Re: Non-modal dialog pParent initialization (and warning C4355)

From:
"Doug Harrison [MVP]" <dsh@mvps.org>
Newsgroups:
microsoft.public.vc.mfc
Date:
Thu, 22 Mar 2007 10:14:59 -0500
Message-ID:
<v67503d7ib178hnn01qsj77q9iuu0v14u0@4ax.com>
On 22 Mar 2007 01:11:46 -0700, "Harvey" <harveyab@juno.com> wrote:

On Mar 21, 8:26 pm, "Doug Harrison [MVP]" <d...@mvps.org> wrote:

On 21 Mar 2007 13:44:26 -0700, "Harvey" <harve...@juno.com> wrote:

How did I change the signature? If I remember correctly (and typed it
correctly), this is the way the wizard wrote it. I only put the line
in the body. (But that was 11 days ago :-> ).


You tell me. :) I'm going by the documentation:

CDialog::Createhttp://msdn2.microsoft.com/en-us/library/yhth57kd(VS.80).aspx
<q>
virtual BOOL Create(
   LPCTSTR lpszTemplateName,
   CWnd* pParentWnd = NULL
);
virtual BOOL Create(
   UINT nIDTemplate,
   CWnd* pParentWnd = NULL
);
</q>

Did the wizard really create a new function in your derived class named
Create with signature:

BOOL CFooDlg::Create(CWnd * pParent)
{
  pCV=(CMyBar *) pParent;
}


Note also that it's bad to overload virtual functions as CDialog does with
Create, but this wasn't too evident 15 years ago when MFC was being
written. Just avoid doing it in new code.

--
Doug Harrison
Visual C++ MVP


Oh, now that I go actually look at the code... :)
Well, you are quite right.
I have this in several Dialogs, I obviously copied the bad code from
one class to another several times. Now I see that the signature is
not the same as even the base class that the function calls. So I
guess I better go fix them all :-)
Thanks for your help - it's much appreciated.
Harvey


You're welcome. In case it isn't clear, I said it's bad to overload virtual
functions because to get Create to do your thing no matter which overload
is called, you have to override all the overloads.

--
Doug Harrison
Visual C++ MVP

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