fixed static members

[wxWidgets.git] / src / gtk1 / textctrl.cpp

diff --git a/src/gtk1/textctrl.cpp b/src/gtk1/textctrl.cpp
index 28d27d198cbe2a08f99329d63268b63477dd2c14..ccb6dce12bcbae5bc5115662c08440c7565dfa58 100644 (file)
--- a/src/gtk1/textctrl.cpp
+++ b/src/gtk1/textctrl.cpp
@@ -24,6 +24,13 @@
 #include "gtk/gtk.h"
 #include "gdk/gdkkeysyms.h"
 
 #include "gtk/gtk.h"
 #include "gdk/gdkkeysyms.h"
 

+//-----------------------------------------------------------------------------
+// idle system
+//-----------------------------------------------------------------------------
+
+extern void wxapp_install_idle_handler();
+extern bool g_isIdle;
+

 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------


@@ -37,24 +44,31 @@ extern bool   g_blockEventsOnDrag;
 static void
 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 {
 static void
 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 {

-    win->SetModified();
+    if (!win->m_hasVMT) return;

 
 

-    win->CalculateScrollbar();
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+
+    win->SetModified();

 
 

-    wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->m_windowId );
-    event.SetString( copystring(win->GetValue()) );
+    wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
+    event.SetString( win->GetValue() );

     event.SetEventObject( win );
     win->GetEventHandler()->ProcessEvent( event );
     event.SetEventObject( win );
     win->GetEventHandler()->ProcessEvent( event );

-    delete[] event.GetString();

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------

-// "size_allocate"
+// "changed" from vertical scrollbar

 //-----------------------------------------------------------------------------
 
 static void
 //-----------------------------------------------------------------------------
 
 static void

-gtk_text_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* WXUNUSED(alloc), wxTextCtrl *win )
+gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )

 {
 {

+    if (!win->m_hasVMT) return;
+
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+

     win->CalculateScrollbar();
 }
 
     win->CalculateScrollbar();
 }
 


@@ -66,33 +80,25 @@ IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 
 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
     EVT_CHAR(wxTextCtrl::OnChar)
 
 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
     EVT_CHAR(wxTextCtrl::OnChar)

-END_EVENT_TABLE()

 
 

-#ifndef NO_TEXT_WINDOW_STREAM
-wxTextCtrl::wxTextCtrl() : streambuf()
-{
-    if (allocate()) setp(base(),ebuf());
+    EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
+    EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
+    EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
+    EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
+    EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
+
+    EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
+    EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
+    EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
+    EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
+    EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
+END_EVENT_TABLE()

 
 

-    m_modified = FALSE;
-}
-#else

 wxTextCtrl::wxTextCtrl()
 {
     m_modified = FALSE;
 }
 wxTextCtrl::wxTextCtrl()
 {
     m_modified = FALSE;
 }

-#endif

 
 

-#ifndef NO_TEXT_WINDOW_STREAM
-wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
-      const wxPoint &pos, const wxSize &size,
-      int style, const wxValidator& validator, const wxString &name ) : streambuf()
-{
-    if (allocate()) setp(base(),ebuf());
-
-    m_modified = FALSE;
-    Create( parent, id, value, pos, size, style, validator, name );
-}
-#else

 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
       const wxPoint &pos, const wxSize &size,
       int style, const wxValidator& validator, const wxString &name )
 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
       const wxPoint &pos, const wxSize &size,
       int style, const wxValidator& validator, const wxString &name )


@@ -100,7 +106,6 @@ wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
     m_modified = FALSE;
     Create( parent, id, value, pos, size, style, validator, name );
 }
     m_modified = FALSE;
     Create( parent, id, value, pos, size, style, validator, name );
 }

-#endif

 
 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
       const wxPoint &pos, const wxSize &size,
 
 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
       const wxPoint &pos, const wxSize &size,


@@ -111,52 +116,65 @@ bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
 
     PreCreation( parent, id, pos, size, style, name );
 
 
     PreCreation( parent, id, pos, size, style, name );
 

