Drop not working correctly

[rippa]

Hello! Im dragging from a QTreeWidget to QGraphicsScene. And drop action doesnt occur.

This code for drag:

void MyTreeWidget::mousePressEvent(QMouseEvent* event)
{
	if (event->button() == Qt::LeftButton)
		dragStartPosition = event->pos();
	QTreeWidget::mousePressEvent(event);
}
 
void MyTreeWidget::mouseMoveEvent(QMouseEvent* event)
{
	if (!(event->buttons() & Qt::LeftButton))
		return;
	if ((event->pos() - dragStartPosition).manhattanLength() < QApplication::startDragDistance())
		return;
	if(this->currentItem()->text(0) == QString::fromLocal8Bit("Text"))
	{
		QLabel* lb = new QLabel(QString::fromLocal8Bit("Text"));
		lb->setMaximumSize(100,20);
		lb->setAlignment(Qt::AlignVCenter|Qt::AlignHCenter);
		QDrag *drag = new QDrag(this);
		drag->setPixmap(QPixmap::grabWidget(lb));
		QMimeData *mimeData = new QMimeData;
		drag->setMimeData(mimeData);
		Qt::DropAction dropAction = drag->exec();
	}

void MyTreeWidget::mousePressEvent(QMouseEvent* event)
{
	if (event->button() == Qt::LeftButton)
		dragStartPosition = event->pos();
	QTreeWidget::mousePressEvent(event);
}

void MyTreeWidget::mouseMoveEvent(QMouseEvent* event)
{
	if (!(event->buttons() & Qt::LeftButton))
		return;
	if ((event->pos() - dragStartPosition).manhattanLength() < QApplication::startDragDistance())
		return;
	if(this->currentItem()->text(0) == QString::fromLocal8Bit("Text"))
	{
		QLabel* lb = new QLabel(QString::fromLocal8Bit("Text"));
		lb->setMaximumSize(100,20);
		lb->setAlignment(Qt::AlignVCenter|Qt::AlignHCenter);
		QDrag *drag = new QDrag(this);
		drag->setPixmap(QPixmap::grabWidget(lb));
		QMimeData *mimeData = new QMimeData;
		drag->setMimeData(mimeData);
		Qt::DropAction dropAction = drag->exec();
	}

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And this is for drop:

MyGraphicsView::MyGraphicsView(QGraphicsScene* parent) : QGraphicsView(parent)
{
	setAcceptDrops(true);
}
 
void MyGraphicsView::dragEnterEvent(QDragEnterEvent* e)
{
	cout << "drag entered" << endl;
	e->acceptProposedAction();
}
 
void MyGraphicsView::dropEvent(QDropEvent *e)
{
	cout << "dropped" << endl;
	e->acceptProposedAction();
}

MyGraphicsView::MyGraphicsView(QGraphicsScene* parent) : QGraphicsView(parent)
{
	setAcceptDrops(true);
}

void MyGraphicsView::dragEnterEvent(QDragEnterEvent* e)
{
	cout << "drag entered" << endl;
	e->acceptProposedAction();
}

void MyGraphicsView::dropEvent(QDropEvent *e)
{
	cout << "dropped" << endl;
	e->acceptProposedAction();
}

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dragEnterEvent works correctly (at least cout in it). But dropEvent doesnt. And drop accepted symbol (+) isnt shown over pixmap im dragging.

Help would be appreciated. Thanks in advance.