Re: Detect changes in ClistCtrl control with checkbox

 ON_NOTIFY(NM_CLICK, IDC_LIST, &CSpanRestoreDlg::OnNMClickList)

// Check or uncheck item. If more than one item is selected then use the
one from the
// hit test to determine how we are setting the others (I.E., if it is off
we turn the other
// selected ones on).
void CMyDlg::OnNMClickList(NMHDR *pNMHDR, LRESULT *pResult)
{
     NMLISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
     LVHITTESTINFO hitinfo;
        *pResult = 0;

    bool bChecked = false;

     //Copy click point
     hitinfo.pt = pNMListView->ptAction;

     //Make the hit test...
     int nItem = m_cList.HitTest(&hitinfo);

     if(hitinfo.flags != LVHT_ONITEMSTATEICON)
          return; // Didn't click on an icon

     if(m_cList.GetItemState(nItem,LVIS_SELECTED) != LVIS_SELECTED) {
          // They clicked on one that is not selected... just change it
         // ... do something here
        bChecked = m_cList.GetCheck(nItem);
        bChecked = !bChecked;
        m_cList.SetCheck(nItem,bChecked);
        *pResult = 1;
          return;
     }

      // Get the checked state from the one they clicked on, but change all
the ones that are selected
      UINT uSelectedCount = m_cList.GetSelectedCount();
      // Update all of the selected items.
      if (uSelectedCount > 0) {
           nItem = -1;
           m_cList.SetRedraw(false);
           for (UINT i=0;i < uSelectedCount;i++) {
               nItem = m_cList.GetNextItem(nItem, LVNI_SELECTED);
                m_cList.SetCheck(nItem,bChecked);
           }
           *pResult = 1;
           m_cList.Invalidate();
           m_cList.SetRedraw();
      }
}

Tom

"asoni12" <asoni12@discussions.microsoft.com> wrote in message
news:C3A5D065-15DA-46BB-9F45-B8208D73E2D0@microsoft.com...