绘图基础--多边形2

 

// polygon2.cpp#include 
    
     // Define the application classclass CApp : public CWinApp{public:	virtual BOOL InitInstance();};CApp App;  // define the window classclass CWindow : public CFrameWnd{ public:	CWindow(); 	void OnPaint();	DECLARE_MESSAGE_MAP()};// The window's constructorCWindow::CWindow(){ 	Create(NULL, "Drawing Tests",		WS_OVERLAPPEDWINDOW,		CRect(0,0,350,300)); }// The message mapBEGIN_MESSAGE_MAP( CWindow, CFrameWnd )	ON_WM_PAINT()	END_MESSAGE_MAP()// Handle exposurevoid CWindow::OnPaint(){	CPaintDC dc(this);		// Change the pen and the brush	CPen pen(PS_SOLID, 2, RGB(0,0,255)), *oldPen;	CBrush brush(RGB(255,0,0)), *oldBrush;	oldPen = dc.SelectObject(&pen);	oldBrush = dc.SelectObject(&brush);		// Create the polygon	CPoint a[10];	a[0] = CPoint(100,100);		a[1] = CPoint(250,100);	a[2] = CPoint(110,180); 	a[3] = CPoint(180,30);	a[4] = CPoint(260,180);    	dc.SetPolyFillMode(ALTERNATE);	dc.Polygon(a, 5);		// return old pen and brush	dc.SelectObject(oldPen);	dc.SelectObject(oldBrush);}// Init the applicationBOOL CApp::InitInstance(){	m_pMainWnd = new CWindow();	m_pMainWnd->ShowWindow(m_nCmdShow);	m_pMainWnd->UpdateWindow();	return TRUE;}