mygraphview.cpp

这个是我们学校用的VC++教案

// MyGraphView.cpp : implementation of the CMyGraphView class
//

#include "stdafx.h"
#include "MyGraph.h"

#include "MyGraphDoc.h"
#include "MyGraphView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyGraphView

IMPLEMENT_DYNCREATE(CMyGraphView, CView)

BEGIN_MESSAGE_MAP(CMyGraphView, CView)
	//{{AFX_MSG_MAP(CMyGraphView)
		// 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()

/////////////////////////////////////////////////////////////////////////////
// CMyGraphView construction/destruction

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

}

CMyGraphView::~CMyGraphView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMyGraphView drawing

void CMyGraphView::OnDraw(CDC* pDC)
{
	CMyGraphDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	CRect  rectClient;
	GetClientRect(rectClient);    // 得到用户区窗口
	pDC->SetMapMode(MM_ANISOTROPIC);  // 映射模式设置为MM_ANISOTROPIC
	pDC->SetWindowExt(800, 800);    // 定义逻辑窗口
	pDC->SetViewportExt(rectClient.right, -rectClient.bottom);    // 定义输出视口
	pDC->SetViewportOrg(rectClient.right/2, rectClient. bottom/2);   // 设置视口原点
	pDC->Ellipse(CRect(-200, -200, 200, 200));   // 在逻辑窗口绘圆
	pDC->SetMapMode(MM_ISOTROPIC);    // 映射模式设置为MM_ISOTROPIC
	pDC->SetWindowExt(800, 800);
	pDC->SetViewportExt(rectClient.right, -rectClient.bottom);
	pDC->SetViewportOrg(rectClient.right/2, rectClient. bottom/2);
	pDC->Ellipse(CRect(-200, -200, 200, 200));    // 在逻辑窗口绘圆
}

/////////////////////////////////////////////////////////////////////////////
// CMyGraphView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyGraphView message handlers