+#if wxUSE_VALIDATORS

     SetValidator( validator );
     SetValidator( validator );

+#endif // wxUSE_VALIDATORS

 
 

-    m_vScrollbarVisible = TRUE;
+    m_vScrollbarVisible = FALSE;

 
     bool multi_line = (style & wxTE_MULTILINE) != 0;
 
     bool multi_line = (style & wxTE_MULTILINE) != 0;

-    if ( multi_line )
+    if (multi_line)

     {
     {

-        // a multi-line edit control: create a vertical scrollbar by default and
-        // horizontal if requested
+#if (GTK_MINOR_VERSION > 2)
+        /* a multi-line edit control: create a vertical scrollbar by default and
+           horizontal if requested */

         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
         bool bHasHScrollbar = (style & wxHSCROLL) != 0;

+#else
+        bool bHasHScrollbar = FALSE;
+#endif

 
 

-        // create our control...
+        /* create our control ... */

         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 
         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 

-        // ... and put into the upper left hand corner of the table
+        /* ... and put into the upper left hand corner of the table */

         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);

+        GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );

         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
                        0, 0);
 
         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
                        0, 0);
 

-        // put the horizontal scrollbar in the lower left hand corner
+        /* always wrap words */
+        gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
+
+#if (GTK_MINOR_VERSION > 2)
+        /* put the horizontal scrollbar in the lower left hand corner */

         if (bHasHScrollbar)
         {
             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
         if (bHasHScrollbar)
         {
             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);

+            GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );

             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,

-                       (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
+                       (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),

                        GTK_FILL,
                        0, 0);
             gtk_widget_show(hscrollbar);
                        GTK_FILL,
                        0, 0);
             gtk_widget_show(hscrollbar);

+
+            /* don't wrap lines, otherwise we wouldn't need the scrollbar */
+            gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );

         }
         }

+#endif

 
 

-        // finally, put the vertical scrollbar in the upper right corner
+        /* finally, put the vertical scrollbar in the upper right corner */

         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );

+        GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );

         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
                      GTK_FILL,
                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
                      0, 0);
         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
                      GTK_FILL,
                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
                      0, 0);

-        gtk_widget_show( m_vScrollbar );
-
-        gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
-          GTK_SIGNAL_FUNC(gtk_text_size_callback), (gpointer)this );

     }
     else
     {
     }
     else
     {

-        // a single-line text control: no need for scrollbars
+        /* a single-line text control: no need for scrollbars */

         m_widget =
           m_text = gtk_entry_new();
     }
         m_widget =
           m_text = gtk_entry_new();
     }


@@ -166,27 +184,46 @@ bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
     if (newSize.y == -1) newSize.y = 26;
     SetSize( newSize.x, newSize.y );
 
     if (newSize.y == -1) newSize.y = 26;
     SetSize( newSize.x, newSize.y );
 

-    m_parent->AddChild( this );
-
-    (m_parent->m_insertCallback)( m_parent, this );
+    m_parent->DoAddChild( this );

 
     PostCreation();
 
     if (multi_line)
 
     PostCreation();
 
     if (multi_line)

-    {
-        gtk_widget_realize(m_text);

         gtk_widget_show(m_text);
         gtk_widget_show(m_text);

-    }

 
 

-    // we want to be notified about text changes
+    /* we want to be notified about text changes */

     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 
     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 

-    if (!value.IsNull())
+    if (multi_line)
+    {
+        gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
+          (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
+    }
+
+    if (!value.IsEmpty())

     {
         gint tmp = 0;
     {
         gint tmp = 0;

+
+#if GTK_MINOR_VERSION == 0
+        // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
+        // gtk_editable_insert_text()
+        gtk_widget_realize(m_text);
+#endif // GTK 1.0
+
+#if wxUSE_UNICODE
+        wxWX2MBbuf val = value.mbc_str();
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
+#else // !Unicode

         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );

