Re: Realizing "confirm cancel" functionality with property sheets

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Mon, 24 Sep 2007 07:18:08 -0700

Message-ID:

<Ooa9IXr$HHA.4612@TK2MSFTNGP03.phx.gbl>

Hi Martin,

Try this,

Put in a handler message for cancel:

BEGIN_MESSAGE_MAP(CMySheet, CPropertySheet)
ON_COMMAND(IDCANCEL, OnCancel)
END_MESSAGE_MAP()

Then do the handler:

void CMySheet::OnCancel()
{
     if(AfxMessageBox("Do you want to cancel?",MB_YESNO) == IDYES) {
          //Any extra code you need
          EndModalLoop( IDCANCEL );
     }
}

Don't forget this in your .h file:

virtual void OnCancel();

You could do the same thing with IDOK if you wanted to check that too.

You can also use this to have one page communicate with the others (I.E., a
value changes or needs to be checked)

http://msdn2.microsoft.com/en-us/library/ykkkze85(VS.80).aspx

HTH,

Tom

"Martin" <martin-g@mail.ru> wrote in message
news:1190634828.579340.24370@r29g2000hsg.googlegroups.com...

Hi.

I have a property sheet in my application and need it to show a
confirmation message when user clicks 'Cancel' button, and there are
changes made on some property pages, something like "Do you want to
discard all changes?". The property sheet class itself doesn't have
'OnQueryCancel' method, nor it has 'OnCancel' handler - everything is
in CPropertyPage. If it had, I'd somehow check if any pages were
changed. But now I can't find an elegant method to implement this.
Have you any ideas?

Thanks,
Martin