SendMessageToDescendents problem

Another noob question...

I need to pass a message from a main frame window to one of its
children...the child is created with

    dlg = new Window();
    dlg->Create(IDD_TABHOLDER,this);
    dlg->ShowWindow(SW_SHOW);

within the main frame. Then the message is sent:

    SendMessageToDescendants(OECM_MESSAGE,0,0,true);

In the child dialog class, I do the following:

BOOL ViewConnections::PreTranslateMessage(MSG* pMsg)
{
    // TODO: Add your specialized code here and/or call the base class

    CString msg;
    CTime theTime = CTime::GetCurrentTime(); //the current time

    switch (pMsg->message)
    {
        case OECM_MESSAGE:
            msg.Format("{%02d:%02d:%02d} SubSkillsNet Connection
Established",theTime.GetHour(),
theTime.GetMinute(),theTime.GetSecond());
            listbox.AddString(msg);
            UpdateData(false);
            break;
            default:

            break;
    }

    return CDialog::PreTranslateMessage(pMsg);
}

But the child dialog never receives the message...this was confirmed
with a print statement inside the first case of the switch
statement....Any ideas here?

Thank you!
-Matt