-        SetInsertionPointEnd();
+#endif // Unicode/!Unicode
+
+        if (multi_line)
+        {
+            /* bring editable's cursor uptodate. bug in GTK. */
+
+            GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
+        }

     }
 
     if (style & wxTE_PASSWORD)
     }
 
     if (style & wxTE_PASSWORD)


@@ -206,11 +243,11 @@ bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
     }
 
             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
     }
 

-    Show( TRUE );
-
-    SetBackgroundColour( parent->GetBackgroundColour() );
+    SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );

     SetForegroundColour( parent->GetForegroundColour() );
 
     SetForegroundColour( parent->GetForegroundColour() );
 

+    Show( TRUE );
+

     return TRUE;
 }
 
     return TRUE;
 }
 


@@ -224,171 +261,142 @@ void wxTextCtrl::CalculateScrollbar()
     {
         if (m_vScrollbarVisible)
         {
     {
         if (m_vScrollbarVisible)
         {

-        gtk_widget_hide( m_vScrollbar );
-
-        m_vScrollbarVisible = FALSE;
+            gtk_widget_hide( m_vScrollbar );
+            m_vScrollbarVisible = FALSE;

         }
     }
     else
     {
         if (!m_vScrollbarVisible)
         {
         }
     }
     else
     {
         if (!m_vScrollbarVisible)
         {

-        gtk_widget_show( m_vScrollbar );
-
-        m_vScrollbarVisible = TRUE;
+            gtk_widget_show( m_vScrollbar );
+            m_vScrollbarVisible = TRUE;

         }
     }
 }
 
 wxString wxTextCtrl::GetValue() const
 {
         }
     }
 }
 
 wxString wxTextCtrl::GetValue() const
 {

-    wxCHECK_MSG( m_text != NULL, "", "invalid text ctrl" );
+    wxCHECK_MSG( m_text != NULL, _T(""), _T("invalid text ctrl") );

 
     wxString tmp;
     if (m_windowStyle & wxTE_MULTILINE)
     {
         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 
     wxString tmp;
     if (m_windowStyle & wxTE_MULTILINE)
     {
         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );

-        tmp = text;
+        tmp = wxString(text,*wxConvCurrent);

         g_free( text );
     }
     else
     {
         g_free( text );
     }
     else
     {

-        tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
+        tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);

     }
     return tmp;
 }
 
 void wxTextCtrl::SetValue( const wxString &value )
 {
     }
     return tmp;
 }
 
 void wxTextCtrl::SetValue( const wxString &value )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-    wxString tmp = "";
+    wxString tmp = _T("");

     if (!value.IsNull()) tmp = value;
     if (m_windowStyle & wxTE_MULTILINE)
     {
         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
         len = 0;
     if (!value.IsNull()) tmp = value;
     if (m_windowStyle & wxTE_MULTILINE)
     {
         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
         len = 0;

-        gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
+#if wxUSE_UNICODE
+        wxWX2MBbuf tmpbuf = tmp.mbc_str();
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
+#else
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
+#endif

     }
     else
     {
     }
     else
     {

-        gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
+        gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );

     }
 }
 
 void wxTextCtrl::WriteText( const wxString &text )
 {
     }
 }
 
 void wxTextCtrl::WriteText( const wxString &text )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-    if (text.IsNull()) return;
+    if (text.IsEmpty()) return;

 
     if (m_windowStyle & wxTE_MULTILINE)
     {
 
     if (m_windowStyle & wxTE_MULTILINE)
     {

-        gint len = gtk_text_get_length( GTK_TEXT(m_text) );
-        gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
-    }
-    else
-    {
-        gtk_entry_append_text( GTK_ENTRY(m_text), text );
-    }
-}
-
-bool wxTextCtrl::LoadFile( const wxString &file )
-{
-  wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
+        /* this moves the cursor pos to behind the inserted text */
+        gint len = GTK_EDITABLE(m_text)->current_pos;

 
 

-  if (!wxFileExists(file)) return FALSE;
-
-  Clear();
-
-  FILE *fp = (FILE*) NULL;
-  struct stat statb;
+#if wxUSE_UNICODE
+        wxWX2MBbuf buf = text.mbc_str();
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
+#else
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
+#endif

