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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Delphi: OldCreateOrder in inherited TDataModule might suddenly become True

Posted by jpluimers on 2020/04/08

Interesting observation that might have been in Delphi for more than a decade: [WayBack] Found something strange in Delphi again which I’ve been trying to fix for days until I discovered it’s probably a Delphi issue… – Stefaan Lesage – Google+.

I think the summary is that if you have inherited TDataModule instances, then the descendant will always have OldCreateOrder set to True.

It is reported as RAD StudioRSP-20016 TDatamodule.OldCreateOrder always resets to true on descendants, but it is present in at least Delphi 7, so likely is in the old QC database:

Uwe Raabe:
I can track this error down to Delphi 7 (really)! Cannot check Delphi 6, but Delphi 5 just doesn’t have that property.
The reason lies in TDataModule.ReadState where

FOldCreateOrder := not ModuleIsCPP;
is set.

These might be related:

–jeroen

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