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Steps:

1. Load a flow chart file at running time:

// Dispatch commands specified on the command line
	if (cmdInfo.m_nShellCommand == CCommandLineInfo::FileNew)
	{
		CString strPathX = AfxGetApp()->m_pszHelpFilePath;
		strPathX = strPathX.Left(strPathX.ReverseFind('\\'));
		CString strOtherFile;
		strOtherFile = strPathX+_T("\\flow.udn");
		this->OpenDocumentFile(strOtherFile);
	}
	else if (!ProcessShellCommand(cmdInfo))
	{
		return FALSE;
	}

2. Change the setting of canvas:

void CUDesignerView::DoChangeModel(CFODataModel * pModel)
{
	CSize szCanvas = CSize(3000,3000);

	pModel->SetCanvasSize(szCanvas);
}

void CUDesignerView::OnInitialUpdate()
{
	SetCurrentModel(GetDocument()->m_pDataModel);
	CFODrawView::OnInitialUpdate();
	
	GetCurrentModel()->SetLockWithPages(FALSE);
	GetCurrentModel()->SetGridLineType(GRID_DOT);
	GetCurrentModel()->SetGridColor(RGB(0,0,0));
	CFOFormProperties *pProp = GetCurrentModel()->GetDefaultProperty();
	pProp->ShowMargin(FALSE);
	ShowRulers(FALSE);
//	GetCurrentModel()->SetAllowHoleLink(FALSE);
	UpdateScrollBarSize();
}

3. Change the default canvas origin offset with codes:

CSize CUDesignerView::GetCanvasOrginOffset() const
{				
//	if(m_pCurDataModel == NULL)
	{
		return CSize(0,0);
	}
}

4. Drawing shapes on the canvas:

void CUDesignerView::OnDrawFlobot() 
{
	// TODO: Add your command handler code here
	if(m_drawshape == FO_COMP_COMPOSITE && m_nCurShapeResID == IDR_FLOBOT)
	{
		m_action_state = State_SelectNone;
		m_drawshape = FO_COMP_NONE;
		FOSetSystemCursor(IDC_ARROW);
		return;
	}
	StartCustomShapeID(IDR_FLOBOT);
	AddShapePort(0.5,0.5);
}

void CUDesignerView::OnUpdateDrawFlobot(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	BOOL bDesign = GetCurrentModel()->IsDesignMode();
	pCmdUI->Enable(bDesign);

	pCmdUI->SetCheck(m_drawshape == FO_COMP_COMPOSITE && m_nCurShapeResID == IDR_FLOBOT);

}

5. Animate shapes that choosing:

void CUDesignerView::AnimateShapes()
{
	CExtDataModel *pModel = static_cast<CExtDataModel *>(GetCurrentModel());

	CFODrawShapeList m_UpdateList;
	POSITION pos = pModel->m_ShapesList.GetHeadPosition();
	CFODrawShape *pShape = NULL;
	while(pos != NULL)
	{
		pShape = (CFODrawShape *)pModel->m_ShapesList.GetNext(pos);
		BOOL bFlag = m_nTimerCount % 2;
		pShape->SetVisible(bFlag);

		if(HAS_BASE(pShape,CFOCompositeShape))
		{
			CFOCompositeShape *pGroup = static_cast<CFOCompositeShape *>(pShape);
			pGroup->SetGroupVisible(bFlag);
		}
		
		m_UpdateList.AddTail(pShape);
	}

	if(m_UpdateList.GetCount() > 0)
	{
		UpdateShapes(&m_UpdateList);
	}
}

void CUDesignerView::AnimateLinks()
{
	CExtDataModel *pModel = static_cast<CExtDataModel *>(GetCurrentModel());

