rename wxGrid::SendSizeEvent() to SendGridSizeEvent() to avoid warnings about conflic...

[wxWidgets.git] / include / wx / dataview.h

diff --git a/include/wx/dataview.h b/include/wx/dataview.h
index 8dd6b72771f8de8f5fee9dc2a2c80c84d0493ba9..e0c0f307685ca63c45739dd764c0e57b3628435c 100644 (file)
--- a/include/wx/dataview.h
+++ b/include/wx/dataview.h
@@ -27,15 +27,11 @@
 
 class WXDLLIMPEXP_FWD_CORE wxImageList;
 
 
 class WXDLLIMPEXP_FWD_CORE wxImageList;
 

-#if !(defined(__WXGTK20__) || defined(__WXMAC__)) || defined(__WXUNIVERSAL__)
+#if !(defined(__WXGTK20__) || defined(__WXOSX_CARBON__)) || defined(__WXUNIVERSAL__)

 // #if !(defined(__WXMAC__)) || defined(__WXUNIVERSAL__)
     #define wxHAS_GENERIC_DATAVIEWCTRL
 #endif
 
 // #if !(defined(__WXMAC__)) || defined(__WXUNIVERSAL__)
     #define wxHAS_GENERIC_DATAVIEWCTRL
 #endif
 

-// ----------------------------------------------------------------------------
-// wxDataViewCtrl flags
-// ----------------------------------------------------------------------------
-

 // ----------------------------------------------------------------------------
 // wxDataViewCtrl globals
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxDataViewCtrl globals
 // ----------------------------------------------------------------------------


@@ -49,6 +45,13 @@ class WXDLLIMPEXP_FWD_ADV wxDataViewModelNotifier;
 
 extern WXDLLIMPEXP_DATA_ADV(const char) wxDataViewCtrlNameStr[];
 
 
 extern WXDLLIMPEXP_DATA_ADV(const char) wxDataViewCtrlNameStr[];
 

+// ----------------------------------------------------------------------------
+// wxDataViewCtrl flags
+// ----------------------------------------------------------------------------
+
+// size of a wxDataViewRenderer without contents:
+#define wxDVC_DEFAULT_RENDERER_SIZE     20
+

 // the default width of new (text) columns:
 #define wxDVC_DEFAULT_WIDTH             80
 
 // the default width of new (text) columns:
 #define wxDVC_DEFAULT_WIDTH             80
 


@@ -78,10 +81,6 @@ public:
     void* GetID() const                { return m_id; }
     operator const void* () const      { return m_id; }
 
     void* GetID() const                { return m_id; }
     operator const void* () const      { return m_id; }
 

-#ifdef __WXDEBUG__
-    void Print( const wxString &text ) const;
-#endif
-

 private:
     void* m_id;
 };
 private:
     void* m_id;
 };


@@ -210,7 +209,7 @@ public:
 
     // default compare function
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,
 
     // default compare function
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,

-                         unsigned int column, bool ascending );
+                         unsigned int column, bool ascending ) const;

     virtual bool HasDefaultCompare() const { return false; }
 
     // internal
     virtual bool HasDefaultCompare() const { return false; }
 
     // internal


@@ -259,7 +258,7 @@ public:
     // compare based on index
 
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,
     // compare based on index
 
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,

-                         unsigned int column, bool ascending );
+                         unsigned int column, bool ascending ) const;

     virtual bool HasDefaultCompare() const;
 
     // implement base methods
     virtual bool HasDefaultCompare() const;
 
     // implement base methods


@@ -324,7 +323,7 @@ public:
     // compare based on index
 
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,
     // compare based on index
 
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,

-                         unsigned int column, bool ascending );
+                         unsigned int column, bool ascending ) const;

     virtual bool HasDefaultCompare() const;
 
     // implement base methods
     virtual bool HasDefaultCompare() const;
 
     // implement base methods


@@ -427,7 +426,7 @@ public:
     virtual int GetAlignment() const = 0;
 
     // in-place editing
     virtual int GetAlignment() const = 0;
 
