amazeview.cpp

这个是我在学校图书馆CD上下载的源代码案例

// AmazeView.cpp : implementation of the CAmazeView class
//

#include "stdafx.h"
#include "Amaze.h"

#include "AmazeDoc.h"
#include "AmazeView.h"
#include "Setup.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAmazeView

IMPLEMENT_DYNCREATE(CAmazeView, CScrollView)

BEGIN_MESSAGE_MAP(CAmazeView, CScrollView)
	//{{AFX_MSG_MAP(CAmazeView)
	ON_COMMAND(IDC_NEW, OnNew)
	ON_COMMAND(IDC_DIS, OnDis)
	ON_UPDATE_COMMAND_UI(IDC_DIS, OnUpdateDis)
	ON_COMMAND(IDC_WIDTH, OnWidth)
	ON_COMMAND(IDC_HEIGHT, OnHeight)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAmazeView construction/destruction

CAmazeView::CAmazeView()
{
	// TODO: add construction code here
	m_bDis = false;
}

CAmazeView::~CAmazeView()
{
}

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

	return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CAmazeView drawing

void CAmazeView::OnDraw(CDC* pDC)
{
	int i, j;
	CAmazeDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	if(!pDoc->HaveAmaze())
		return;

    for( i = 0 ; i <= 2 * pDoc->GetHeight() ; i++ ){
        for( j = 0 ; j <= 2 * pDoc->GetWidth() ; j++ ){
            if( pDoc->AmazeData(j, i) && pDoc->AmazeData(j + 1, i) ){
				pDC->MoveTo((j + 1) * SEPARATE, (i + 1) * SEPARATE);
				pDC->LineTo((j + 2) * SEPARATE, (i + 1) * SEPARATE);
            }
            if( pDoc->AmazeData(j, i) && pDoc->AmazeData(j, i + 1) ){
				pDC->MoveTo((j + 1) * SEPARATE, (i + 1) * SEPARATE);
				pDC->LineTo((j + 1) * SEPARATE, (i + 2) * SEPARATE);
            }
        }
    }
	if(m_bDis){
		CPen *oldpen, pen(PS_SOLID, 1, RGB(255, 0, 0));
		oldpen = pDC->SelectObject(&pen);
		pDC->MoveTo( (*(pDoc->m_pDisData) + 1) * SEPARATE, (*(pDoc->m_pDisData + 1) + 1) * SEPARATE );
		for( i = 1 ; i < pDoc->m_nDisNum ; i++ )
			pDC->LineTo( (*(pDoc->m_pDisData + 2 * i) + 1) * SEPARATE, (*(pDoc->m_pDisData + 2 * i + 1) + 1) * SEPARATE );
		pDC->SelectObject(oldpen);
	}
}

void CAmazeView::OnInitialUpdate()
{
	CScrollView::OnInitialUpdate();

	CSize sizeTotal;
	// TODO: calculate the total size of this view
	sizeTotal.cx = sizeTotal.cy = 100;
	SetScrollSizes(MM_TEXT, sizeTotal);
}

/////////////////////////////////////////////////////////////////////////////
// CAmazeView diagnostics

#ifdef _DEBUG
void CAmazeView::AssertValid() const
{
	CScrollView::AssertValid();
}

void CAmazeView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CAmazeView message handlers

void CAmazeView::ResetScrollbar()
{
	CAmazeDoc* pDoc = GetDocument();
	CSize sizeTotal;
	sizeTotal.cx = (pDoc->GetWidth() + 1) * 2 * SEPARATE;
	sizeTotal.cy = (pDoc->GetHeight() + 1) * 2 * SEPARATE;;
	SetScrollSizes(MM_TEXT, sizeTotal);
}

void CAmazeView::OnNew() 
{
	// TODO: Add your command handler code here
	GetDocument()->CreateAmaze();//创建迷宫
	ResetScrollbar();//设置滚动条
	Invalidate();//更新显示
}

void CAmazeView::OnDis() 
{
	// TODO: Add your command handler code here
	m_bDis = m_bDis ? false : true;
	Invalidate();
}

void CAmazeView::OnUpdateDis(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	pCmdUI->SetCheck(m_bDis);
}

void CAmazeView::OnWidth() 
{
	// TODO: Add your command handler code here
	CSetup dlg;
	CAmazeDoc* pDoc = GetDocument();
	dlg.m_strPrompt = "迷宫宽度：";
	dlg.m_nValue = pDoc->GetWidth();
	if(dlg.DoModal() == IDOK)
		pDoc->SetWidth(dlg.m_nValue);
}

void CAmazeView::OnHeight() 
{
	// TODO: Add your command handler code here
	CSetup dlg;
	CAmazeDoc* pDoc = GetDocument();
	dlg.m_strPrompt = "迷宫高度：";
	dlg.m_nValue = pDoc->GetHeight();
	if(dlg.DoModal() == IDOK)
		pDoc->SetHeight(dlg.m_nValue);
}