dirmodel.h Example File
tools/completer/dirmodel.h

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 #ifndef DIRMODEL_H
 #define DIRMODEL_H

 #include <QDirModel>

 // With a QDirModel, set on a view, you will see "Program Files" in the view
 // But with this model, you will see "C:\Program Files" in the view.
 // We acheive this, by having the data() return the entire file path for
 // the display role. Note that the Qt::EditRole over which the QCompleter
 // looks for matches is left unchanged
 class DirModel : public QDirModel
 {
 public:
     DirModel(QObject *parent = 0);
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
 };

 #endif