Re: Deriving from a class derived from a CDialog

From:

Oliver Regenfelder <oliver.regenfelder@gmx.at>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 23 Jun 2010 13:08:21 +0200

Message-ID:

<c118$4c21eb27$54774ba2$5193@news.inode.at>

Hello,

Joseph M. Newcomer wrote:

See my essay on this topic on my MVP Tips site. It applies to deriving from CDialog,
CFormView, and CPropertyPage. I use it all the time; I even go back and read my own essay
when I need to do it, to remind me of all the details.

Are you refering to this essay: "Subclassing Dialogs and Property Pages" ?

Because I think I already do the passing of the resource ID.
Here is the original code of the CTab class.

class MyTabCtrl :: public CTabCtrl
{
    class CTab : public CDialog
    {
    public:
        explicit CTab(LPCTSTR lpszTemplateName, CWnd* pParentWnd = NULL)
            : CDialog(lpszTemplateName, pParentWnd)
        {};

        explicit CTab(UINT nIDTemplate, CWnd* pParentWnd = NULL)
            : CDialog(nIDTemplate, pParentWnd)
        {};

        CTab() : CDialog()
        {};

        virtual void TabSelected()
        {}
        virtual void TabDeselected()
        {}
    };
};

Now I make my tabs like

class CTabEPC : public CMyTabCtrl::CTab
{

}

and the constructor is

CTabEPC::CTabEPC(CWnd* pParent /*=NULL*/)
    : CMyTabCtrl::CTab(CTabEPC::IDD, pParent)
    , [variable initialization]
{
    //{{AFX_DATA_INIT(CTabEPC)
    //}}AFX_DATA_INIT
}

So this should essentially be what your essay suggests. But the problem persists that
visual studio 2008 looses its ability to add event handlers to the CTabEPC class.

I select a control in the resource editor and then start the 'add event handler wizard'.
Anytime I select one of the CMyTabCtrl::CTab derived classes the wizard will not present
any events for selection. Whereas when I select a directly CDialog derived class it works
fine.

So how do I get the functionallity of the event handler wizard back?

Note: a "tab" control uses "tabs". I do not know what a "tabulator control" is, but a
"tabulator" was an early computing device that used punched cards and was programmed with
a wired control panel.

I meant the tab-control.

Best regards,

Oliver