ballview.cpp

本压缩软件为《Visual C++6.0基础教程》（黑魔方系列）一书的源代码

// ballView.cpp : implementation of the CBallView class
//

#include "stdafx.h"
#include "ball.h"

#include "ballDoc.h"
#include "ballView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CBallView
int x=100,y=0,vx=2,vy=8;

IMPLEMENT_DYNCREATE(CBallView, CView)

BEGIN_MESSAGE_MAP(CBallView, CView)
	//{{AFX_MSG_MAP(CBallView)
	ON_WM_TIMER()
	ON_WM_CREATE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBallView construction/destruction

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

}

CBallView::~CBallView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CBallView drawing

void CBallView::OnDraw(CDC* pDC)
{
	CBallDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	//Create(NULL,"绘图窗口");
	CClientDC dc(this);
	GetClientRect(&rect);
	mdc = new CDC;
	mdc = new CDC;
	mdc->CreateCompatibleDC(&dc);
	ball1 = new CBitmap;
	ball1->m_hObject = (HBITMAP)::LoadImage(NULL,"ball1.bmp",IMAGE_BITMAP,71,69,LR_LOADFROMFILE); //加载小球图
}

/////////////////////////////////////////////////////////////////////////////
// CBallView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CBallView message handlers

void CBallView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	CView::OnTimer(nIDEvent);
	CClientDC dc(this);
	mdc->SelectObject(ball1); //选择位图到 mdc 中
	dc.BitBlt(x,y,71,69,mdc,0,0,SRCCOPY);  //贴上小球图
	x += vx; //计算新的 X 坐标
	y += vy; //计算新的 Y 坐标
	if(y+60 > rect.bottom)  //是否碰到下缘
	{
		vy = -vy;
		y = rect.bottom -60;
	}
	if(x+60 > rect.right)   //是否碰到右缘
	{
		vx = -vx;
		x = rect.right -60;
	}
	if(y < -10)             //是否碰到上缘
	{
		vy = -vy;
		y = -2;
	}
	if(x < -15)             //是否碰到左缘
	{
		vx = -vx;
		x =- 2;
	}	
}
int CBallView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	SetTimer(1,10,NULL);	//创建定是器，设置运动速度	
	// TODO: Add your specialized creation code here	
	return 0;
}