 
 

-  if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
-      !(fp = fopen ((char*) (const char*) file, "r")))
-  {
-      return FALSE;
-  }
-  else
-  {
-    gint len = statb.st_size;
-    char *text;
-    if (!(text = (char*)malloc ((unsigned) (len + 1))))
-    {
-      fclose (fp);
-      return FALSE;
+        /* bring editable's cursor uptodate. bug in GTK. */
+        GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );

     }
     }

-    if (fread (text, sizeof (char), len, fp) != (size_t) len)
+    else

     {
     {

-    }
-    fclose (fp);
+        /* this moves the cursor pos to behind the inserted text */
+        gint len = GTK_EDITABLE(m_text)->current_pos;
+#if wxUSE_UNICODE
+        wxWX2MBbuf buf = text.mbc_str();
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
+#else
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
+#endif

 
 

-    text[len] = 0;
+        /* bring editable's cursor uptodate. bug in GTK. */
+        GTK_EDITABLE(m_text)->current_pos += text.Len();

 
 

-    if (m_windowStyle & wxTE_MULTILINE)
-    {
-      gint pos = 0;
-      gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
+        /* bring entry's cursor uptodate. bug in GTK. */
+        gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );

     }
     }

-    else
-    {
-      gtk_entry_set_text( GTK_ENTRY(m_text), text );
-    }
-
-    free (text);
-    m_modified = FALSE;
-    return TRUE;
-  }
-  return FALSE;

 }
 
 }
 

-bool wxTextCtrl::SaveFile( const wxString &file )
+void wxTextCtrl::AppendText( const wxString &text )

 {
 {

-  wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
-
-  if (file == "") return FALSE;
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-  FILE *fp;
+    if (text.IsEmpty()) return;

 
 

-  if (!(fp = fopen ((char*) (const char*) file, "w")))
-    {
-      return FALSE;
-    }
-  else
+    if (m_windowStyle & wxTE_MULTILINE)

     {
     {

-      char *text = (char*) NULL;
-      gint len = 0;
+        bool hasSpecialAttributes = m_font.Ok() ||
+                                    m_foregroundColour.Ok() ||
+                                    m_backgroundColour.Ok();
+        if ( hasSpecialAttributes )
+        {
+             gtk_text_insert( GTK_TEXT(m_text),
+                              m_font.GetInternalFont(),
+                              m_foregroundColour.GetColor(),
+                              m_backgroundColour.GetColor(),
+                              text.mbc_str(), text.length());

 
 

-      if (m_windowStyle & wxTE_MULTILINE)
-      {
-        len = gtk_text_get_length( GTK_TEXT(m_text) );
-        text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
-      }
-      else
-      {
-        text = gtk_entry_get_text( GTK_ENTRY(m_text) );
-      }
+        }
+        else
+        {
+            /* we'll insert at the last position */
+            gint len = gtk_text_get_length( GTK_TEXT(m_text) );
+#if wxUSE_UNICODE
+            wxWX2MBbuf buf = text.mbc_str();
+            gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
+#else
+            gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
+#endif
+        }

 
 

-      if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
-    {
-      // Did not write whole file
+        /* bring editable's cursor uptodate. bug in GTK. */
+        GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );

     }
     }

-
-      // Make sure newline terminates the file
-      if (text[len - 1] != '\n')
-    fputc ('\n', fp);
-
-      fclose (fp);
-
-      if (m_windowStyle & wxTE_MULTILINE) g_free( text );
-
-      m_modified = FALSE;
-      return TRUE;
+    else
+    {
+        gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );

     }
     }

-
-  return TRUE;

