在MFC C++中列表控件的悬停列标题上显示ToolTip

   NMHDR* pNMHDR = (NMHDR*)lParam;

   if (pNMHDR->code == TTN_NEEDTEXT)

   {

       TOOLTIPTEXT* pTTT = (TOOLTIPTEXT*)lParam;

       if (pTTT->uFlags & TTF_IDISHWND)

       {

           // 获取列标题的文本

           CString strText;

           CHeaderCtrl* pHeader = m_ListCtrl.GetHeaderCtrl();

           int nColumnCount = pHeader->GetItemCount();

           for (int i = 0; i < nColumnCount; i++)

           {

               CRect rect;

               pHeader->GetItemRect(i, &rect);

               if (rect.PtInRect(pNMHDR->hwndFrom))

               {

                   pHeader->GetItem(i, &hditem);

                   strText = hditem.pszText;

                   break;

               }

           }

           // 设置ToolTip的文本

           _tcscpy_s(pTTT->szText, strText);

           pTTT->hinst = AfxGetResourceHandle();

           return TRUE;

       }

   }

   return CDialogEx::OnNotify(wParam, lParam, pResult);

   CDialogEx::OnDestroy();

   // 销毁ToolTip控件

   m_ToolTip.DestroyWindow();