myview.cpp

来自「由吕军等人著的《Visual C++ 与面向对象程序设计教程》课后习题的源代码」· C++ 代码 · 共 202 行

// MyView.cpp : implementation of the CMyView class
//

#include "stdafx.h"
#include "My.h"

#include "MyDoc.h"
#include "MyView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyView

IMPLEMENT_DYNCREATE(CMyView, CView)

BEGIN_MESSAGE_MAP(CMyView, CView)
	//{{AFX_MSG_MAP(CMyView)
	ON_COMMAND(ID_END, OnEnd)
	ON_COMMAND(ID_START, OnStart)
	ON_COMMAND(ID_LOW, OnLow)
	ON_UPDATE_COMMAND_UI(ID_LOW, OnUpdateLow)
	ON_COMMAND(ID_MEDIUM, OnMedium)
	ON_UPDATE_COMMAND_UI(ID_MEDIUM, OnUpdateMedium)
	ON_COMMAND(ID_HIGH, OnHigh)
	ON_UPDATE_COMMAND_UI(ID_HIGH, OnUpdateHigh)
	ON_WM_TIMER()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMyView construction/destruction

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

}

CMyView::~CMyView()
{
}

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

	return CView::PreCreateWindow(cs);  
}

/////////////////////////////////////////////////////////////////////////////
// CMyView drawing

void CMyView::OnDraw(CDC* pDC)
{
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	pDC->Ellipse(pDoc->m_rectBody);
}

/////////////////////////////////////////////////////////////////////////////
// CMyView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyView message handlers

void CMyView::OnEnd() 
{
	// TODO: Add your command handler code here
	KillTimer(1);	
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	pDoc->m_nSpeed = 0;
}

void CMyView::OnStart() 
{
	// TODO: Add your command handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	SetTimer(1,1000,NULL);
	pDoc->m_nSpeed = 1;

}

void CMyView::OnLow() 
{
	// TODO: Add your command handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	SetTimer(1,1000,NULL);
	pDoc->m_nSpeed = 1;
}

void CMyView::OnUpdateLow(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	pCmdUI->SetCheck(pDoc->m_nSpeed == 1);
}

void CMyView::OnMedium() 
{
	// TODO: Add your command handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	SetTimer(1,500,NULL);
	pDoc->m_nSpeed = 2;	
}

void CMyView::OnUpdateMedium(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	pCmdUI->SetCheck(pDoc->m_nSpeed == 2);
	
}

void CMyView::OnHigh() 
{
	// TODO: Add your command handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	SetTimer(1,100,NULL);
	pDoc->m_nSpeed = 3;	
}

void CMyView::OnUpdateHigh(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	pCmdUI->SetCheck(pDoc->m_nSpeed == 3);
	
}

void CMyView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	CRect rect;
	GetClientRect(&rect);
	InvalidateRect(pDoc->m_rectBody,TRUE);
	pDoc->m_rectBody.right  += 10;
	if(pDoc->m_rectBody.right >rect.right )
	    pDoc->m_rectBody.right = 50;
	pDoc->m_rectBody.left = pDoc->m_rectBody.right - 50;
	InvalidateRect(pDoc->m_rectBody,FALSE);

	CView::OnTimer(nIDEvent);
}