 }
 
 wxString wxTextCtrl::GetLineText( long lineNo ) const
 }
 
 wxString wxTextCtrl::GetLineText( long lineNo ) const


@@ -400,7 +408,7 @@ wxString wxTextCtrl::GetLineText( long lineNo ) const
 
     if (text)
     {
 
     if (text)
     {

-        wxString buf("");
+        wxString buf(_T(""));

         long i;
         int currentLine = 0;
         for (i = 0; currentLine != lineNo && text[i]; i++ )
         long i;
         int currentLine = 0;
         for (i = 0; currentLine != lineNo && text[i]; i++ )


@@ -426,34 +434,51 @@ wxString wxTextCtrl::GetLineText( long lineNo ) const
 
 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 {
 
 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 {

-    wxFAIL_MSG( "wxTextCtrl::OnDropFiles not implemented" );
+  /* If you implement this, don't forget to update the documentation!
+   * (file docs/latex/wx/text.tex) */
+    wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );

 }
 
 }
 

-long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
+bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const

 {
 {

-  if (!(m_windowStyle & wxTE_MULTILINE))
-    return 0;
-  gint len = gtk_text_get_length( GTK_TEXT(m_text) );
-  char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
-  if(!text)
-    return 0;
-  if( pos >= len)
-    return pos=len-1;
-
-  *x=1;   // Col 1
-  *y=1;   // Line 1
-  for (int i = 0; i < pos; i++ )
-    {
-      if (text[i] == '\n')
+    if ( m_windowStyle & wxTE_MULTILINE )

     {
     {

-      (*y)++;
-      *x=1;
+        wxString text = GetValue();
+
+        // cast to prevent warning. But pos really should've been unsigned.
+        if( (unsigned long)pos > text.Len()  )
+            return FALSE;
+
+        *x=0;   // First Col
+        *y=0;   // First Line
+
+        const wxChar* stop = text.c_str() + pos;
+        for ( const wxChar *p = text.c_str(); p < stop; p++ )
+        {
+            if (*p == _T('\n'))
+            {
+                (*y)++;
+                *x=0;
+            }
+            else
+                (*x)++;
+        }

     }
     }

-      else
-    (*x)++;
+    else // single line control
+    {
+        if ( pos <= GTK_ENTRY(m_text)->text_length )
+        {
+            *y = 0;
+            *x = pos;
+        }
+        else
+        {
+            // index out of bounds
+            return FALSE;
+        }

     }
     }

-  g_free( text );
-  return 1;
+
+    return TRUE;

 }
 
 long wxTextCtrl::XYToPosition(long x, long y ) const
 }
 
 long wxTextCtrl::XYToPosition(long x, long y ) const


@@ -461,10 +486,9 @@ long wxTextCtrl::XYToPosition(long x, long y ) const
     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 
     long pos=0;
     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 
     long pos=0;

+    for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'

 
 

-    for( int i=1; i<y; i++ ) pos += GetLineLength(i);
-
-    pos +=x-1; // Pos start with 0
+    pos += x;

     return pos;
 }
 
     return pos;
 }
 


@@ -485,45 +509,76 @@ int wxTextCtrl::GetNumberOfLines() const
         {
             int currentLine = 0;
             for (int i = 0; i < len; i++ )
         {
             int currentLine = 0;
             for (int i = 0; i < len; i++ )

-        {
+            {

                 if (text[i] == '\n')
                 if (text[i] == '\n')

-                  currentLine++;
-        }
+                    currentLine++;
+            }

             g_free( text );
             g_free( text );

-            return currentLine;
+
+            // currentLine is 0 based, add 1 to get number of lines
+            return currentLine + 1;

         }
         else
         }
         else

-    {
+        {

             return 0;
             return 0;

-    }
+        }

     }
     else
     {
     }
     else
     {

-       return 1;
+        return 1;

     }
 }
 
 void wxTextCtrl::SetInsertionPoint( long pos )
 {
     }
 }
 
 void wxTextCtrl::SetInsertionPoint( long pos )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-    int tmp = (int) pos;

     if (m_windowStyle & wxTE_MULTILINE)
     if (m_windowStyle & wxTE_MULTILINE)

