Wchar_t to string Conversion

Question

I want to convert the strFileNotifyInfo[1].FileName(Wchar_t) to a string so that i can see the filepath. but i can't make it work.

Here is my code:

while(TRUE)
{
    if( ReadDirectoryChangesW( hDir, (LPVOID)&strFileNotifyInfo, sizeof(strFileNotifyInfo), FALSE, FILE_NOTIFY_CHANGE_LAST_WRITE || FILE_NOTIFY_CHANGE_CREATION, &dwBytesReturned, NULL, NULL) == 0)
    {
        cout << "Reading Directory Change" << endl;
    }
    else
    {

        cout << ("File Modified: ") << strFileNotifyInfo[1].FileName << endl;
        cout << ("Loop: ") << nCounter++ << endl;
    }
}

try WideCharToMultiByte API http://msdn.microsoft.com/en-us/library/windows/desktop/dd374130%28v=vs.85%29.aspx — Nika, Feb 10 '13 at 16:51

score 0 · Answer 1 · answered Feb 10 '13 at 16:47

0

Use wcout when working with wide character data.

std::wcout << L"File Modified: " << strFileNotifyInfo[1].FileName << std::endl;

answered Feb 10 '13 at 16:47

Ben Voigt

277,958
43
419
720

y0prst · Answer 2 · 2013-02-10T17:22:19.130

0

You should also keep in mind that FileName is not null-terminated.

WCHAR* filename_w = strFileNotifyInfo[1].FileName;
DWORD filename_len = strFileNotifyInfo[1].FileNameLength;
std::string filename(filename_w, filename_w + filename_len);
std::cout << "File Modified: " << filename << std::endl;

edited Feb 10 '13 at 17:22

answered Feb 10 '13 at 17:15

y0prst

611
1
6
13

Wchar_t to string Conversion

2 Answers2