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 picnum1=0,picnum2=0;
IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd)

canvasFrame::canvasFrame()
{
	RECT rect;
	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);
	mdc = new CDC ;
	mdc->CreateCompatibleDC( &dc );  //建立与操作窗口兼容的 DC
	char ch[7];
	for(int i=0;i<=26;i++)
	{
		sprintf( ch , "b%d.bmp" , i ); //取得图文件文件名字符串
		bitmap[i] = new CBitmap ;      //建立各个 CBitmap 对象
		bitmap[i]->m_hObject = (HBITMAP)::LoadImage(NULL, ch ,IMAGE_BITMAP,640,160,LR_LOADFROMFILE); //载入图文件
	}
	mdc->SelectObject(bitmap[0]);  //选择第一张图
}

canvasFrame::~canvasFrame()
{
	delete mdc;                 //释放资源
	for(int i=0;i<=26;i++)
		delete bitmap[i]; //释放资源
}

BEGIN_MESSAGE_MAP(canvasFrame, CFrameWnd)
	//{{AFX_MSG_MAP(canvasFrame)
	ON_WM_PAINT()
	ON_WM_TIMER()
	ON_WM_CREATE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// canvasFrame message handlers

void canvasFrame::OnPaint()
{
	CPaintDC dc(this);    //建立响应WM_PAINT信息的DC
	dc.BitBlt( 0 , 0 , 640 , 480 , mdc , 0 , 0 , SRCCOPY ); //显示第一张图
	dc.BitBlt( 0 , 200 , 640 , 480 , mdc , 0 , 0 , SRCCOPY ); //显示第一张图
}


void canvasFrame::OnTimer(UINT nIDEvent) 
{
	CClientDC dc(this);
	if(nIDEvent==1)
	{
		picnum1++ ;                 //累加图号
		if( picnum1 == 27 )         //判断是否已超过最大图号
		{
			picnum1=0;
			//KillTimer( nIDEvent );  //删除第一个定时器
			return ;
		}
		mdc->SelectObject( bitmap[picnum1] ); //选择显示图案
		dc.BitBlt( 0 , 0 , 640 , 480 , mdc , 0 , 0 , SRCCOPY );
	}
	else
	{
		picnum2++ ;                 //累加图号
		if( picnum2 == 27 )         //判断是否已超过最大图号
		{
			picnum2=0;
			//KillTimer( nIDEvent );  //删除第二个定时器
			return ;
		}
		mdc->SelectObject( bitmap[picnum2] ); //选择显示图案
		dc.BitBlt( 0 , 200 , 640 , 480 , mdc , 0 , 0 , SRCCOPY );
	}
	CFrameWnd::OnTimer(nIDEvent);
}

int canvasFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	SetTimer(1,100,NULL);  //建立定时器
	SetTimer(2,200,NULL);
	return 0;
}