-        gtk_text_set_point( GTK_TEXT(m_text), tmp );
+    {
+        /* seems to be broken in GTK 1.0.X:
+           gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
+
+        gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
+          GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
+
+        /* we fake a set_point by inserting and deleting. as the user
+           isn't supposed to get to know about thos non-sense, we
+           disconnect so that no events are sent to the user program. */
+
+        gint tmp = (gint)pos;
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
+        gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
+
+        gtk_signal_connect( GTK_OBJECT(m_text), "changed",
+          GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
+
+        /* bring editable's cursor uptodate. another bug in GTK. */
+
+        GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
+    }

     else
     else

-        gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
+    {
+        gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
+
+        /* bring editable's cursor uptodate. bug in GTK. */
+
+        GTK_EDITABLE(m_text)->current_pos = pos;
+    }

 }
 
 void wxTextCtrl::SetInsertionPointEnd()
 {
 }
 
 void wxTextCtrl::SetInsertionPointEnd()
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-    SetInsertionPoint(-1);
+    if (m_windowStyle & wxTE_MULTILINE)
+        SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
+    else
+        gtk_entry_set_position( GTK_ENTRY(m_text), -1 );

 }
 
 void wxTextCtrl::SetEditable( bool editable )
 {
 }
 
 void wxTextCtrl::SetEditable( bool editable )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
     if (m_windowStyle & wxTE_MULTILINE)
         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 
     if (m_windowStyle & wxTE_MULTILINE)
         gtk_text_set_editable( GTK_TEXT(m_text), editable );


@@ -531,28 +586,33 @@ void wxTextCtrl::SetEditable( bool editable )
         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 }
 
         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 }
 

+void wxTextCtrl::DiscardEdits()
+{
+    m_modified = FALSE;
+}
+

 void wxTextCtrl::SetSelection( long from, long to )
 {
 void wxTextCtrl::SetSelection( long from, long to )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 }
 
 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 {
 
     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 }
 
 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 {

-    wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
+//    SetInsertionPoint( pos );

 }
 
 long wxTextCtrl::GetInsertionPoint() const
 {
 }
 
 long wxTextCtrl::GetInsertionPoint() const
 {

-    wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
+    wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );

 
     return (long) GTK_EDITABLE(m_text)->current_pos;
 }
 
 long wxTextCtrl::GetLastPosition() const
 {
 
     return (long) GTK_EDITABLE(m_text)->current_pos;
 }
 
 long wxTextCtrl::GetLastPosition() const
 {

-    wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
+    wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );

 
     int pos = 0;
     if (m_windowStyle & wxTE_MULTILINE)
 
     int pos = 0;
     if (m_windowStyle & wxTE_MULTILINE)


@@ -560,31 +620,39 @@ long wxTextCtrl::GetLastPosition() const
     else
         pos = GTK_ENTRY(m_text)->text_length;
 
     else
         pos = GTK_ENTRY(m_text)->text_length;
 

-    return (long)pos-1;
+    return (long)pos;

 }
 
 void wxTextCtrl::Remove( long from, long to )
 {
 }
 
 void wxTextCtrl::Remove( long from, long to )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 }
 
 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 {
 
     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 }
 
 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 
     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );

-    if (value.IsNull()) return;
-    gint pos = (gint)from;
-    gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
+
+    if (!value.IsEmpty())
+    {
+        gint pos = (gint)from;
+#if wxUSE_UNICODE
+        wxWX2MBbuf buf = value.mbc_str();
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
+#else
+        gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
+#endif
+    }

 }
 
 void wxTextCtrl::Cut()
 {
 }
 
 void wxTextCtrl::Cut()
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-#if (GTK_MINOR_VERSION == 1)
+#if (GTK_MINOR_VERSION > 0)

     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 #else
     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 #else
     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );


@@ -593,9 +661,9 @@ void wxTextCtrl::Cut()
 
 void wxTextCtrl::Copy()
 {
 
 void wxTextCtrl::Copy()
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-#if (GTK_MINOR_VERSION == 1)
+#if (GTK_MINOR_VERSION > 0)

     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 #else
     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 #else
     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );


