treectrl.h

wxGTK 是 wxWidgets 的 linux GTK+ (>2.2.3)版本。wxWidgets 是一个跨平台的 GUI 框架

        // associate some data with the item
    void SetItemData(const wxTreeItemId& item, wxTreeItemData *data);

    // item status inquiries
    // ---------------------

        // is the item visible (it might be outside the view or not expanded)?
    bool IsVisible(const wxTreeItemId& item) const;
        // does the item has any children?
    bool ItemHasChildren(const wxTreeItemId& item) const;
        // is the item expanded (only makes sense if HasChildren())?
    bool IsExpanded(const wxTreeItemId& item) const;
        // is this item currently selected (the same as has focus)?
    bool IsSelected(const wxTreeItemId& item) const;

    // number of children
    // ------------------

        // if 'recursively' is false, only immediate children count, otherwise
        // the returned number is the number of all items in this branch
    size_t GetChildrenCount(const wxTreeItemId& item, bool recursively = true);

    // navigation
    // ----------

    // wxTreeItemId.IsOk() will return false if there is no such item

        // get the root tree item
    wxTreeItemId GetRootItem() const;

        // get the item currently selected (may return NULL if no selection)
    wxTreeItemId GetSelection() const;

        // get the parent of this item (may return NULL if root)
    wxTreeItemId GetItemParent(const wxTreeItemId& item) const;

        // for this enumeration function you must pass in a "cookie" parameter
        // which is opaque for the application but is necessary for the library
        // to make these functions reentrant (i.e. allow more than one
        // enumeration on one and the same object simultaneously). Of course,
        // the "cookie" passed to GetFirstChild() and GetNextChild() should be
        // the same!

        // get the last child of this item - this method doesn't use cookies
    wxTreeItemId GetLastChild(const wxTreeItemId& item) const;

        // get the next sibling of this item
    wxTreeItemId GetNextSibling(const wxTreeItemId& item) const;
        // get the previous sibling
    wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const;

        // get first visible item
    wxTreeItemId GetFirstVisibleItem() const;
        // get the next visible item: item must be visible itself!
        // see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
    wxTreeItemId GetNextVisible(const wxTreeItemId& item) const;
        // get the previous visible item: item must be visible itself!
    wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const;

    // operations
    // ----------

        // add the root node to the tree
    wxTreeItemId AddRoot(const wxString& text,
                         int image = -1, int selectedImage = -1,
                         wxTreeItemData *data = NULL);

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

        // insert a new item after a given one
    wxTreeItemId InsertItem(const wxTreeItemId& parent,
                            const wxTreeItemId& idPrevious,
                            const wxString& text,
                            int image = -1, int selectedImage = -1,
                            wxTreeItemData *data = NULL);

        // insert a new item in as the last child of the parent
    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 items from the tree
    void DeleteAllItems();

        // expand this item
    void Expand(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();
        // select this item
    void SelectItem(const wxTreeItemId& 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);

        // 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. textCtrlClass parameter allows you to create an edit
        // control of arbitrary user-defined class deriving from wxTextCtrl.
    wxTextCtrl* EditLabel(const wxTreeItemId& item,
                          wxClassInfo* textCtrlClass = CLASSINFO(wxTextCtrl));
        // returns the same pointer as StartEdit() if the item is being edited,
        // NULL otherwise (it's assumed that no more than one item may be
        // edited simultaneously)
    wxTextCtrl* GetEditControl() const;
        // end editing and accept or discard the changes to item label
    void EndEditLabel(const wxTreeItemId& item, bool discardChanges = false);

        // sort the children of this item using the specified callback function
        // (it should return -1, 0 or +1 as usual), if it's not specified
        // alphabetical comparaison is performed.
        //
        // NB: this function is not reentrant!
    void SortChildren(const wxTreeItemId& item,
                      wxTreeItemCmpFunc *cmpFunction = NULL);

    // deprecated
    // ----------

#if WXWIN_COMPATIBILITY_2_6
    // these methods are deprecated and will be removed in future versions of
    // wxWidgets, they're here for compatibility only, don't use them in new
    // code (the comments indicate why these methods are now useless and how to
    // replace them)

        // use Expand, Collapse, CollapseAndReset or Toggle
    wxDEPRECATED( void ExpandItem(const wxTreeItemId& item, int action) );

        // use SetImageList
    wxDEPRECATED( void SetImageList(wxImageList *imageList, int) )
        { SetImageList(imageList); }

        // 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
    wxDEPRECATED( wxTreeItemId GetFirstChild(const wxTreeItemId& item,
                                             long& cookie) const );
    wxDEPRECATED( wxTreeItemId GetNextChild(const wxTreeItemId& item,
                                            long& cookie) const );
        // use AddRoot, PrependItem or AppendItem
    wxDEPRECATED( wxTreeItemId InsertItem(const wxTreeItemId& parent,
                                          const wxString& text,
                                          int image = -1, int selImage = -1,
                                          long insertAfter = wxTREE_INSERT_LAST) );

#endif // WXWIN_COMPATIBILITY_2_6

        // use Set/GetImageList and Set/GetStateImageList
    wxImageList *GetImageList(int) const
        { return GetImageList(); }

    void SendExpanding(const wxTreeItemId& item);
    void SendExpanded(const wxTreeItemId& item);
    void SendCollapsing(const wxTreeItemId& item);
    void SendCollapsed(const wxTreeItemId& item);
    void SendSelChanging(const wxTreeItemId& item);
    void SendSelChanged(const wxTreeItemId& item);

protected:

    wxTreeItemId m_editItem;
    GtkTree *m_tree;
    GtkTreeItem *m_anchor;
    wxTextCtrl*  m_textCtrl;
    wxImageList* m_imageListNormal;
    wxImageList* m_imageListState;

    long m_curitemId;

    void SendMessage(wxEventType command, const wxTreeItemId& item);
//  GtkTreeItem *findGtkTreeItem(wxTreeCtrlId &id) const;

    // the common part of all ctors
    void Init();
      // insert a new item in as the last child of the parent
    wxTreeItemId p_InsertItem(GtkTreeItem *p,
                              const wxString& text,
                              int image, int selectedImage,
                              wxTreeItemData *data);


    DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
};

#endif
    // _WX_TREECTRL_H_