Drag and drop tree widget item into graphicsview

mit_cruze

Hello, This is my simple code to drag tree-widget item. I have graphics-view in same window.
I want to drop item into graphicsview.
Heres my code to drag tree widget item.

void SimplePlayer::dragEnterEvent(QDragEnterEvent *event)         //should be for graphicsview
{
    qDebug()<<"dragEnterEvent";
    if (event->mimeData()->hasFormat("application/x-dnditemdata"))
    {
        if (event->source() == this)
        {
            event->setDropAction(Qt::MoveAction);
            event->accept();
        }
        else
        {
            event->acceptProposedAction();
        }
    }
    else
    {
        event->ignore();
    }

}

I am new to drag and drop. Which events are compulsory to implement?
How do I convert tree-widget item data to turn widget after dropping into graphics-view?

m.sue

Hi,
I usually implement:

void dragEnterEvent(QDragEnterEvent *event)
void dragMoveEvent(QDragMoveEvent *event)
void dropEvent(QDropEvent *event)

In the latter you will create the GraphicsView widget item according to information that you provide at the drag source: e.g. you can serialize the essential parameters of tree-widget item into a bytearray and in the dragEvent de-serialize it and use it to create a corresponding GraphicsView widget item. Nothing of this happens automatically.

Michael.

mit_cruze

@m.sue thanks for the hint