Exception EReadError

[Mark Billig 0]

I have an application where if I rename or remove a component (SpinEdit) I get an error on run.

 

Exception EReadError in module PingFrames.exe at 000BF9E7.  Ancestor for 'SpinEdit' not found.

 

The source code can be found at: https://github.com/mbillig02/PingFrames

 

Thanks for any help.

[Dave Nottage 624]

11 minutes ago, Mark Billig said:

I have an application where if I rename or remove a component (SpinEdit) I get an error on run.

You have several TSpinEdit components in that application. Which one(s) are you renaming?

[Mark Billig 0]

The one named just 'SpinEdit'.  It is in PingFrameUnit.pas

[aehimself 404]

Did you use the Delphi IDE to rename or remove the component?

For a component to be streamed properly you need 3 things (4 if counting the obvious):

- Component descriptor in .pas (MyComponent: TSpinEdit)

- Unit in Uses list, before the component (usually Interface)

- Component descriptor in .dfm (MyComponent: object/inherited MyComponent: TSpinEdit)

These have to exist in your frame and all of it's ancestors.

 

When I had this error, it was usually one of the above.

[Mark Billig 0]

I found the issue in PFUnit.dfm  ( I did use the IDE to remove / refactor the component )

 

I think it is left over from earlier abandoned design.  I will need to take a close look and clean it up.

 

Thank you for your suggestions.