treectlg.h

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        // insert a new item before the one with the given index
    virtual wxTreeItemId InsertItem(const wxTreeItemId& parent,
                            size_t index,
                            const wxString& text,
                            int image = -1, int selectedImage = -1,
                            wxTreeItemData *data = NULL);

        // insert a new item in as the last child of the parent
    virtual wxTreeItemId AppendItem(const wxTreeItemId& parent,
                            const wxString& text,
                            int image = -1, int selectedImage = -1,
                            wxTreeItemData *data = NULL);

        // delete this item and associated data if any
    void Delete(const wxTreeItemId& item);
        // delete all children (but don't delete the item itself)
        // NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events
    void DeleteChildren(const wxTreeItemId& item);
        // delete all items from the tree
        // NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events
    void DeleteAllItems();

        // expand this item
    void Expand(const wxTreeItemId& item);
        // expand this item and all subitems recursively
    void ExpandAll(const wxTreeItemId& item);
        // collapse the item without removing its children
    void Collapse(const wxTreeItemId& item);
        // collapse the item and remove all children
    void CollapseAndReset(const wxTreeItemId& item);
        // toggles the current state
    void Toggle(const wxTreeItemId& item);

        // remove the selection from currently selected item (if any)
    void Unselect();
        // or from the given one (multiselect mode only)
    void UnselectItem(const wxTreeItemId& item) { SelectItem(item, false); }
        // or from all
    void UnselectAll();
        // select this item
    void SelectItem(const wxTreeItemId& item, bool select = true);
        // toggle the item selection
    void ToggleItemSelection(const wxTreeItemId& item)
    {
        SelectItem(item, !IsSelected(item));
    }

        // make sure this item is visible (expanding the parent item and/or
        // scrolling to this item if necessary)
    void EnsureVisible(const wxTreeItemId& item);
        // scroll to this item (but don't expand its parent)
    void ScrollTo(const wxTreeItemId& item);
    void AdjustMyScrollbars();

        // The first function is more portable (because easier to implement
        // on other platforms), but the second one returns some extra info.
    wxTreeItemId HitTest(const wxPoint& point)
        { int dummy; return HitTest(point, dummy); }
    wxTreeItemId HitTest(const wxPoint& point, int& flags);

        // get the bounding rectangle of the item (or of its label only)
    bool GetBoundingRect(const wxTreeItemId& item,
                         wxRect& rect,
                         bool textOnly = false) const;

        // Start editing the item label: this (temporarily) replaces the item
        // with a one line edit control. The item will be selected if it hadn't
        // been before.
    void EditLabel( const wxTreeItemId& item ) { Edit( item ); }
    void Edit( const wxTreeItemId& item );
        // returns a pointer to the text edit control if the item is being
        // edited, NULL otherwise (it's assumed that no more than one item may
        // be edited simultaneously)
    wxTextCtrl* GetEditControl() const;

    // sorting
        // this function is called to compare 2 items and should return -1, 0
        // or +1 if the first item is less than, equal to or greater than the
        // second one. The base class version performs alphabetic comparaison
        // of item labels (GetText)
    virtual int OnCompareItems(const wxTreeItemId& item1,
                               const wxTreeItemId& item2);
        // sort the children of this item using OnCompareItems
        //
        // NB: this function is not reentrant and not MT-safe (FIXME)!
    void SortChildren(const wxTreeItemId& item);

#if WXWIN_COMPATIBILITY_2_4
    // deprecated functions: use Set/GetItemImage directly
    wxDEPRECATED( int GetItemSelectedImage(const wxTreeItemId& item) const );
    wxDEPRECATED( void SetItemSelectedImage(const wxTreeItemId& item, int image) );

    // use the versions taking wxTreeItemIdValue cookies (note that
    // GetNextChild() is not inside wxDEPRECATED on purpose, as otherwise we
    // get twice as many warnings without any added benefit: it is always used
    // with GetFirstChild() anyhow)
    wxDEPRECATED( wxTreeItemId GetFirstChild(const wxTreeItemId& item,
                                             long& cookie) const );
    wxTreeItemId GetNextChild(const wxTreeItemId& item,
                              long& cookie) const;
#endif // WXWIN_COMPATIBILITY_2_4

    virtual bool ShouldInheritColours() const { return false; }

    // implementation only from now on

    // overridden base class virtuals
    virtual bool SetBackgroundColour(const wxColour& colour);
    virtual bool SetForegroundColour(const wxColour& colour);

    virtual void Freeze();
    virtual void Thaw();

    // callbacks
    void OnPaint( wxPaintEvent &event );
    void OnSetFocus( wxFocusEvent &event );
    void OnKillFocus( wxFocusEvent &event );
    void OnChar( wxKeyEvent &event );
    void OnMouse( wxMouseEvent &event );
    void OnGetToolTip( wxTreeEvent &event );
    void OnInternalIdle( );

    virtual wxSize DoGetBestSize() const;

    virtual wxVisualAttributes GetDefaultAttributes() const
    {
        return GetClassDefaultAttributes(GetWindowVariant());
    }

    static wxVisualAttributes
    GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);

