ex_drawview.cpp

Visual C++应用教程-源代码 本书在复习C++基础知识后

// Ex_DrawView.cpp : implementation of the CEx_DrawView class
//

#include "stdafx.h"
#include "Ex_Draw.h"

#include "Ex_DrawDoc.h"
#include "Ex_DrawView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CEx_DrawView

IMPLEMENT_DYNCREATE(CEx_DrawView, CView)

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

/////////////////////////////////////////////////////////////////////////////
// CEx_DrawView construction/destruction

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

}

CEx_DrawView::~CEx_DrawView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CEx_DrawView drawing

void CEx_DrawView::OnDraw(CDC* pDC)
{
	CEx_DrawDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	CRect rectClient;
	GetClientRect(rectClient);		// 获得当前窗口的客户区大小
	pDC->SetMapMode(MM_ANISOTROPIC);	// 设置MM_ANISOTROPIC映射模式
	pDC->SetWindowExt(1000,1000);			// 设置窗口范围
	pDC->SetViewportExt(rectClient.right,-rectClient.bottom);	// 设置视口范围
	pDC->SetViewportOrg(rectClient.right/2,rectClient.bottom/2);	// 设置视口原点
	pDC->Ellipse(CRect(-500,-500,500,500));
}

/////////////////////////////////////////////////////////////////////////////
// CEx_DrawView printing

BOOL CEx_DrawView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CEx_DrawView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CEx_DrawView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CEx_DrawView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CEx_DrawView message handlers