send varibale value to parent

Two ways

Child Dialog gets apointer to the parent
or
Parent calls function in the Child Dialog

class CMyDialog :
{
  CString m_csData;
  CDialog m_pParent;
 
  SetParent ( CDialog* pParent ) { m_pParent = pParent; }

  OnSend ( ..   // IDC_SEND Button
  {
     myEdit.GetWindowText( csData );
     if ( m_pParent ) // Either do this directly
        m_pParent->id_latlon = csData; //better to have function
  }

   GetData () { return m_csData; }
};


  CParentDlg parentDlg;

  CMyDialog myDlg;
  myDlg->SetParent ( &parentDlg );
  myDlg.DoModal ();

  or

  CParentDlg parentDlg;

  CMyDialog myDlg;
  myDlg.DoModal ();

  parentDlg->id_latlon = myDlg->GetData ()

 

cant figure out how to do it, could you help me more

my main dialog is created in this id

CScrollBitmapDlg::CScrollBitmapDlg
and the popup dialog is created in

CCalibrate::CCalibrate(CWnd* pParent /*=NULL*/)
     : CDialog(CCalibrate::IDD, pParent)

where should i insert the code to get it to work, i am having a hard time figuring out how. :(

this is my OnSend

void CCalibrate::OnSend()
{
this is to execute to send data to parent dialog CScrollBitmapDlg::CScrollBitmapDlg
     
}