canvasframe.cpp

《Visual C++游戏设计入门》的配套代码

// 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
int x=590,y=150,i=0;
IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd)

canvasFrame::canvasFrame()
{
	Create(NULL,"绘图窗口");
	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 用来储存镂空后的图案
	bitmap = new CBitmap; //建立源位图
	bgbmp = new CBitmap;  //建立背景图
	mdc->CreateCompatibleDC(&dc);  //建立与dc兼容的DC mdc
	bgbmp->m_hObject = (HBITMAP)::LoadImage(NULL,"bground.bmp",IMAGE_BITMAP,rect.right,rect.bottom,LR_LOADFROMFILE); //载入背景图文件
	bitmap->m_hObject = (HBITMAP)::LoadImage(NULL,"crimer1.bmp",IMAGE_BITMAP,98,308,LR_LOADFROMFILE); //载入源位图文件
	mdc->SelectObject(bgbmp);
}

canvasFrame::~canvasFrame()
{
	delete mdc;
	delete bitmap; 
	delete bgbmp;
}


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) 
{
	CClientDC dc(this);
	CFrameWnd::OnTimer(nIDEvent);
	mdc->SelectObject(bgbmp);
	dc.BitBlt(0,0,rect.right,rect.bottom,mdc,0,0,SRCCOPY);
	mdc->SelectObject(bitmap);
	if(i%2==1)
	{
		dc.BitBlt(x,y,49,154,mdc,49,0,SRCAND);
		dc.BitBlt(x,y,49,154,mdc,0,0,SRCPAINT);
		x-=20;	//x 坐标减 35
		if(x<=0)
			x=690;
	}
	else
	{
		dc.BitBlt(x,y,49,154,mdc,49,154,SRCAND);
		dc.BitBlt(x,y,49,154,mdc,0,154,SRCPAINT);
		x-=20;  //x 坐标减 20
		if(x<=0)
			x=690;
	}
	if(x <= -100) //判断是否到达尽头
		KillTimer(nIDEvent);
	i++;
}

int canvasFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	SetTimer(1,500,NULL);
	// TODO: Add your specialized creation code here
	return 0;
}