CWnd* pWnd;
pWnd=GetDlgItem(IDC_IMAGE1);
CDC* pDC=pWnd->GetDC();
HDC hDC = pDC->m_hDC;
CRect rect_frame;
CImage image;
pWnd->GetClientRect(&rect_frame);
image.Load(fileName);
::SetStretchBltMode(hDC,HALFTONE);
::SetBrushOrgEx(hDC,0,0,NULL);
image.Draw(hDC,rect_frame);
ReleaseDC(pDC);//释放picture控件的DC
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