I've added a custom toolbox shape using information from this thread. http://www.telerik.com/forums/how-to-custom-a-diagramtoolbox-item
But in my toolbox, the Key value is displayed as the label way below the actual shape. See toolbox.jpg. It must be to do with the bounds, but how do I set them?
In my override of ElementShape.CreatePath, where do the values for bounds come from? (see bounds.jpg).