Re: Exchanging the string data between two dailogs

From:

Rasheed <sk.rasheedfarhan@gmail.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 3 Dec 2010 03:42:31 -0800 (PST)

Message-ID:

<69aa199d-0a43-4200-92a1-57049f384949@r16g2000prh.googlegroups.com>

Hi Thanks to all of you, it was a good start for me to understand
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 in our case that's why its
thowing a exception. how can i override this problem. Kindly help
me.
Bleow is the part of the code of SetDlgItemText()
void CWnd::SetWindowText(LPCTSTR lpszString)
{

ENSURE(this);
        ENSURE(::IsWindow(m_hWnd) || (m_pCtrlSite != NULL));
=85=85
=85=85.
}
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.