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Do you mean you need to define a new geometric shape from the property grid, and assign it to ShapeNode.Shape?

Set the squares' Bounds property so that they are aligned to the respective node size. Use the AttachTo arguments to specify to which corner or side each square should ne anchored - this is useful only when the main node can be resized.

Stoyan

ShapeNodes lets you display an image and some text inside a geometric shape. Controls can be displayed using a different type - the DiagramNodeAdapter class, so you cannot replace the ShapeNode's Image with a control through a property grid. You could provide other means to do that, e.g. a context menu. You could either delete the ShapeNode and add your control at the same position, or leave the ShapeNode there, add the control and call the DiagramNodeAdapter's AttachTo method to attach the control to the shape.

Stoyan