@@ -604,112 +672,110 @@ void wxTextCtrl::Copy()
 
 void wxTextCtrl::Paste()
 {
 
 void wxTextCtrl::Paste()
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-#if (GTK_MINOR_VERSION == 1)
+#if (GTK_MINOR_VERSION > 0)

     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 #else
     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 #endif
 }
 
     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 #else
     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 #endif
 }
 

-void wxTextCtrl::Clear()
+bool wxTextCtrl::CanCopy() const

 {
 {

-    SetValue( "" );
+    // Can copy if there's a selection
+    long from, to;
+    GetSelection(& from, & to);
+    return (from != to) ;

 }
 
 }
 

-void wxTextCtrl::OnChar( wxKeyEvent &key_event )
+bool wxTextCtrl::CanCut() const

 {
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
-
-    if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
-    {
-        wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
-        event.SetEventObject(this);
-        if (GetEventHandler()->ProcessEvent(event)) return;
-    }
+    // Can cut if there's a selection
+    long from, to;
+    GetSelection(& from, & to);
+    return (from != to) ;
+}

 
 

-    key_event.Skip();
+bool wxTextCtrl::CanPaste() const
+{
+    return IsEditable() ;

 }
 
 }
 

-#ifndef NO_TEXT_WINDOW_STREAM
-int wxTextCtrl::overflow( int WXUNUSED(c) )
+// Undo/redo
+void wxTextCtrl::Undo()

 {
 {

-    int len = pptr() - pbase();
-    char *txt = new char[len+1];
-    strncpy(txt, pbase(), len);
-    txt[len] = '\0';
-    (*this) << txt;
-    setp(pbase(), epptr());
-    delete[] txt;
-    return EOF;
+    // TODO
+    wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );

 }
 
 }
 

-int wxTextCtrl::sync()
+void wxTextCtrl::Redo()

 {
 {

-    int len = pptr() - pbase();
-    char *txt = new char[len+1];
-    strncpy(txt, pbase(), len);
-    txt[len] = '\0';
-    (*this) << txt;
-    setp(pbase(), epptr());
-    delete[] txt;
-    return 0;
+    // TODO
+    wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );

 }
 
 }
 

-int wxTextCtrl::underflow()
+bool wxTextCtrl::CanUndo() const

 {
 {

-    return EOF;
+    // TODO
+    wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
+    return FALSE;

 }
 
 }
 

-wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
+bool wxTextCtrl::CanRedo() const

 {
 {

-    WriteText(s);
-    return *this;
+    // TODO
+    wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
+    return FALSE;

 }
 
 }
 

-wxTextCtrl& wxTextCtrl::operator<<(float f)
+// If the return values from and to are the same, there is no
+// selection.
+void wxTextCtrl::GetSelection(long* from, long* to) const

 {
 {

-    static char buf[100];
-    sprintf(buf, "%.2f", f);
-    WriteText(buf);
-    return *this;
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
+
+    if (!(GTK_EDITABLE(m_text)->has_selection))
+    {
+        if (from) *from = 0;
+        if (to)   *to = 0;
+        return;
+    }
+
+    if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
+    if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;

 }
 
 }
 

-wxTextCtrl& wxTextCtrl::operator<<(double d)
+bool wxTextCtrl::IsEditable() const

 {
 {

-    static char buf[100];
-    sprintf(buf, "%.2f", d);
-    WriteText(buf);
-    return *this;
+    wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
+
+    return GTK_EDITABLE(m_text)->editable;

 }
 
 }
 

-wxTextCtrl& wxTextCtrl::operator<<(int i)
+bool wxTextCtrl::IsModified() const

 {
 {

-    static char buf[100];
-    sprintf(buf, "%i", i);
-    WriteText(buf);
-    return *this;
+    return m_modified;

 }
 
 }
 

-wxTextCtrl& wxTextCtrl::operator<<(long i)
+void wxTextCtrl::Clear()

 {
 {

-    static char buf[100];
-    sprintf(buf, "%ld", i);
-    WriteText(buf);
-    return *this;
+    SetValue( _T("") );

