MFC 打开Jpg文件

UpdateWindow();
int height, width;
CRect rect;//定义矩形类
CRect rect1;
CImage image; //创建图片类
image.Load(_T("1.jpg"));
height = image.GetHeight();
width = image.GetWidth();

m_ctrlPic.GetClientRect(&rect); //获得pictrue控件所在的矩形区域
CDC *pDc = m_ctrlPic.GetDC();//获得pictrue控件的Dc
SetStretchBltMode(pDc->m_hDC,STRETCH_HALFTONE);
image.StretchBlt(pDc->m_hDC,rect,SRCCOPY);
ReleaseDC(pDc);//释放picture控件的Dc