IplImage* plmg;      //定义两个IplImage和CImage类型
    CImage cimg;
    plmg=cvLoadImage(pDoc->m_paName,1);  //然后以路径为参数,把图形读进IplImage
    cimg.CopyOf(plmg);                   //把IplImage转换成CImage类型

    pImg = cimg.GetImage();           //把CImage类型转换成IplImage
    CRect rect(0,0,cimg.Width(),cimg.Height());
    HDC hDC=pDC->GetSafeHdc();
    cimg.DrawToHDC(hDC,rect);            //CImage类型才能用DrawToHDC进行显示