Hi,

I have successfully implemented "Attribute" class by sub classing "QGraphicsItem".
Drag n Drop between instances is working fine.
There are three things I would like to solve:

1. In dropEvent, how do you find out the source "Attribute" from which drag has started?
I am using this method, but as per the docs it won't work.
Qt Code: 
  1. void Attribute::dropEvent(QGraphicsSceneDragDropEvent *event)
  2. {
  3.    Attribute *attrib = qgraphicsitem_cast<Attribute *>(event->source());
  4.    ...
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2. As soon as drag starts I would like to draw a line from source attribute and current mouse position continuously. This is like setting up a dynamic pixmap for drag.

3. While dragging the cursor changed to Qt::ForbiddenCursor, until you are not hovering
on another "Attribute" instance. How do I hide this cursor while dragging?
In dragMoveEvent I tried setting up the cursor by using an empty pixmap but it's crashing the application
Qt Code: 
  1. QPixmap pixmap;
  2. drag->setDragCursor(pixmap, Qt::IgnoreAction);
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Cheers

Prahant