Unfortunately this is not currently possible because the right mouse button cannot be associated with a drawing action. I will see if we can modify the control to support this behavior through customization.

Regards,
Meppy

Get this version of the control:

https://mindfusion.eu/download/WpfDiagram.2.6a.trial.zip

The above version adds a new mouse button action for the right mouse button - Draw. By using the following code, you will enable interactive creation of nodes and links through the right mouse button:

diagram.RightButtonActions = MouseButtonActions.Draw; 

Now, in order to create new nodes on click (rather than on click & drag), you need to create a custom behavior class:

public class CustomBehavior : LinkShapesBehavior
{
      public CustomBehavior(Diagram view)
            : base(view)
      {
      }

      protected override void OnMouseDown(Point mousePosition, MouseButton mouseButton)
      {
            if (mouseButton == MouseButton.Right)
            {
                  var node = Diagram.GetNodeAt(mousePosition);
                  if (node == null)
                  {
                        Diagram.Factory.CreateShapeNode(mousePosition.X - 20, mousePosition.Y - 20, 40, 40);
                        Diagram.CancelDrag();
                  }
            }

            base.OnMouseDown(mousePosition, mouseButton);
      }
} 

To use this behavior, assign an instance of this class to the Diagram.CustomBehavior:

diagram.CustomBehavior = new CustomBehavior(diagram); 

Now, new nodes should be created through right-clicking and links should be created through right-clicking and dragging. Note, that the size of the newly created nodes is hardcoded in the CustomBehavior.OnMouseDown method above.

Regards,
Meppy

All suggestions are welcome. Send them along with any additional questions you might have to support@mindfusion.eu.

Regards,
Meppy