     // in-place editing

-    virtual bool HasEditorCtrl()
+    virtual bool HasEditorCtrl() const

         { return false; }
     virtual wxControl* CreateEditorCtrl(wxWindow * WXUNUSED(parent),
                                         wxRect WXUNUSED(labelRect),
         { return false; }
     virtual wxControl* CreateEditorCtrl(wxWindow * WXUNUSED(parent),
                                         wxRect WXUNUSED(labelRect),


@@ -526,7 +525,8 @@ public:
         { m_owner = owner; }
 
     // getters:
         { m_owner = owner; }
 
     // getters:

-    unsigned int GetModelColumn() const { return static_cast<unsigned int>(m_model_column); }
+    unsigned int GetModelColumn() const 
+        { return static_cast<unsigned int>(m_model_column); }

     wxDataViewCtrl *GetOwner() const        { return m_owner; }
     wxDataViewRenderer* GetRenderer() const { return m_renderer; }
 
     wxDataViewCtrl *GetOwner() const        { return m_owner; }
     wxDataViewRenderer* GetRenderer() const { return m_renderer; }
 


@@ -566,11 +566,17 @@ public:
     wxDataViewCtrlBase();
     virtual ~wxDataViewCtrlBase();
 
     wxDataViewCtrlBase();
     virtual ~wxDataViewCtrlBase();
 

+    // model
+    // -----
+

     virtual bool AssociateModel( wxDataViewModel *model );
     wxDataViewModel* GetModel();
     const wxDataViewModel* GetModel() const;
 
     virtual bool AssociateModel( wxDataViewModel *model );
     wxDataViewModel* GetModel();
     const wxDataViewModel* GetModel() const;
 

-    // short cuts
+
+    // column management
+    // -----------------
+

     wxDataViewColumn *PrependTextColumn( const wxString &label, unsigned int model_column,
                     wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT, int width = -1,
                     wxAlignment align = wxALIGN_NOT,
     wxDataViewColumn *PrependTextColumn( const wxString &label, unsigned int model_column,
                     wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT, int width = -1,
                     wxAlignment align = wxALIGN_NOT,


@@ -669,7 +675,6 @@ public:
                     wxAlignment align = wxALIGN_CENTER,
                     int flags = wxDATAVIEW_COL_RESIZABLE );
 
                     wxAlignment align = wxALIGN_CENTER,
                     int flags = wxDATAVIEW_COL_RESIZABLE );
 

-

     virtual bool PrependColumn( wxDataViewColumn *col );
     virtual bool InsertColumn( unsigned int pos, wxDataViewColumn *col );
     virtual bool AppendColumn( wxDataViewColumn *col );
     virtual bool PrependColumn( wxDataViewColumn *col );
     virtual bool InsertColumn( unsigned int pos, wxDataViewColumn *col );
     virtual bool AppendColumn( wxDataViewColumn *col );


@@ -688,6 +693,10 @@ public:
 
     virtual wxDataViewColumn *GetSortingColumn() const = 0;
 
 
     virtual wxDataViewColumn *GetSortingColumn() const = 0;
 

+
+    // items management
+    // ----------------
+

     void SetIndent( int indent )
         { m_indent = indent ; DoSetIndent(); }
     int GetIndent() const
     void SetIndent( int indent )
         { m_indent = indent ; DoSetIndent(); }
     int GetIndent() const


@@ -747,10 +756,12 @@ public:
         m_model(NULL),
         m_value(wxNullVariant),
         m_column(NULL),
         m_model(NULL),
         m_value(wxNullVariant),
         m_column(NULL),

-        m_pos(-1,-1),
-        m_dataObject(NULL),
+        m_pos(-1,-1)
+#if wxUSE_DRAG_AND_DROP
+        , m_dataObject(NULL),

         m_dataBuffer(NULL),
         m_dataSize(0)
         m_dataBuffer(NULL),
         m_dataSize(0)

+#endif

         { }
 
     wxDataViewEvent(const wxDataViewEvent& event)
         { }
 
     wxDataViewEvent(const wxDataViewEvent& event)


@@ -760,11 +771,13 @@ public:
         m_model(event.m_model),
         m_value(event.m_value),
         m_column(event.m_column),
         m_model(event.m_model),
         m_value(event.m_value),
         m_column(event.m_column),

