How do I use or resolve issues with visual form inheritance in Delphi?

Question

I\'ve been working on a project in Delphi 7 where I wanted to have forms inherit components from other forms. I was able to get this working, but came across the following issue

Answer 1

The DPR seems a little bit trickier than that. In my case, I created an ancestor derived from TFrame. I then derived multiple frames from TAncestorFrame. My DPR's uses clause then looked like:

uses
  Forms,
  ancestorFrame in 'ancestorFrame.pas' {AncestorFrame : TFrame},
  frame1Unit in 'frame1Unit.pas' {frame1:TFrame},
  frame2Unit in 'frame2Unit .pas' {frame2:TFrame},

The DPROJ file should look like:

  
frame1
  TFrame

Derived Frames should look like:

TFrame1 = class(TAncestorFrame)

And Derived Frames .DFM files should say:

inherited Frame1:TFrame1