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Thread: Retrieving windows Drive labels

  1. #1
    Join Date
    Aug 2009
    Thanked 1 Time in 1 Post

    Default Retrieving windows Drive labels

    Hello fellow programmers,

    i have been introducted to QT some while ago while i already had java and c++ experience. So programming in QT was easy to learn, and usually i find my way around problems or things i want. But here is the deal.

    To make a program that can read external devices such as SD cards or usb sticks is easy using the QDir, but i am making a program for a user who needs to load data from his device to the pc. Now for this i want to read out the drives on a windows system, also not hard to aquire using the next lines:

    foreach( QFileInfo drive, QDir::drives() )
    qDebug() << "Drive: " << drive.absolutePath();

    now this in return gives the Letters form the drives but not the name, wich i mean the label you can give in windows. This is nice to because user usually label there devies.

    So is there anyone here able to help me out. I tried sorts of things myself but i am not a professionol yet, just a normal programmer.

    thanx in advance

    Kenny Baas

  2. #2
    Join Date
    Mar 2007
    Thanked 2 Times in 2 Posts
    Qt products
    MacOS X Windows

    Default Re: Retrieving windows Drive labels

    Here is what I am using :

    Qt Code:
    1. #include <qt_windows.h>
    3. // Function to retrieve volume names
    5. QString TvInfo(QString & tdrive)
    6. {
    7. WCHAR szVolumeName[256] ;
    8. WCHAR szFileSystemName[256];
    9. DWORD dwSerialNumber = 0;
    10. DWORD dwMaxFileNameLength=256;
    11. DWORD dwFileSystemFlags=0;
    12. bool ret = GetVolumeInformation( (WCHAR *) tdrive.utf16(),szVolumeName,256,&dwSerialNumber,&dwMaxFileNameLength,&dwFileSystemFlags,szFileSystemName,256);
    13. if(!ret)return QString("");
    14. QString vName=QString::fromUtf16 ( (const ushort *) szVolumeName) ;
    15. vName.trimmed();
    16. return vName;
    17. }
    20. // Get volume name of c drive
    21. QString tdrv="C:\\";
    22. QString volume_name = TvInfo(tdrv);
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    Hope this helps

  3. #3
    Join Date
    Aug 2009
    Thanked 1 Time in 1 Post

    Default Re: Retrieving windows Drive labels

    Thanx a lot, i am gonna try this today.

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