-        m_pos(m_pos),
-        m_dataObject(event.m_dataObject),
+        m_pos(m_pos)
+#if wxUSE_DRAG_AND_DROP
+        , m_dataObject(event.m_dataObject),

         m_dataFormat(event.m_dataFormat),
         m_dataBuffer(event.m_dataBuffer),
         m_dataSize(event.m_dataSize)
         m_dataFormat(event.m_dataFormat),
         m_dataBuffer(event.m_dataBuffer),
         m_dataSize(event.m_dataSize)

+#endif

         { }
 
     wxDataViewItem GetItem() const { return m_item; }
         { }
 
     wxDataViewItem GetItem() const { return m_item; }


@@ -787,6 +800,7 @@ public:
     wxPoint GetPosition() const { return m_pos; }
     void SetPosition( int x, int y ) { m_pos.x = x; m_pos.y = y; }
 
     wxPoint GetPosition() const { return m_pos; }
     void SetPosition( int x, int y ) { m_pos.x = x; m_pos.y = y; }
 

+#if wxUSE_DRAG_AND_DROP

     // For drag operations
     void SetDataObject( wxDataObject *obj ) { m_dataObject = obj; }
     wxDataObject *GetDataObject() const { return m_dataObject; }
     // For drag operations
     void SetDataObject( wxDataObject *obj ) { m_dataObject = obj; }
     wxDataObject *GetDataObject() const { return m_dataObject; }


@@ -798,6 +812,7 @@ public:
     size_t GetDataSize() const { return m_dataSize; }
     void SetDataBuffer( void* buf ) { m_dataBuffer = buf;}
     void *GetDataBuffer() const { return m_dataBuffer; }
     size_t GetDataSize() const { return m_dataSize; }
     void SetDataBuffer( void* buf ) { m_dataBuffer = buf;}
     void *GetDataBuffer() const { return m_dataBuffer; }

+#endif // wxUSE_DRAG_AND_DROP

 
     virtual wxEvent *Clone() const { return new wxDataViewEvent(*this); }
 
 
     virtual wxEvent *Clone() const { return new wxDataViewEvent(*this); }
 


@@ -809,37 +824,40 @@ protected:
     wxDataViewColumn   *m_column;
     wxPoint             m_pos;
 
     wxDataViewColumn   *m_column;
     wxPoint             m_pos;
 

+#if wxUSE_DRAG_AND_DROP

     wxDataObject       *m_dataObject;
 
     wxDataFormat        m_dataFormat;
     void*               m_dataBuffer;
     size_t              m_dataSize;
     wxDataObject       *m_dataObject;
 
     wxDataFormat        m_dataFormat;
     void*               m_dataBuffer;
     size_t              m_dataSize;

+#endif // wxUSE_DRAG_AND_DROP

 
 private:
     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxDataViewEvent)
 };
 
 
 private:
     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxDataViewEvent)
 };
 

-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, wxDataViewEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, wxDataViewEvent );

 
 

-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_DONE, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, wxDataViewEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_START_EDITING, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_DONE, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, wxDataViewEvent );

 
 

-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, wxDataViewEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, wxDataViewEvent );

 
 

-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_REORDERED, wxDataViewEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_REORDERED, wxDataViewEvent );

 
 

-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, wxDataViewEvent )
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_DROP, wxDataViewEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, wxDataViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_DROP, wxDataViewEvent );

 
 typedef void (wxEvtHandler::*wxDataViewEventFunction)(wxDataViewEvent&);
 
 
 typedef void (wxEvtHandler::*wxDataViewEventFunction)(wxDataViewEvent&);
 


@@ -856,6 +874,7 @@ typedef void (wxEvtHandler::*wxDataViewEventFunction)(wxDataViewEvent&);
 #define EVT_DATAVIEW_ITEM_COLLAPSED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_COLLAPSED, id, fn)
 #define EVT_DATAVIEW_ITEM_EXPANDING(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EXPANDING, id, fn)
 #define EVT_DATAVIEW_ITEM_EXPANDED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EXPANDED, id, fn)
 #define EVT_DATAVIEW_ITEM_COLLAPSED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_COLLAPSED, id, fn)
 #define EVT_DATAVIEW_ITEM_EXPANDING(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EXPANDING, id, fn)
 #define EVT_DATAVIEW_ITEM_EXPANDED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EXPANDED, id, fn)

