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    // bycView.cpp : CbycView 类的实现
    //
    
    #include "stdafx.h"
    #include "byc.h"
    #include <vfw.h>
    #include "bycDoc.h"
    #include "bycView.h"
    #include ".\bycview.h"
    
    #ifdef _DEBUG
    #define new DEBUG_NEW
    #endif
    
    
    // CbycView
    
    IMPLEMENT_DYNCREATE(CbycView, CView)
    
    BEGIN_MESSAGE_MAP(CbycView, CView)
     // 标准打印命令
     ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
     ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
     ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
     ON_COMMAND(ID_DEMO, OnDemo)
     ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
    END_MESSAGE_MAP()
    
    // CbycView 构造/析构
    
    CbycView::CbycView()
    {
     // TODO: 在此处添加构造代码
     fileName="bitmap.bmp";
     load();
    
    
    }
    
    CbycView::~CbycView()
    {
     if(m_hDrawDib!=NULL)
     {
     DrawDibClose(m_hDrawDib);
     m_hDrawDib=NULL;
     }
     if(m_bmpSrc!=NULL)
     DeleteObject(m_bmpSrc);
    
    }
    
    BOOL CbycView::PreCreateWindow(CREATESTRUCT& cs)
    {
     // TODO: 在此处通过修改 CREATESTRUCT cs 来修改窗口类或
     // 样式
    
     return CView::PreCreateWindow(cs);
    }
    
    // CbycView 绘制
    
    void CbycView::OnDraw(CDC* pDC)
    {
     CbycDoc* pDoc = GetDocument();
     ASSERT_VALID(pDoc);
     if (!pDoc)
     return;
     if(m_hDrawDib!=NULL&&m_bmpSrc!=NULL)
     {
     BITMAPINFOHEADER RGB32BITSBITMAPINFO=
     {
     sizeof(BITMAPINFOHEADER),m_size.cx,m_size.cy,1,32,BI_RGB,0,0,0,0,0
     };
     DrawDibRealize(m_hDrawDib,pDC->GetSafeHdc(),TRUE); DrawDibDraw(m_hDrawDib,pDC->GetSafeHdc(),0,0,m_size.cx,m_size.cy,&RGB32BITSBITMAPINFO,(LPVOID)m_clrSrc,0,0,m_size.cx,m_size.cy,DDF_BACKGROUNDPAL);
     }
     // TODO: 在此处为本机数据添加绘制代码
    
    }
    
    
    // CbycView 打印
    
    BOOL CbycView::OnPreparePrinting(CPrintInfo* pInfo)
    {
     // 默认准备
     return DoPreparePrinting(pInfo);
    }
    
    void CbycView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
    {
     // TODO: 打印前添加额外的初始化
    }
    
    void CbycView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
    {
     // TODO: 打印后添加清除过程
    }
    
    
    // CbycView 诊断
    
    #ifdef _DEBUG
    void CbycView::AssertValid() const
    {
     CView::AssertValid();
    }
    
    void CbycView::Dump(CDumpContext& dc) const
    {
     CView::Dump(dc);
    }
    
    CbycDoc* CbycView::GetDocument() const // 非调试版本是内联的
    {
     ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CbycDoc)));
     return (CbycDoc*)m_pDocument;
    }
    #endif //_DEBUG
    
    
    // CbycView 消息处理程序
    
    void CbycView::OnDemo()
    {
     // TODO: 在此添加命令处理程序代码
     if(m_bmpSrc==NULL||m_hDrawDib==NULL) 
     return;
     Invalidate();
     BOOL bDone=FALSE;
     int i=0,j;
     BITMAPINFOHEADER RGB32BITSBITMAPINFO=
     {
     sizeof(BITMAPINFOHEADER),m_size.cx,m_size.cy,1,32,BI_RGB,0,0,0,0,0
     };
     CPaintDC dc(this);
     DrawDibRealize(m_hDrawDib,dc.GetSafeHdc(),TRUE);
     while(!bDone)
     {
     if(i>20)
     {
     i=20;bDone=TRUE;
     }
     for(j=i;j<m_size.cy;j+=20) DrawDibDraw(m_hDrawDib,dc.GetSafeHdc(),10,10+j,m_size.cx,1,&RGB32BITSBITMAPINFO,(LPVOID)m_clrSrc,0,j,m_size.cx,1,DDF_BACKGROUNDPAL);
     i++;
     Sleep(100);
     }
    
    }
    
    void CbycView::OnFileOpen()
    {
     // TODO: 在此添加命令处理程序代码
     // TODO: 在此添加命令处理程序代码
     CFileDialog dlg (true, "BMP",_T("*.BMP"), OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, "位图文件(*.BMP)|*.BMP|");
     if(IDOK==dlg.DoModal())
     {
     fileName.Format("%s",dlg.GetPathName());
     }
     load();
     Invalidate();
    
    }
    
    int CbycView::load(void)
    {
     m_bmpSrc=NULL;
     m_hDrawDib=DrawDibOpen();
     HBITMAP hBmp=(HBITMAP)LoadImage(NULL,fileName,IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
     HDC hMemDC=CreateCompatibleDC(NULL);
     if(hMemDC)
     {
     BITMAP bm;
     GetObject(hBmp,sizeof(bm),&bm);
     m_size=CSize(bm.bmWidth,bm.bmHeight);
     //创建32位深度的位图
     BITMAPINFOHEADER RGB32BITSBITMAPINFO = {sizeof(BITMAPINFOHEADER),bm.bmWidth,bm.bmHeight,1,32,BI_RGB,0,0,0,0,0}; this->m_bmpSrc=CreateDIBSection(hMemDC,(BITMAPINFO*)&RGB32BITSBITMAPINFO,DIB_RGB_COLORS,(VOID **)&m_clrSrc,NULL,0);
     if(m_bmpSrc)
     {
     HBITMAP hOldBmp=(HBITMAP)SelectObject(hMemDC , m_bmpSrc);
     HDC hDC=CreateCompatibleDC(hMemDC);
     if(hDC)
     {
     //将原始位图选入内存设备文本对象
     HBITMAP hOldBmp2 =(HBITMAP)::SelectObject(hDC,hBmp);
     //将原始位复制到源位图中
     BitBlt(hMemDC,0,0,bm.bmWidth,bm.bmHeight,hDC,0,0,SRCCOPY);
     //将原始位图复制到目标位图中
     BitBlt(hMemDC,0,0,bm.bmWidth,bm.bmHeight,hDC,0,0,SRCCOPY);
     //恢复默认的位图句柄
     SelectObject(hDC,hOldBmp2);
     //删除内存设备文本对象
     DeleteDC(hDC);
     }
     SelectObject(hMemDC,hOldBmp);
     }
     DeleteDC(hMemDC);
     }
     return 1;
    }
    

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