Delphi-PRAXiS - Preserve Internal State (/Window Handle) when Changing Parent or Style for an ActiveX

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29. Sep 2022 13:00

Preserve Internal State (/Window Handle) when Changing Parent or Style for an ActiveX

In any (VCL) Delphi application more stuff happens behind the scenes than you might be aware of. As known, every (TWinControl descendant) control placed on a form (like TButton or TEdit) and even the (T)Form itself is actually a wrapper for a Windows screen object. Every such object is “defined” by something called Window Handle. […]

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