Wchar_t到字符串的转换

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;
    }
}

Answer 1

处理宽字符数据时，请使用wcout 。

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

Answer 2

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;