www.pudn.com > CH4-1.rar > Canvasframe.cpp

// canvasFrame.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "canvasr.h" 
#include "canvasFrame.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// canvasFrame 
IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd) 
int x=0,y=0,vx=21,vy=21; 
canvasFrame::canvasFrame() 
{ 
	Create(NULL,"»æͼ´°¿Ú"); 
	CClientDC dc(this); 
	int width = dc.GetDeviceCaps(HORZRES); 
	int height = dc.GetDeviceCaps(VERTRES); 
	GetWindowRect( &rect ); 
	width = ( width - ( rect.right - rect.left ))/2 ; 
	height = (height - (rect.bottom - rect.top ))/2 ; 
	MoveWindow( width , height , (rect.right - rect.left ) , (rect.bottom - rect.top ) ,true); 
	GetClientRect(&rect); 
	mdc = new CDC; 
	mdc->CreateCompatibleDC(&dc); 
	ball = new CBitmap; 
	ball->m_hObject = (HBITMAP)::LoadImage(NULL,"ball.bmp",IMAGE_BITMAP,81,81,LR_LOADFROMFILE);  
	mdc->SelectObject(ball); 
} 
 
canvasFrame::~canvasFrame() 
{ 
	delete mdc; 
	delete ball; 
} 
 
 
BEGIN_MESSAGE_MAP(canvasFrame, CFrameWnd) 
	//{{AFX_MSG_MAP(canvasFrame) 
	ON_WM_TIMER() 
	ON_WM_CREATE() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// canvasFrame message handlers 
 
void canvasFrame::OnTimer(UINT nIDEvent)  
{ 
	CFrameWnd::OnTimer(nIDEvent); 
	CClientDC dc(this); 
	dc.BitBlt(x,y,81,81,mdc,0,0,SRCCOPY);  
	x += vx;  
	y += vy;  
	if(y+60 > rect.bottom)   
	{ 
		vy = -vy; 
		y = rect.bottom -60; 
	} 
	if(x+60 > rect.right)   
	{ 
		vx = -vx; 
		x = rect.right -60; 
	} 
	if(y < -21)        
	{ 
		vy = -vy; 
		y = -21; 
	} 
	if(x < -21)        
	{ 
		vx = -vx; 
		x =- 21; 
	} 
} 
 
int canvasFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)  
{ 
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1) 
		return -1; 
	SetTimer(1,0,NULL); 
	return 0; 
}