Hi Stoyan,

I noticed that in the Demo projects, some nodes in the diagram can be moved and deleted. But some nodes can not be moved and deleted.
I tried to write a prototype similar to drag and drop nodes to the diagram. But all the nodes created can not be moved and deleted.

Would you please tell me what kind of properties do I need to set to move and delete created nodes?

Thanks a lot!

I tried 2 ways.
1. Create a node with image + text
2. Just text
I think the Locked property is default to false.
Basically, I copy and paste the code from the demo project.

Thank you very much.


   void diagram_Drop(object sender, System.Windows.DragEventArgs e)
     {

        Point p = e.GetPosition(diagram);
        Point pt = diagram.ClientToDoc(p);

        if (e.Data.GetDataPresent(typeof(Image)))
        {
           Image i = (Image)e.Data.GetData(typeof(Image));
           ShapeNode b = diagram.Factory.CreateShapeNode(pt.X, pt.Y, 30, 30);
           b.Image = i.Source as BitmapSource;
           b.ResizeToFitImage();
           b.Transparent = true;
           ShapeNode bb = diagram.Factory.CreateShapeNode(
               pt.X - 10, pt.Y + b.Bounds.Height,
               b.Bounds.Width + 20, 5);
           bb.AttachTo(b, AttachToNode.BottomLeft);
           bb.Locked = false;
           bb.Transparent = true;
           bb.Text = "From image";
        }
        else if (e.Data.GetDataPresent(DataFormats.Text))
        {
           string s = (string)e.Data.GetData(DataFormats.Text);
           ShapeNode b = diagram.Factory.CreateShapeNode(pt.X, pt.Y, 30, 5);
           b.Text = s;
        }
    }

Please try that with the latest build of the control:
https://mindfusion.org/_beta/MindFusion.Diagramming.Wpf.zip

Does it work any better?

Thanks,
Stoyan

Hi Chris,

HandlesStyle == DashFrame reserves a couple of millimeters near the node borders for drawing links, and the rest of the node interior can be used for moving nodes. This does not work in your case because the shapes are too narrow and their whole area is reserved for drawing links. Check if decreasing the HandlesSize value fixes that. If it doesn't, use another HandlesStyle or create larger nodes.

For Del to work, the Diagram control must have the keyboard focus. Every time you drag from the list, the focus goes to the list control, so you must click the diagram again to move the focus there (or use TAB).

After attaching the text node, set b.SubordinateGroup.AutoDeleteItems = true to have both nodes deleted when you press Del.

I hope that helps,
Stoyan

Perhaps the event is raised for a second time if you do not set the DragEventArgs.Effects property?