[Qt-interest] QGraphicsWidget Drag&Drop

[yifli at mtu.edu]

Hi folks,

I want to be able to drag around the 3D models displayed in a
QGraphicsView. Here's what I'm doing:

I use QGraphicsView to display a grid of 3D models(using OpenGL).

To do this, I add a QGraphicsWidget to QGraphicsScene so that the
QGraphicsWidget can hold my own QGraphicsLayout class

The QGraphicsLayout then holds my Viewer(derived from QGraphicsWidget),
which display a single 3D model.

I want to be able to drag a model in one Viewer to another.  Here's what I
have tried:

create QDrag object when mouse button is hold and moved

Viewer->setAcceptDrops(true) and reimplement Viewer::dragEnterEvent

However, Viewer::dragEnterEvent is never called.

Can someone point me in the right direction? Thanks

Yifei