在新建工程时最好将View类的基类设为CScrollView,将void CImageProcessView::OnInitialUpdate()中的内容变为
CScrollView::OnInitialUpdate();
CMainFrame *pMF = (CMainFrame*)AfxGetMainWnd();
CImageProcessDoc *pDoc = (CImageProcessDoc*)pMF->GetActiveDocument();
CSize sizeTotal;
if (pDoc == NULL)
{
sizeTotal.cx = 100; // size required to display image
sizeTotal.cy = 100; // size required to display image
}
else
{
sizeTotal.cx = pDoc->m_lWidth; // size required to display image
sizeTotal.cy = pDoc->m_lHeight; // size required to display image
}
SetScrollSizes(MM_TEXT, sizeTotal);