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主要代码
// DrawFrogView.cpp : implementation of the CDrawFrogView class
//
#include "stdafx.h"
#include "DrawFrog.h"
#include "DrawFrogDoc.h"
#include "DrawFrogView.h"
#include "math.h"
#define PI 3.14
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/
// CDrawFrogView
IMPLEMENT_DYNCREATE(CDrawFrogView, CView)
BEGIN_MESSAGE_MAP(CDrawFrogView, CView)
//{{AFX_MSG_MAP(CDrawFrogView)
// 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
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()
/
// CDrawFrogView construction/destruction
CDrawFrogView::CDrawFrogView()
{
// TODO: add construction code here
}
CDrawFrogView::~CDrawFrogView()
{
}
BOOL CDrawFrogView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CView::PreCreateWindow(cs);
}
/
// CDrawFrogView drawing
void CDrawFrogView::OnDraw(CDC* pDC)
{
CDrawFrogDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
RedFlag();
Flagpole(400,100,405,500);
Flagpole(900,100,905,500);
//五角星的五个点位置
FiveStar(375,125,15,PI/2);
FiveStar(350,110,5,-atan(3/5));
FiveStar(340,120,5,-atan(1/7));
FiveStar(340,135,5,-atan(2/7));
FiveStar(350,145,5,-atan(4/5));
//绘制绿色的青蛙
GreenFrog();
//奥运五环
Olinpinic();
}
/
// CDrawFrogView printing
BOOL CDrawFrogView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CDrawFrogView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CDrawFrogView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/
// CDrawFrogView diagnostics
#ifdef _DEBUG
void CDrawFrogView::AssertValid() const
{
CView::AssertValid();
}
void CDrawFrogView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CDrawFrogDoc* CDrawFrogView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawFrogDoc)));
return (CDrawFrogDoc*)m_pDocument;
}
#endif //_DEBUG
/
// CDrawFrogView message handlers
void CDrawFrogView::RedFlag()
{
CDC *pDC = GetDC();
CPen penRed(PS_SOLID,1,RGB(255,0,0));//创建一个红色画笔
CPen *pOldPen = pDC->SelectObject(&penRed);//简画笔与DC关联
CBrush brushYellow(RGB(255,0,0));//黄色画刷
CBrush *pOldBrush = pDC->SelectObject(&brushYellow);//与DC关联
pDC->SetPolyFillMode(WINDING);//多边形填充颜色
POINT pts[4] = {{250,100},{400,100},{400,200},{250,200}};//绘制旗帜的大小,注意顺序
pDC->Polygon(pts,4);
pDC->SelectObject(pOldPen);//选定当前指定画笔
pDC->SelectObject(pOldBrush);//选中当前指定画刷
}
void CDrawFrogView::Flagpole(int x0, int y0, int x1, int y1)
{
CDC *pDC = GetDC();
CBrush brushBlack(RGB(0,0,0));
CBrush *OldBrush = pDC->SelectObject(&brushBlack);
pDC->Rectangle(x0,y0,x1,y1);
}
}
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