Hi,
I think you are refering to the example containing the dialog "Combining Dialog Boxes" and the section
void CDialog2aDlg::OnLButtonDblClk(UINT nFlags, CPoint point)
{
CSecondDlg Dlg;
Dlg.DoModal();
CDialog::OnLButtonDblClk(nFlags, point);
}
If it is, then the following may be the solution,
Include
ON_WM_LBUTTONDBLCLK()
in Message map, like this
BEGIN_MESSAGE_MAP(CDialog2aDlg, CDialog)
ON_WM_LBUTTONDBLCLK()
END_MESSAGE_MAP()