[lazarus] Shane's Self Problem detected!

[Shane Miller]

What line is it crashing on?  What's after the IN OPENFILE in your source?

Shane


>>> Payne Thomas E CNIN <payne_t at crane.navy.mil> 05/13 10:32 AM >>>
Shane,

I am working off of both as of this morning.  I just figured out that I can
checkout lazarus from the FPC CVS server.
My comments are from the .zip file on cliff's web page.

The .zip version has unitlist and ActivePage in global.pp.  I found the
commented out line you referenced and uncommented it.

This time I get an unhandled exception after 'In OPENFILE' (not 'Creating
the MEmo');

Tom

btw: I have not updated FPC since yesterday (via CVS).

> -----Original Message-----
> From:	Shane Miller [SMTP:SMiller1 at stvgb.org] 
> Sent:	Thursday, May 13, 1999 10:10 AM
> To:	lazarus at miraclec.com 
> Subject:	Re: RE: [lazarus] Shane's Self Problem detected!
> 
> Payne,
> I'm not sure what code your working off, so this may not work.
> 
> Make sure that your global.pp file has a reference to unitlist and
> ActivePage.  If so this will work.  
> The reason it crashes is because fmEditor does not contain anything so
> assigning the Memo1's parent to fmeditor crashes.  What I did was add a
> local variable called fmeditor in the OPENFILE procedure and assign it to
> TEditor(UnitList.Objects[ActivePage]);
> 
> Then, fmeditor is assigned to something.
> Try that and let me know if it works.
> Shane
> 
> 
> >>> Payne Thomas E CNIN <payne_t at crane.navy.mil> 05/13 9:43 AM >>>
> Problem:  Lazarus halt with an unhandled exception after choosing a file
> from FILE OPEN pulldown menu dialog box reference (lazarus/editor.pp line
> 278 'Memo1 := TMemo.Create(fmEditor);' )
> 
> Possible Cause:  Object TMemo's create method is the constructor and
> should
> pass a pointer back to Memo1 variable, but... the vmtSelfPtr is not
> implemented in FPC (reference rtl/objpas/objpas.pp line 27 '//vmtSelfPtr =
> -36; {not implemented yet})
> 
> Background:
> I have not tested this theory, but it seems right.  Object Pascal
> liturature
> states that you can send an app into the 'wild blue yonder' by using an
> object's method without calling the constructor to intialize the link to
> the
> virtual method table of the object. The editor problem seems related to
> tha
> t, even though you are calling the constructor.
> 
> Solution:
> It beyond my capability to suggest one.
> 
> Tom
> 
> > -----Original Message-----
> > From:	Cliff.Baeseman at Greenheck.com 
> [SMTP:Cliff.Baeseman at Greenheck.com] 
> > Sent:	Thursday, May 13, 1999 8:58 AM
> > To:	lazarus at miraclec.com 
> > Subject:	[lazarus] Shane's Self Problem detected!
> > 
> > Shane.
> >    Tom sent me a mail message that said we should look at the objpas
> unit
> > something about self being commented out where it should
> > be pointing to a memory table....
> > 
> > 
> > Cliff
> > 
> > - "If you kiss me, I'll turn into a beautiful princess."
> > - "Look, I'm a computer programmer. I don't have time for girls,
> > but a talking frog is very very cool."
> > 
> > 
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