The Wiert Corner – I always seem to forget the solution for the error messages about DsgnIntf or DesignIntf.dcu not found when porting old (D# projects) to new (D####) projects. Googling for this always gets a few false hits at the top, so for my memory, here it is: DesignIntf used to be a supplied as a .DCU file, and was in the VCL## package. Since it was a .DCU file, you could use it in both run-time and design-time packages. It got replaced by these units: DesignConst, DesignEditors, DesignIntf, DesignMenus, DesignWindows These units are supplied in the DesignIde package (so add DesignIde.dcp (Delphi) or ...
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