+#define EVT_DATAVIEW_ITEM_START_EDITING(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_START_EDITING, id, fn)

 #define EVT_DATAVIEW_ITEM_EDITING_STARTED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EDITING_STARTED, id, fn)
 #define EVT_DATAVIEW_ITEM_EDITING_DONE(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EDITING_DONE, id, fn)
 #define EVT_DATAVIEW_ITEM_VALUE_CHANGED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_VALUE_CHANGED, id, fn)
 #define EVT_DATAVIEW_ITEM_EDITING_STARTED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EDITING_STARTED, id, fn)
 #define EVT_DATAVIEW_ITEM_EDITING_DONE(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EDITING_DONE, id, fn)
 #define EVT_DATAVIEW_ITEM_VALUE_CHANGED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_VALUE_CHANGED, id, fn)


@@ -897,7 +916,7 @@ public:
     wxDataViewSpinRenderer( int min, int max,
                             wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
                             int alignment = wxDVR_DEFAULT_ALIGNMENT );
     wxDataViewSpinRenderer( int min, int max,
                             wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
                             int alignment = wxDVR_DEFAULT_ALIGNMENT );

-    virtual bool HasEditorCtrl() { return true; }
+    virtual bool HasEditorCtrl() const { return true; }

     virtual wxControl* CreateEditorCtrl( wxWindow *parent, wxRect labelRect, const wxVariant &value );
     virtual bool GetValueFromEditorCtrl( wxControl* editor, wxVariant &value );
     virtual bool Render( wxRect rect, wxDC *dc, int state );
     virtual wxControl* CreateEditorCtrl( wxWindow *parent, wxRect labelRect, const wxVariant &value );
     virtual bool GetValueFromEditorCtrl( wxControl* editor, wxVariant &value );
     virtual bool Render( wxRect rect, wxDC *dc, int state );


@@ -922,7 +941,7 @@ public:
     wxDataViewChoiceRenderer( const wxArrayString &choices,
                             wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
                             int alignment = wxDVR_DEFAULT_ALIGNMENT );
     wxDataViewChoiceRenderer( const wxArrayString &choices,
                             wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
                             int alignment = wxDVR_DEFAULT_ALIGNMENT );

-    virtual bool HasEditorCtrl() { return true; }
+    virtual bool HasEditorCtrl() const { return true; }

     virtual wxControl* CreateEditorCtrl( wxWindow *parent, wxRect labelRect, const wxVariant &value );
     virtual bool GetValueFromEditorCtrl( wxControl* editor, wxVariant &value );
     virtual bool Render( wxRect rect, wxDC *dc, int state );
     virtual wxControl* CreateEditorCtrl( wxWindow *parent, wxRect labelRect, const wxVariant &value );
     virtual bool GetValueFromEditorCtrl( wxControl* editor, wxVariant &value );
     virtual bool Render( wxRect rect, wxDC *dc, int state );


@@ -978,7 +997,7 @@ public:
     void AppendItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
     void PrependItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
     void InsertItem(  unsigned int row, const wxVector<wxVariant> &values, wxClientData *data = NULL );
     void AppendItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
     void PrependItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
     void InsertItem(  unsigned int row, const wxVector<wxVariant> &values, wxClientData *data = NULL );

-    void DeleteItem( unsigned pos );
+    void DeleteItem( unsigned int pos );

     void DeleteAllItems();
 
     // override base virtuals
     void DeleteAllItems();
 
     // override base virtuals


@@ -1206,7 +1225,7 @@ public:
     virtual unsigned int GetChildren( const wxDataViewItem &item, wxDataViewItemArray &children ) const;
 
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,
     virtual unsigned int GetChildren( const wxDataViewItem &item, wxDataViewItemArray &children ) const;
 
     virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,

-                         unsigned int column, bool ascending );
+                         unsigned int column, bool ascending ) const;

 
     virtual bool HasDefaultCompare() const
         { return true; }
 
     virtual bool HasDefaultCompare() const
         { return true; }