【VC开源代码栏目提醒】：网学会员为广大网友收集整理了，bitmapView.cpp，希望对大家有所帮助！

    // bitmapView.cpp : CbitmapView 类的实现
    //
    
    #include "stdafx.h"
    #include "bitmap.h"
    
    #include "bitmapDoc.h"
    #include "bitmapView.h"
    #include ".\bitmapview.h"
    
    #ifdef _DEBUG
    #define new DEBUG_NEW
    #endif
    
    
    // CbitmapView
    
    IMPLEMENT_DYNCREATE(CbitmapView, CView)
    
    BEGIN_MESSAGE_MAP(CbitmapView, 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_FILE_OPEN, OnFileOpen)
    END_MESSAGE_MAP()
    
    // CbitmapView 构造/析构
    
    CbitmapView::CbitmapView()
    {
     // TODO: 在此处添加构造代码
     state=0;
    
    }
    
    CbitmapView::~CbitmapView()
    {
    }
    
    BOOL CbitmapView::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);
    }
    
    // CbitmapView 绘制
    
    void CbitmapView::OnDraw(CDC* pDC)
    {
     CbitmapDoc* pDoc = GetDocument();
     ASSERT_VALID(pDoc);
     if (!pDoc)
     return;
     if(state==1)
     {
     CDC dcImage;
     if(!dcImage.CreateCompatibleDC(pDC))
     return;
     BITMAP bm;
     m_bit.GetBitmap(&bm);
     dcImage.SelectObject(&m_bit);
     pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&dcImage,0,0,SRCCOPY);
     state=0;
     m_bit.Detach();
     }
    
    
     // TODO: 在此处为本机数据添加绘制代码
    }
    
    
    // CbitmapView 打印
    
    BOOL CbitmapView::OnPreparePrinting(CPrintInfo* pInfo)
    {
     // 默认准备
     return DoPreparePrinting(pInfo);
    }
    
    void CbitmapView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
    {
     // TODO: 打印前添加额外的初始化
    }
    
    void CbitmapView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
    {
     // TODO: 打印后添加清除过程
    }
    
    
    // CbitmapView 诊断
    
    #ifdef _DEBUG
    void CbitmapView::AssertValid() const
    {
     CView::AssertValid();
    }
    
    void CbitmapView::Dump(CDumpContext& dc) const
    {
     CView::Dump(dc);
    }
    
    CbitmapDoc* CbitmapView::GetDocument() const // 非调试版本是内联的
    {
     ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CbitmapDoc)));
     return (CbitmapDoc*)m_pDocument;
    }
    #endif //_DEBUG
    
    
    // CbitmapView 消息处理程序
    
    void CbitmapView::OnFileOpen()
    {
     // 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|位图文件(*.BMP)|*.jpg|");
     if(IDOK==dlg.DoModal())
     {
     fileName.Format("%s",dlg.GetPathName());
     ShowPicture(fileName);
     }
    
    
    }
    void CbitmapView::ShowPicture(CString fileName)
    {
     if(state==0)
     {
     HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,_T(fileName),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);
     m_bit.Attach (hBitmap);
     state =1;
     }
     Invalidate();
    }
    
    

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