怎样在视图里利用CListCtrl做一个缩略图。

shuxin1979 2005-02-24 02:16:59

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xuzheng318 2005-02-24

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http://www.codeproject.com/listctrl/thumbnailview.asp

xuzheng318 2005-02-24

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BEGIN_MESSAGE_MAP(CImagePage, CPropertyPage)
//{{AFX_MSG_MAP(CImagePage)
ON_NOTIFY(NM_CUSTOMDRAW, IDC_LIST_PREVIEW, OnCustomDraw)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CImagePage::OnCustomDraw(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
LPNMLVCUSTOMDRAW pnmCustDraw = (LPNMLVCUSTOMDRAW)pNMHDR;
switch(pnmCustDraw->nmcd.dwDrawStage){
case CDDS_PREPAINT:
*pResult = CDRF_NOTIFYITEMDRAW ;break;
case CDDS_ITEMPREPAINT:
*pResult = CDRF_NOTIFYPOSTPAINT ;break;
case CDDS_ITEMPOSTPAINT:{
int iItem=pnmCustDraw->nmcd.dwItemSpec;
CDC dc;
dc.Attach(pnmCustDraw->nmcd.hdc);
HICON hi=GetIconFromFile(m_strImageFile,iItem);
m_pic.CreateFromIcon(hi);DestroyIcon(hi);
CRect rectDest;
//call CListCtrl::GetItemRect to get target rect
m_wndImgPrvwList.GetItemRect(iItem,rectDest,LVIR_ICON);
dc.DPtoLP(rectDest);
m_pic.Render(&dc,&rectDest);
dc.Detach();
*pResult = CDRF_DODEFAULT;
break;
}
default:
*pResult = CDRF_DODEFAULT;
break;
}
}