Sort in column added to qtreeview



  • I have inherited QFileSystemModel like this.
    It seems to work, kinda. But I have problem sorting.

    //fileinfobaseclass.h
    class FileBaseClass : public QFileSystemModel{
    public:    
    FileBaseClass();
    FileBaseClass(QObject * parent);
    ~FileBaseClass();
    int columnCount(const QModelIndex& parent = QModelIndex()) const;
    QVariant data(const QModelIndex& index,int role) const;
    };
    

    .

    //fileinfobaseclass.cpp
    QVariant FileBaseClass::data(const QModelIndex& index,int role) const{
     if(!index.isValid()){
        return QFileSystemModel::data(index,role);}
    if(index.column()==columnCount()-1){
        QFileInfo *qf=new QFileInfo(QFileSystemModel::fileInfo(index).absoluteFilePath());
    QString fileInfo;
        switch(role)  {
        case(Qt::DisplayRole): {
            if ( qf->isWritable ()){
                fileInfo+="rw";
            }
            if ( qf->isSymLink ()){
                fileInfo+="s";
            }
            return fileInfo;
        }
        default:{}
      }
     }
    return QFileSystemModel::data(index,role);
    }
    

    .
    //In MainWindow
    treeViewModel->sort ( 4 , Qt::AscendingOrder );


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