>you could achieve the same behaviour my putting this code intot he InteractiveChange, ProgrammaticChange and Refresh event. Unlike Assign methods, here you are not forced to change the value of the Value property.

Just as an aside, my little framework uses a Change object, that these methods delegate to. When the Change object perceives a (real) change in the control's value, it fires the control's Change method. That would make it quite easy to implement your suggestion.