drawgraphview.cpp

周立功WinCE光盘资料

// DrawGraphView.cpp : implementation of the CDrawGraphView class
//

#include "stdafx.h"
#include "DrawGraph.h"

#include "DrawGraphDoc.h"
#include "DrawGraphView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CDrawGraphView

IMPLEMENT_DYNCREATE(CDrawGraphView, CView)

BEGIN_MESSAGE_MAP(CDrawGraphView, CView)
	//{{AFX_MSG_MAP(CDrawGraphView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDrawGraphView construction/destruction

CDrawGraphView::CDrawGraphView()
{
	// TODO: add construction code here

}

CDrawGraphView::~CDrawGraphView()
{
}

BOOL CDrawGraphView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CDrawGraphView drawing

void CDrawGraphView::OnDraw(CDC* pDC)
{
	CDrawGraphDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	// TODO: add draw code for native data here
	CRect crect;
	CPen *pOldPen;
	CPen *pMyPen = new CPen();
	int MaxX;
	int MaxY;
	GetClientRect(&crect);				//得到窗口区域
	MaxX=crect.Width ();
	MaxY=crect.Height ();
	//创建新画笔
	pMyPen->CreatePen (PS_SOLID,1,RGB(0,0,0));
	pOldPen = pDC->SelectObject (pMyPen);
	pDC->MoveTo (0,MaxY/2);	//设置绘线点为水平
	pDC->LineTo (MaxX,MaxY/2);//画一条水平线
	pDC->MoveTo (MaxX/2,0);
	pDC->LineTo (MaxX/2,MaxY);//画一条中垂线
	
	CBrush *pOldBrush;					//保存系统原有画刷

	CBrush brushGreen(RGB(0,255,0));	//创建一个绿色画刷
	pOldBrush=pDC->SelectObject (&brushGreen);//选择绿色画刷	
	crect.SetRect (0,0,MaxX/2,MaxY/2);	//设置绘图区
	crect.DeflateRect (30,30);			//将绘图区缩小30个像素
	pDC->Rectangle (crect);				//画矩形
	pDC->ExtTextOut (MaxX/4,MaxY/4,ETO_CLIPPED,NULL,"Green Rectangle",NULL);//输出说明性文字

	CBrush brushRed(RGB(255,0,0));		//创建一个红色画刷
	pOldBrush=pDC->SelectObject (&brushRed);//选择红色画刷	
	crect.SetRect (MaxX/2,0,MaxX,MaxY/2);		//设置绘图区
	crect.DeflateRect (30,30);			//将绘图区缩小30个像素
	pDC->Ellipse (crect);				//画椭圆
	pDC->ExtTextOut (MaxX*3/4,MaxY/4,ETO_CLIPPED,NULL,"Red ellipse",NULL);//输出说明性文字

	CBrush brushYello(RGB(255,255,0));	//创建一个黄色画刷
	pOldBrush=pDC->SelectObject (&brushYello);//选择黄色画刷	
	crect.SetRect (0,MaxY/2,MaxX/2,MaxY);		//设置绘图区
	crect.DeflateRect (30,30);			//将绘图区缩小30个像素
	pDC->RoundRect (crect,CPoint(50,50));//绘制圆角矩形
	pDC->ExtTextOut (MaxX/4,MaxY*3/4,ETO_CLIPPED,NULL,"Yello RoundRect",NULL);//输出说明性文字

	CBrush brushOrchid(RGB(0,0,255));	//创建一个兰色画刷
	CPoint pts[4];
	pOldBrush=pDC->SelectObject (&brushOrchid);//选择兰色画刷	
	crect.SetRect (MaxX/2,MaxY/2,MaxX,MaxY);		//设置绘图区
	crect.DeflateRect (30,30);			//将绘图区缩小30个像素
	pts[0].x = crect.left +crect.Width ()/2;//设置多边形的四个点
	pts[0].y = crect.top ;
	pts[1].x = crect.right ;
	pts[1].y = crect.top + crect.Height ()/2;
	pts[2].x = pts[0].x ;
	pts[2].y = crect.bottom ;
	pts[3].x = crect.left ;
	pts[3].y = pts[1].y ;
	pDC->Polygon (pts,4);			//绘制多边形
	pDC->ExtTextOut (MaxX*3/4,MaxY*3/4,ETO_CLIPPED,NULL,"Orchid Polygon",NULL);//输出说明性文字

	//恢复系统原有的画刷
	pDC->SelectObject (pOldBrush);
}

/////////////////////////////////////////////////////////////////////////////
// CDrawGraphView diagnostics

#ifdef _DEBUG
void CDrawGraphView::AssertValid() const
{
	CView::AssertValid();
}

void CDrawGraphView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CDrawGraphDoc* CDrawGraphView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawGraphDoc)));
	return (CDrawGraphDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CDrawGraphView message handlers