As noted by others, there are several problems with changing the parent window of a control without changing the ownership, and changing a controls owner can be difficult if it has multiple controls sitting on it...
One way around it is to use a frame instead. A frame owns all of it's sub-controls, so all you would need to do is change the owner and parent of the frame, and everything else will come along with it. This approach also allows you to keep all the event handlers and glue code in a single place as well.
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