get a pixmap for a dragged QTreeWidgetItem?

[qlands]

I tried that with:

QPixmap pixmap;
            QPainter paint(&pixmap);
            QFont font;
            QFontMetrics met(font);
            paint.drawText(met.boundingRect("Some text here"),Qt::AlignLeft,"Some text here");
            mimeData = new QMimeData;
            mimeData->setData("object/x-IMPACT-plugin", itemData);
            mimeData->setText("Some text here");
            drag = new QDrag(this);
            drag->setMimeData(mimeData);
            drag->setPixmap(pixmap);
            drag->exec(Qt::MoveAction);

QPixmap pixmap;
            QPainter paint(&pixmap);
            QFont font;
            QFontMetrics met(font);
            paint.drawText(met.boundingRect("Some text here"),Qt::AlignLeft,"Some text here");
            mimeData = new QMimeData;
            mimeData->setData("object/x-IMPACT-plugin", itemData);
            mimeData->setText("Some text here");
            drag = new QDrag(this);
            drag->setMimeData(mimeData);
            drag->setPixmap(pixmap);
            drag->exec(Qt::MoveAction);

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But I still don't get it!