void CProcessBar::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)

{

// TODO: Add your message handler code here and/or call default

CImageProcessDoc *pDoc=(CImageProcessDoc *)GetDocument(RUNTIME_CLASS(CImageProcessDoc));

UpdateData(TRUE);

int nSizePos=m_slider_size.GetPos();

m_size_value=nSizePos;

m_size_ratio.Format(_T("%d%%"),m_size_value);

GetDlgItem(IDC_SIZE_RATIO)->SetWindowText(m_size_ratio);

CvvImage img_resize;

img_resize.Create(pDoc->img.Width()*m_size_value*20,pDoc->img.Height()*m_size_value*20,pDoc->img.Bpp());

cvResize(pDoc->img.GetImage(),img_resize.GetImage(),CV_INTER_LINEAR);

pDoc->img.Destroy();

pDoc->img.CopyOf(img_resize);

CDialogBar::OnHScroll(nSBCode, nPos, pScrollBar);

}