Re: Overloaded constructor issues in MFC Dialogs

From:
Goran <goran.pusic@gmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Mon, 15 Feb 2010 23:26:48 -0800 (PST)
Message-ID:
<24a2edb6-9255-42c3-acfe-0ba9f8fa26e5@d27g2000yqn.googlegroups.com>
On Feb 15, 10:05 pm, Brad Gillespie <Brad
Gilles...@discussions.microsoft.com> wrote:

Thus far, I have been creating classes that have objects in the header fi=

le.

E.g., I might create a dialog box class, and in the *.h file for the dial=

og

box class, I have instantiated various objects, such as tab controls or l=

ist

controls, etc. So the dialog class =93has-a=94 list control, for insta=

nce.

However, I have run into a severe limitation. I can't use alternativ=

e

constructors (Overloaded Constructors) when doing this, because I can't
include any pass parameters when instantiating an object in the *.h file =

of

some other class.

Let me clarify. If I create a dialog class called DialogA, then in the=

 *.h

file for that class, I cannot instantiate a member object by passing
variables to the constructor of that object's class. That is, in the
DialogA.h file,

CMyListCtrl ListCtrlObj; //=

 I can say this

CMyListCtrl ListCtrlObj(123,'M'); // I can't say thi=

s

It looks like you are looking for this:

header:
class CMyDialog : public CDialog
{
public:
CMyDialog(CWnd* pParent, int listParam1, char ListParam2);
}

implementation (or inline):
CMyDialog::CMyDialog(CWnd* pParent, int listParam1, char listParam2) :
  CDialog(IDD, pParent), ListCtrlObj(listParam1, listParam2)
{}

Please don't take offense, but it also looks like you should not be
using MFC yet, you should instead learn more about the language
itself.

Goran.

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