 }
 
 }
 

-wxTextCtrl& wxTextCtrl::operator<<(const char c)
+void wxTextCtrl::OnChar( wxKeyEvent &key_event )

 {
 {

-    char buf[2];
+    wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );

 
 

-    buf[0] = c;
-    buf[1] = 0;
-    WriteText(buf);
-    return *this;
+    if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
+    {
+        wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
+        event.SetEventObject(this);
+        if (GetEventHandler()->ProcessEvent(event)) return;
+    }
+
+    key_event.Skip();

 }
 }

-#endif

 
 GtkWidget* wxTextCtrl::GetConnectWidget()
 {
 
 GtkWidget* wxTextCtrl::GetConnectWidget()
 {


@@ -724,43 +790,72 @@ bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
         return (window == GTK_ENTRY(m_text)->text_area);
 }
 
         return (window == GTK_ENTRY(m_text)->text_area);
 }
 

-void wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
+// the font will change for subsequent text insertiongs
+bool wxTextCtrl::SetFont( const wxFont &font )

 {
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );

 
 

-    // doesn't work
+    if ( !wxWindowBase::SetFont(font) )
+    {
+        // font didn't change, nothing to do
+        return FALSE;
+    }
+
+    if ( m_windowStyle & wxTE_MULTILINE )
+    {
+        // for compatibility with other ports: the font is a global controls
+        // characteristic, so change the font globally
+        wxString value = GetValue();
+        if ( !value.IsEmpty() )
+        {
+            Clear();
+
+            AppendText(value);
+        }
+    }
+
+    return TRUE;

 }
 
 }
 

-void wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
+bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )

 {
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );

 
     // doesn't work
 
     // doesn't work

+    return FALSE;

 }
 
 }
 

-void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
+bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )

 {
 {

-    wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
+    wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );

 
     wxControl::SetBackgroundColour( colour );
 
 
     wxControl::SetBackgroundColour( colour );
 

+    if (!m_widget->window)
+        return FALSE;
+

     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
     if (sysbg.Red() == colour.Red() &&
         sysbg.Green() == colour.Green() &&
         sysbg.Blue() == colour.Blue())
     {
     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
     if (sysbg.Red() == colour.Red() &&
         sysbg.Green() == colour.Green() &&
         sysbg.Blue() == colour.Blue())
     {

-        return;
+        return FALSE; // FIXME or TRUE?

     }
 
     }
 

-    if (!m_backgroundColour.Ok()) return;
+    if (!m_backgroundColour.Ok())
+        return FALSE;

 
     if (m_windowStyle & wxTE_MULTILINE)
     {
         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 
     if (m_windowStyle & wxTE_MULTILINE)
     {
         GdkWindow *window = GTK_TEXT(m_text)->text_area;

+        if (!window)
+            return FALSE;

         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
         gdk_window_set_background( window, m_backgroundColour.GetColor() );
         gdk_window_clear( window );
     }
         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
         gdk_window_set_background( window, m_backgroundColour.GetColor() );
         gdk_window_clear( window );
     }

+
+    return TRUE;

 }
 
 void wxTextCtrl::ApplyWidgetStyle()
 }
 
 void wxTextCtrl::ApplyWidgetStyle()


@@ -776,3 +871,52 @@ void wxTextCtrl::ApplyWidgetStyle()
     }
 }
 
     }
 }
 

+void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
+{
+    Cut();
+}
+
+void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
+{
+    Copy();
+}
+
+void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
+{
+    Paste();
+}
+
+void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
+{
+    Undo();
+}
+
+void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
+{
+    Redo();
+}
+
+void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
+{
+    event.Enable( CanCut() );
+}
+
+void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
+{
+    event.Enable( CanCopy() );
+}
+
+void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
+{
+    event.Enable( CanPaste() );
+}
+
+void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
+{
+    event.Enable( CanUndo() );
+}
+
+void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
+{
+    event.Enable( CanRedo() );
+}