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=50,y=20,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 用来供镂空处理
	mdc1 = new CDC;		    //mdc1 用来选择加载图案
	bitmap = new CBitmap; 
	bgbmp = new CBitmap;  
	tempbmp = new CBitmap;
	mdc->CreateCompatibleDC(&dc);  //建立与dc兼容的DC mdc
	mdc1->CreateCompatibleDC(&dc); //建立与dc兼容的DC mdc1
	tempbmp->CreateCompatibleBitmap(&dc,rect.right,rect.bottom); //建立与dc 兼容的 CBitmap对象 tempbmp
	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(tempbmp);  //设定mdc中储存的位图格式
}

canvasFrame::~canvasFrame()
{
	delete mdc; 
	delete mdc1;
	delete bitmap; 
	delete tempbmp;
	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);
	mdc1->SelectObject(bgbmp);   //选择背景图
	mdc->BitBlt(0,0,rect.right,rect.bottom,mdc1,0,0,SRCCOPY);
	//先将背景图贴到 mdc 中
	mdc1->SelectObject(bitmap); //载入位图
	if(i%2==1)
	{
		mdc->BitBlt(x,y,49,154,mdc1,49,0,SRCAND);
		mdc->BitBlt(x,y,49,154,mdc1,0,0,SRCPAINT);
	}
	else
	{
		mdc->BitBlt(x,y,49,154,mdc1,49,154,SRCAND);
		mdc->BitBlt(x,y,49,154,mdc1,0,154,SRCPAINT);
	}
	dc.BitBlt(0,0,rect.right,rect.bottom,mdc,0,0,SRCCOPY);
	//最后才将 mdc 的内容贴到 dc 中
	if(i == 100)
		KillTimer(nIDEvent);
	i++;
	CFrameWnd::OnTimer(nIDEvent);
}

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