    // implementation helpers
protected:
    friend class wxGenericTreeItem;
    friend class wxTreeRenameTimer;
    friend class wxTreeFindTimer;
    friend class wxTreeTextCtrl;

    wxFont               m_normalFont;
    wxFont               m_boldFont;

    wxGenericTreeItem   *m_anchor;
    wxGenericTreeItem   *m_current,
                        *m_key_current,
                        // A hint to select a parent item after deleting a child
                        *m_select_me;
    unsigned short       m_indent;
    unsigned short       m_spacing;
    int                  m_lineHeight;
    wxPen                m_dottedPen;
    wxBrush             *m_hilightBrush,
                        *m_hilightUnfocusedBrush;
    bool                 m_hasFocus;
    bool                 m_dirty;
    bool                 m_ownsImageListNormal,
                         m_ownsImageListState,
                         m_ownsImageListButtons;
    bool                 m_isDragging; // true between BEGIN/END drag events
    bool                 m_lastOnSame;  // last click on the same item as prev
    wxImageList         *m_imageListNormal,
                        *m_imageListState,
                        *m_imageListButtons;

    int                  m_freezeCount;
    int                  m_dragCount;
    wxPoint              m_dragStart;
    wxGenericTreeItem   *m_dropTarget;
    wxCursor             m_oldCursor;  // cursor is changed while dragging
    wxGenericTreeItem   *m_oldSelection;
    wxGenericTreeItem   *m_underMouse; // for visual effects
    wxTreeTextCtrl      *m_textCtrl;

    wxTimer             *m_renameTimer;

    // incremental search data
    wxString             m_findPrefix;
    wxTimer             *m_findTimer;

    bool                 m_dropEffectAboveItem;

    // the common part of all ctors
    void Init();

    // misc helpers
    void SendDeleteEvent(wxGenericTreeItem *itemBeingDeleted);

    void DrawBorder(const wxTreeItemId& item);
    void DrawLine(const wxTreeItemId& item, bool below);
    void DrawDropEffect(wxGenericTreeItem *item);

    void DoSelectItem(const wxTreeItemId& id,
                      bool unselect_others = true,
                      bool extended_select = false);

    wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
                              size_t previous,
                              const wxString& text,
                              int image, int selectedImage,
                              wxTreeItemData *data);

    // called by wxTextTreeCtrl when it marks itself for deletion
    void ResetTextControl();

    // find the first item starting with the given prefix after the given item
    wxTreeItemId FindItem(const wxTreeItemId& id, const wxString& prefix) const;

    bool HasButtons() const { return HasFlag(wxTR_HAS_BUTTONS); }

    void CalculateLineHeight();
    int  GetLineHeight(wxGenericTreeItem *item) const;
    void PaintLevel( wxGenericTreeItem *item, wxDC& dc, int level, int &y );
    void PaintItem( wxGenericTreeItem *item, wxDC& dc);

    void CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y );
    void CalculatePositions();
    void CalculateSize( wxGenericTreeItem *item, wxDC &dc );

    void RefreshSubtree( wxGenericTreeItem *item );
    void RefreshLine( wxGenericTreeItem *item );

    // redraw all selected items
    void RefreshSelected();

    // RefreshSelected() recursive helper
    void RefreshSelectedUnder(wxGenericTreeItem *item);

    void OnRenameTimer();
    bool OnRenameAccept(wxGenericTreeItem *item, const wxString& value);
    void OnRenameCancelled(wxGenericTreeItem *item);

    void FillArray(wxGenericTreeItem*, wxArrayTreeItemIds&) const;
    void SelectItemRange( wxGenericTreeItem *item1, wxGenericTreeItem *item2 );
    bool TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select);
    bool TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select);
    void UnselectAllChildren( wxGenericTreeItem *item );
    void ChildrenClosing(wxGenericTreeItem* item);

private:
    DECLARE_EVENT_TABLE()
    DECLARE_DYNAMIC_CLASS(wxGenericTreeCtrl)
    DECLARE_NO_COPY_CLASS(wxGenericTreeCtrl)
};

#if !defined(__WXMSW__) || defined(__WXUNIVERSAL__)
/*
 * wxTreeCtrl has to be a real class or we have problems with
 * the run-time information.
 */

class WXDLLEXPORT wxTreeCtrl: public wxGenericTreeCtrl
{
    DECLARE_DYNAMIC_CLASS(wxTreeCtrl)

public:
    wxTreeCtrl() {}

    wxTreeCtrl(wxWindow *parent, wxWindowID id = wxID_ANY,
               const wxPoint& pos = wxDefaultPosition,
               const wxSize& size = wxDefaultSize,
               long style = wxTR_DEFAULT_STYLE,
               const wxValidator &validator = wxDefaultValidator,
               const wxString& name = wxTreeCtrlNameStr)
    : wxGenericTreeCtrl(parent, id, pos, size, style, validator, name)
    {
    }
};
#endif // !__WXMSW__ || __WXUNIVERSAL__

#endif // wxUSE_TREECTRL

#endif // _GENERIC_TREECTRL_H_