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=0,y=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;        
	bitmap = new CBitmap; //建立CBitmap位图对象
	mdc->CreateCompatibleDC(&dc); //建立与 dc 兼容的 mdc
	bitmap->m_hObject = (HBITMAP)::LoadImage(NULL,"map.bmp",IMAGE_BITMAP,1548,1129,LR_LOADFROMFILE); //载入背景图
	mdc->SelectObject(bitmap);  //选择位图对象到mdc中
}

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


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(0,0,rect.right,rect.bottom,mdc,x,y,SRCCOPY);
	//贴上要显示的背景图部分
	x+=5;   //累加 x 坐标的值
	y+=5;   //累加 y 坐标的值
	if(x > 750)
		KillTimer(nIDEvent);
}

int canvasFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	SetTimer(1,100,NULL);
	// TODO: Add your specialized creation code here
	return 0;
}