CODEWITHSUNDEEP
c++qt
Francisco Silva
Francisco Silva

Reputation: 549

Convert short/dos style path name to full path name

The title says it all. I've seen many solutions to execute the oposite operation but not this way.

I'm using Qt to create a temporary file. If I get its name it will be something on the likes of: 

QTemporaryFile tempFile;
tempFile.open();
qDebug() << tempFile.fileName();
// C:/Users/USERNA~1/AppData/Local/Temp/qt_temp.Hp4264

I have tried some solutions such as using QFileInfo: 

QFileInfo fileInfo(tempFile);
qDebug() << fileInfo.filePath()

And QDir:

QDir dir(tempFile.fileName());  
qDebug() << dir.absolutePath();

Without success.

Is there any solution for this using purely Qt? I know I can navigate the directory tree to find the full name but I was trying to avoid this, especially because of the possibility of two folders with the same prefix.

Upvotes: 3

Views: 1433

Answers (1)

ratchet freak
ratchet freak

Reputation: 48186

the win32 function GetLongPathName is your answer.

QString shortPath = tempFile.fileName();
int length = GetLongPathNameW(shortPath.utf16(),0,0);
wchar_t* buffer = new wchar_t[length];

length = GetLongPathNameW(shortPath.utf16(), buffer, length);
QString fullpath = QString::fromUtf16(buffer, length);
delete[] buffer;

there is no pure Qt function for this because only windows does this (and Qt is meant to be portable)

Upvotes: 5

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