[Lazarus] Bug form containing frame inheritance

[Mattias Gaertner]

On Thu, 7 May 2009 23:16:34 +0700
Bambang P <bpranoto at gmail.com> wrote:

> Hello,
> 
> I am just trying Lazarus and find a bug with form inheritance when the
> parent form contains frame.
> 
> Here is the step to produce it:
> 
> 1. Create a form Form1
> 2. Create a frame Frame1 contains a button
> 3. Place Frame1 onto Form1
> 4. Create form Form2 descended from Form1 through File -> New .. ->
> Inherited Items
> 5. Change something on Form2 like repositioning the frame.

Please create a bug report. So it won't be forgotten.

Mattias


> 
> Compile and run, when Form2 shows up an error message will be poped
> up: Project raised exception class "EComponentError" with message:
> Duplicate name: A Component named "Frame1_1" already exists.
> 
> The problem lies in the lfm file which generated as follows:
> 
> inherited Form2: TForm2
>   Left = 452
>   Top = 67
>   Caption = 'Form2'
>   inline Frame1_1: TFrame1 ==> HERE IS THE BUG
>     Left = 48
>     Top = 96
>     Visible = True
>     inherited Button1: TButton
>     end
>   end
> end
> 
> if I change "inline Frame1_1: TFrame1" to "inherited Frame1_1:
> TFrame1" everything goes well. However, there are still some problems:
> 
> 1. I can't display the .lfm file as Form, lazarus complains class
> TFrame1 is not found. Manually adding Frame1 to uses clause of
> unit2.pas solves the problem.
> 
> 2. As soon you change anything in Form2, the "inline Frame1_1:
> TFrame1" always comes back again.
> 
> I am using Lazarus 0.9.26.2 on Windows XP.
> 
> Is this a known bug?
> 
>