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Steps:

1. Create a new class CExtEllipseShape that uses CFOEllipseShape2 as base class.

2. Create class CExtMeterShape that uses CFODrawPortsShape as base class.

3. Customize the ports of any shapes on the canvas:

void CNewVisualProxy::GenerateDefaultPorts(CArray<FOP_PortScale,FOP_PortScale>* mpSpot)
{
	mpSpot->RemoveAll();
	FOP_PortScale m_Scale;
	m_Scale.xScale = 0.5;
	m_Scale.yScale = 0.5;
	mpSpot->SetSize(1);
	mpSpot->SetAt(0,m_Scale);
}

4. Drawing custom shapes:

void CProcessSimulatorDemoView::OnDrawMymeter() 
{
	// TODO: Add your command handler code here
	m_drawshape = MY_METER;
	SetCurrentDrawingCursor(IDC_FO_DRAWRECT_CURSOR);
	m_action_state = State_DrawRect;
	m_bUpRightMode = FALSE;
}

void CProcessSimulatorDemoView::OnUpdateDrawMymeter(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	BOOL bDesign = GetCurrentModel()->IsDesignMode();
	pCmdUI->Enable(bDesign);
	if(bDesign)
	{
		pCmdUI->SetCheck(m_drawshape == MY_METER && (!m_bUpRightMode));
	}
}

void CProcessSimulatorDemoView::OnDrawMyellipse() 
{
	// TODO: Add your command handler code here
	m_drawshape = MY_ELLIPSE;
	SetCurrentDrawingCursor(IDC_FO_DRAWELLIPSE_CURSOR);
	m_action_state = State_DrawEllipse;
	m_bUpRightMode = FALSE;
}

void CProcessSimulatorDemoView::OnUpdateDrawMyellipse(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	BOOL bDesign = GetCurrentModel()->IsDesignMode();
	pCmdUI->Enable(bDesign);
	if(bDesign)
	{
		pCmdUI->SetCheck(m_drawshape == MY_ELLIPSE && (!m_bUpRightMode));
	}
}