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Report From: Delphi-BCB/IDE/Tool Palette [ Add a report in this area ]

Report #: 78135

Status: Closed

Invoking Visual Form Inheritance from Tool Palette raises Error

Project: Delphi

Build #: 14.0.3513.24210

Version: 14.0

Submitted By: Erwin Mouthaan

Report Type: Minor failure / Design problem

Date Reported: 9/27/2009 12:37:35 PM

Severity: Infrequently encountered problem

Last Updated: 3/20/2012 2:24:39 AM

Platform: All versions

Internal Tracking #: 273172

Resolution: Duplicate (Resolution Comments)

Resolved in Build: :

Duplicate of: None

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Description

In your project you have a form where you have changed the default name. Based on this form you want to create a new form through Visual Form Inheritance.

To use VFI go to the Tool Pallete, select the 'Delphi Projects | Inheritable Items' category.

You will not find the form you are looking for. You will find the form with the default name instead.

Double click on it raises error: Error Creating form: Ancestor for 'TForm1' not found.

Related to QC 32042 and QC 67256.

Steps to Reproduce:

Select 'File | New | VCL Forms Application - Delphi'.

Change Name property of Form1 to frmBase.

Press F12 to activate the Code Editor.

On the Tool Pallete, select the 'Delphi Projects | Inheritable Items' category.

exp: frmBase
act: Form1

Double click on Form1 item raises error: Error Creating form: Ancestor for 'TForm1' not found.

Unit2.pas is added to project with undeclared identifier TForm1 instead of TfrmBase.

Workarounds

None

Attachment

None

Comments

Tomohiro Takahashi at 9/27/2009 8:52:59 PM -

When you change Name property of a Form, one possible workaround is
- save the project
- close and reopen the project
to refresh the tool palette item.

Erwin Mouthaan at 9/29/2009 4:23:55 AM -

If you know the issue then save, close and reopen the project is certainly a workaround. Rather cumbersome but it works. Or choose 'File | New | Other' to display the New Items dialog, and select 'Delphi Projects | Inheritable Items' to find there a frmBase item listed. The point is it is not there on the Tool Palette in the 'Delphi Projects | Inheritable Items' category. And it should be there.

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