

MultiByteToWideChar->

http://msdn.microsoft.com/en-us/library/dd319072 (v = vs.85).aspx [

To Convert to unicode you need to use the following function:

MultiByteToWideChar -->

http://msdn.microsoft.com/en-us/library/dd319072(v=vs.85).aspx[^]

example of MultiByteToWideChar:

MultiByteToWideChar(CP_UTF8, 0, buf, -1 , NULL, 0);

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