Re: Question about CListCtrl extended style - LVS_EX_CHECKBOXES

You have to manage the checkbox yourself. This is some code I use:

void CMyDlg::OnNMClickList(NMHDR *pNMHDR, LRESULT *pResult)
{
    NMLISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
    LVHITTESTINFO hitinfo;

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

    //Make the hit test...
    int item = m_cList.HitTest(&hitinfo);
    *pResult = 0;

     if(item != -1) {
        //We hit one item... did we hit state image (check box)?
        //This test only works if we are in list or report mode.
        if( (hitinfo.flags & LVHT_ONITEMSTATEICON) != 0) {
            BOOL bChecked = !m_cList.GetCheck(item);
            m_cList.SetCheck(item,bChecked);
    }
}

http://www.codersource.net/mfc_clistctrl_checkbox.html

Tom