Drag and Drop without subclass a widget.

[cydside]

Could you please post a pseudo code or suggest an implementation?

[cydside]

OK, solved. Here is the job I've done:

// Form Header (frmSetBackupDir class)
 
// Added
protected:
   bool eventFilter(QObject *obj, QEvent *event);

// Form Header (frmSetBackupDir class)

// Added
protected:
   bool eventFilter(QObject *obj, QEvent *event);

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// Form Implementation
 
// Added in the CTOR
   ui->lneDirBU->installEventFilter(this);
   ui->lneDirBU->setAcceptDrops(true);

// Form Implementation

// Added in the CTOR
   ui->lneDirBU->installEventFilter(this);
   ui->lneDirBU->setAcceptDrops(true);

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bool frmSetBackupDir::eventFilter(QObject *obj, QEvent *event)
{
   if (event->type() == QEvent::DragEnter)
   {
      QDragEnterEvent *tDragEnterEvent = static_cast<QDragEnterEvent *>(event);
      tDragEnterEvent->acceptProposedAction();
 
      return true;
   }
   else if (event->type() == QEvent::DragMove)
   {
      QDragMoveEvent *tDragMoveEvent = static_cast<QDragMoveEvent *>(event);
      tDragMoveEvent->acceptProposedAction();
 
      return true;
   }
   else if (event->type() == QEvent::Drop)
   {
      QDropEvent *tDropEvent = static_cast<QDropEvent *>(event);
      tDropEvent->acceptProposedAction();
 
      qDebug() << "OK, execute your task!";
 
      return true;
   }
   else
   {
       // standard event processing
       return QObject::eventFilter(obj, event);
   }
}

bool frmSetBackupDir::eventFilter(QObject *obj, QEvent *event)
{
   if (event->type() == QEvent::DragEnter)
   {
      QDragEnterEvent *tDragEnterEvent = static_cast<QDragEnterEvent *>(event);
      tDragEnterEvent->acceptProposedAction();

      return true;
   }
   else if (event->type() == QEvent::DragMove)
   {
      QDragMoveEvent *tDragMoveEvent = static_cast<QDragMoveEvent *>(event);
      tDragMoveEvent->acceptProposedAction();

      return true;
   }
   else if (event->type() == QEvent::Drop)
   {
      QDropEvent *tDropEvent = static_cast<QDropEvent *>(event);
      tDropEvent->acceptProposedAction();

      qDebug() << "OK, execute your task!";

      return true;
   }
   else
   {
       // standard event processing
       return QObject::eventFilter(obj, event);
   }
}

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It seems to work. Better implementations are well accepted!