txx4_9view.h

给定四个点绘制图4-30所示的不同转角的两个正方形

// txx4_9View.h : interface of the CTxx4_9View class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_TXX4_9VIEW_H__19B587BA_2346_48B2_917F_7870B0FAB4D1__INCLUDED_)
#define AFX_TXX4_9VIEW_H__19B587BA_2346_48B2_917F_7870B0FAB4D1__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000


class CTxx4_9View : public CView
{
protected: // create from serialization only
	CTxx4_9View();
	DECLARE_DYNCREATE(CTxx4_9View)

// Attributes
public:
	CTxx4_9Doc* GetDocument();
	COLORREF BkColor;
	stack<CPoint> stk;
	void DrawEdge(CDC *pDC, list<CPoint> &polygon, int color);
	bool IsInside(CPoint point);
// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CTxx4_9View)
	public:
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	protected:
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
	virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);
	//}}AFX_VIRTUAL

// Implementation
public:	
	virtual ~CTxx4_9View();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CTxx4_9View)
	afx_msg void Onfill();
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

#ifndef _DEBUG  // debug version in txx4_9View.cpp
inline CTxx4_9Doc* CTxx4_9View::GetDocument()
   { return (CTxx4_9Doc*)m_pDocument; }
#endif

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_TXX4_9VIEW_H__19B587BA_2346_48B2_917F_7870B0FAB4D1__INCLUDED_)