Re: Exchanging the string data between two dailogs

From:

Rasheed <sk.rasheedfarhan@gmail.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 3 Dec 2010 03:36:11 -0800 (PST)

Message-ID:

<47172901-8184-4b7a-a4c9-41c6a5c901bf@d24g2000prj.googlegroups.com>

Hi Thanks to all them, it was a good start for me to under stand most
of things,

Hi Goran,
i have followed your approch, like below but i have got some error at
SetDlgItemText(),
class CFirst : public CDialog
{
  void SecondChanged(const CString& s)
{ SetDlgItemText(IDC_EDIT_FIRST, s); }

};

class CFirst;
class CSecond : public CDialog
{
  CSecond(CFirst& first) : m_first(f), CDialog(IDD) {}
  afx_msg void OnEnChangeEdit();
  CFirst& m_First;

};

BEGIN_MESSAGE_MAP(CSecond, CDialog)
  ON_EN_CHANGE(IDC_EDIT_SECOND, &CSecond::OnEnChangeEdit)
END_MESSAGE_MAP()

void CSecond::OnEnChangeEdit()
{
  CString s;
  GetDlgItemText(IDC_EDIT_SECOND, s);
  m_first.SecondChanged(s)
}

becuase in the SetDlgItemText() function internally check for the
IsWindow(m_hWnd) which has a 0(NULL) value and its throwing a
exception. how come i will override this problem. Kindly help me.
ENSURE(this);
    ENSURE(::IsWindow(m_hWnd) || (m_pCtrlSite != NULL));

i was tried to get the window handle of the FirstDialog but it also
hold the null value,
as Joseph said when i displied the Second dialog, first dailog doent
know any thing about the firstdailog. thats why when we are calling
the m_first.SecondChanged(s) function First Dialog doesnt know about
this and has Null m_hWnd.

Kindly help me out to resolve this problem.

Thanks,
Rs.