[Solved] Convert char * to wchar*

Posted 23 Mar '11 - 2:00

MartinTaylor432

Edited 23 Mar '11 - 2:08

Mika Wendelius177K

Solution 1

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;
}

However, why don't you simply do

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

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Posted 23 Mar '11 - 2:48

CPallini245K

Edited 23 Mar '11 - 2:49

Comments

Olivier Levrey - 23 Mar '11 - 8:49

Voted 5.

CPallini - 23 Mar '11 - 8:50

Thanks

klusner - 23 Mar '11 - 8:54

Thank u.. I'll try it the reason im not using -> const WCHAR *pwcsName = L"D:\\"; is that i'm retrieving string "D:\\" in some variable and them assigning it to const WCHAR *pwcsName

CPallini - 23 Mar '11 - 10:10

If you're using MFC or ATL, have a look at 'ATL and MFC String Conversion Macros': http://msdn.microsoft.com/en-us/library/87zae4a3.aspx

Solution 2

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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Posted 23 Mar '11 - 2:53

Kurt Degiorgio2.6K

Edited 23 Mar '11 - 2:56

Solution 3

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();

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Posted 23 Mar '11 - 5:22

Nemanja Trifunovic71.6K

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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Convert char * to wchar*

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Convert char * to wchar*

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