Moving Blocks and Connections

At present, both blocks and simple connections may be drawn on the palette but they cannot be interactively moved by the user or connected together to form a system model. Here, an object of the CRectTracker class is instantiated and used to move a diagram item [1]. The topics presented include the moving of blocks and connection-based head, tail, and bend points, the snapping and unsnapping of connection end points to and from block ports, inserting and deleting connectionbased bend points, and the deletion of whole connection objects.