QGraphicsScene - clone selected item by Alt+Move

[qtsoul]

Hi!
I want clone selected item at QGraphicsScene if user start moving item with pressed Alt.
I wrote this code:

if(mouseEvent->modifiers() == Qt::AltModifier)
{
	QList<QGraphicsItem *> itList = this->selectedItems();
	if(itList.size()==1)
	{
		DiagramElement *de = (DiagramElement*)itList[0];
		DiagramElement *declone = de->clone();
 
		de->setSelected(false);
 
		declone->setPos(mouseEvent->scenePos());
		this->addItem(declone);
 
		declone->setSelected(true);
	}
	QGraphicsScene::mouseMoveEvent(mouseEvent);
}

if(mouseEvent->modifiers() == Qt::AltModifier)
{
	QList<QGraphicsItem *> itList = this->selectedItems();
	if(itList.size()==1)
	{
		DiagramElement *de = (DiagramElement*)itList[0];
		DiagramElement *declone = de->clone();

		de->setSelected(false);
		
		declone->setPos(mouseEvent->scenePos());
		this->addItem(declone);

		declone->setSelected(true);
	}
	QGraphicsScene::mouseMoveEvent(mouseEvent);
}

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This code is in class-child of QGraphicsScene. DiagramElement is child of QGraphicsItem.
After cloning old and new items are selected and moving together.
Old item is to stay in place and not be selected.

[Lykurg]

Hi,

first just a note: avoid old c style casts. As to your problem (without testing), try to call QGraphicsScene::clearSelection() and then select the cloned item.

[qtsoul]

Thanks! I solved this problem wits methogs grabMouse() and ungrabMouse().