Delphi: OldCreateOrder in inherited TDataModule might suddenly become True

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:

• [WayBack] QualityCentral: Report #: 2127 Status: Closed Right and bottom anchors don’t always work
• [WayBack] QualityCentral: Report #: 6074 Status: Reported BeforeStreaming/AfterStreaming methods

–jeroen