	CFODrawShapeList m_UpdateList;
	POSITION pos = pModel->m_LinksList.GetHeadPosition();
	CFODrawShape *pShape = NULL;
	while(pos != NULL)
	{
		pShape = (CFODrawShape *)pModel->m_LinksList.GetNext(pos);
		BOOL bFlag = !(m_nTimerCount % 2);
		pShape->SetVisible(bFlag);

		m_UpdateList.AddTail(pShape);
	}

	if(m_UpdateList.GetCount() > 0)
	{
		UpdateShapes(&m_UpdateList);
	}
}

void CUDesignerView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	CExtDataModel *pModel = static_cast<CExtDataModel *>(GetCurrentModel());

	if (nIDEvent == COUNT_TIMER)
	{
		if (m_nTimerCount > 0)
		{
			if (pModel->m_ShapesList.GetCount() > 0)
			{
				AnimateShapes();
			}

			if (pModel->m_LinksList.GetCount() > 0)
			{
				AnimateLinks();
			}

			m_nTimerCount--;
		}
		else
		{
			KillTimer(COUNT_TIMER);

			if(pModel->m_LinksList.GetCount() > 0)
			{
				CFODrawShapeList m_UpdateList;
				
				POSITION pos = pModel->m_LinksList.GetHeadPosition();
				CFODrawShape *pShape = NULL;
				while(pos != NULL)
				{
					pShape = (CFODrawShape *)pModel->m_LinksList.GetNext(pos);
					pShape->SetVisible(TRUE);
					
					m_UpdateList.AddTail(pShape);
				}
				
				pModel->m_LinksList.RemoveAll();

				if(m_UpdateList.GetCount() > 0)
				{
					UpdateShapes(&m_UpdateList);
				}
			}

			if(pModel->m_ShapesList.GetCount() > 0)
			{
				CFODrawShapeList m_UpdateList;
				
				POSITION pos = pModel->m_ShapesList.GetHeadPosition();
				CFODrawShape *pShape = NULL;
				while(pos != NULL)
				{
					pShape = (CFODrawShape *)pModel->m_ShapesList.GetNext(pos);
					pShape->SetVisible(TRUE);
					if(HAS_BASE(pShape,CFOCompositeShape))
					{
						CFOCompositeShape *pGroup = static_cast<CFOCompositeShape *>(pShape);
						pGroup->SetGroupVisible(TRUE);
					}

					m_UpdateList.AddTail(pShape);
				}
				
				pModel->m_ShapesList.RemoveAll();

				if(m_UpdateList.GetCount() > 0)
				{
					UpdateShapes(&m_UpdateList);
				}
			}
			
			m_nTimerCount = 0;
		}
	}
	else
	{
		CFODrawView::OnTimer(nIDEvent);
	}
}

6. RelationShip between shapes:

void CUDesignerView::OnFindAllshapes() 
{
	CExtDataModel *pModel = static_cast<CExtDataModel *>(GetCurrentModel());

	// TODO: Add your command handler code here
	if( m_listSelectComp.GetCount() == 1)
	{
		CFODrawShape *pShape = GetCurrentSelectShape();
		if(HAS_BASE(pShape,CFODrawPortsShape))
		{
			CFODrawPortsShape *pPortsShape = static_cast<CFODrawPortsShape *>(pShape);
			pPortsShape->GetAllLinkShapes(pModel->m_ShapesList);

			m_nTimerCount = 10;
			SetTimer(COUNT_TIMER, 100, NULL);
		}
	}
}

void CUDesignerView::OnUpdateFindAllshapes(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	pCmdUI->Enable(m_listSelectComp.GetCount() == 1);
}

void CUDesignerView::OnFindAllshapesFrom() 
{
	// TODO: Add your command handler code here
	CExtDataModel *pModel = static_cast<CExtDataModel *>(GetCurrentModel());

	// TODO: Add your command handler code here
	if( m_listSelectComp.GetCount() == 1)
	{
		CFODrawShape *pShape = GetCurrentSelectShape();
		if(HAS_BASE(pShape,CFODrawPortsShape))
		{
			CFODrawPortsShape *pPortsShape = static_cast<CFODrawPortsShape *>(pShape);
			pPortsShape->GetAllLinkFromShapes(pModel->m_ShapesList);

			m_nTimerCount = 10;
			SetTimer(COUNT_TIMER, 100, NULL);
		}
	}
}

void CUDesignerView::OnUpdateFindAllshapesFrom(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	pCmdUI->Enable(m_listSelectComp.GetCount() == 1);
}