mfc_multi_select_ctree_ctr.h

class CTreeCtrlX : public CTreeCtrl
{

protected:
    HTREEITEM    m_hItemFirstSel;        // Init to NULL in constructor
    DWORD        m_dwDragStart;
   
    void ClearSelection();
    BOOL SelectItems(HTREEITEM hItemFrom, HTREEITEM hItemTo);
    HTREEITEM GetFirstSelectedItem();
    HTREEITEM GetNextSelectedItem( HTREEITEM hItem );
    HTREEITEM GetPrevSelectedItem( HTREEITEM hItem );

public:
    DECLARE_MESSAGE_MAP()
    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
    afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
};