void CCoolComboDlg::OnDropdownCombo()
{

	// prevent drop down of the combo
	m_CoolCombo.ShowDropDown(FALSE);

	// Display our own popdown window instead
	DisplayPopdownWindow();
}

void CCoolComboDlg::DisplayPopdownWindow()
{
	//Get the combo's alignment
	CRect rectCombo;
	m_CoolCombo.GetWindowRect(&rectCombo);

	//if window is already present delete it
	if(m_pWndPopDown) delete m_pWndPopDown;

	///Register class and create window
	LPCTSTR lpszClass = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW);
	m_pWndPopDown = new CPopDownWnd();
	m_pWndPopDown->CreateEx(WS_EX_TOPMOST | WS_EX_TOOLWINDOW|WS_EX_PALETTEWINDOW
	                        lpszClass,
	                        _T(""),
	                        WS_POPUP | WS_VISIBLE,
	                        rectCombo.left,rectCombo.bottom,
	                        rectCombo.Width(),200,
	                        m_CoolCombo.GetSafeHwnd(),
	                        NULL,
	                        NULL);
}

UINT CCoolComboDlg::OnNcHitTest(CPoint point)
{
	// TODO: Add your message handler code here and/or call default

	UINT nHitTest =  CDialog::OnNcHitTest(point);
	//HTCAPTION  implies user clicked on the title bar , so return HTNOWHERE
	return (nHitTest == HTCAPTION) ? HTNOWHERE : nHitTest;
}