A 2D Graph Component With Zoom Capability

// SmartGraphDemoView.h : interface of the CSmartGraphDemoView class
//


#pragma once
#include "SmartGraph.h"

enum CursorState { CURSOR_NORMAL, CURSOR_ZOOM_IN, CURSOR_ZOOM_OUT, CURSOR_HAND };

class CSmartGraphDemoView : public CFormView
{
protected: // create from serialization only
	CSmartGraphDemoView();
	DECLARE_DYNCREATE(CSmartGraphDemoView)

public:
	enum{ IDD = IDD_SMARTGRAPHDEMO_FORM };

// Attributes
public:
	CSmartGraphDemoDoc* GetDocument() const;

// Operations
public:

// Overrides
	public:
virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	virtual void OnInitialUpdate(); // called first time after construct

// Implementation
public:
	virtual ~CSmartGraphDemoView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:
	CRect m_rcSelRect;
	bool m_bFirstCall;
	int m_nSkipMove;
	bool m_bSkip;
	CBrush m_brSelection;
	void ZoomIn();
	void ZoomOut();
	HCURSOR m_hNormal, m_hZoomIn,m_hZoomOut,m_hHand;  
	CursorState 	m_nCursor;

// Generated message map functions
protected:
	DECLARE_MESSAGE_MAP()
public:
	afx_msg void OnZoomIn();
	afx_msg void OnZoomOut();
	afx_msg void OnZoomReset();
	CSmartGraph m_Graph;
	afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
	afx_msg void OnUpdateZoomIn(CCmdUI *pCmdUI);
	afx_msg void OnUpdateZoomOut(CCmdUI *pCmdUI);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	DECLARE_EVENTSINK_MAP()
	void LButtonDownSmartgraph1(long xPos, long yPos, LONGLONG wParam);
	void LButtonUpSmartgraph1(long xPos, long yPos, LONGLONG wParam);
	void MouseMoveSmartgraph1(long xPos, long yPos, LONGLONG wParam);
	afx_msg void OnFileOpen();
	afx_msg void OnGraphtypeDot();
	afx_msg void OnGraphtypeLine();
	afx_msg void OnGraphtypeBar();
	afx_msg void OnNcPaint();
};

#ifndef _DEBUG  // debug version in SmartGraphDemoView.cpp
inline CSmartGraphDemoDoc* CSmartGraphDemoView::GetDocument() const
   { return reinterpret_cast<CSmartGraphDemoDoc*>(m_pDocument); }
#endif