void PCB_EDIT_FRAME::OnUpdateLayerPair( wxUpdateUIEvent& aEvent )
{
    PrepareLayerIndicator();
}
void PCB_EDIT_FRAME::ReCreateHToolbar()
{
    wxString msg;

    if( m_mainToolBar )
        return;

    wxWindowUpdateLocker dummy( this );

    m_mainToolBar = new wxAuiToolBar( this, ID_H_TOOLBAR, wxDefaultPosition, wxDefaultSize,
                                      wxAUI_TB_DEFAULT_STYLE | wxAUI_TB_HORZ_LAYOUT );

    // Set up toolbar
    if( Kiface().IsSingle() )
    {
        m_mainToolBar->AddTool( ID_NEW_BOARD, wxEmptyString, KiBitmap( new_pcb_xpm ),
                                _( "New board" ) );
        m_mainToolBar->AddTool( ID_LOAD_FILE, wxEmptyString, KiBitmap( open_brd_file_xpm ),
                                _( "Open existing board" ) );
    }

    m_mainToolBar->AddTool( ID_SAVE_BOARD, wxEmptyString, KiBitmap( save_xpm ),
                            _( "Save board" ) );

    m_mainToolBar->AddSeparator();
    m_mainToolBar->AddTool( ID_SHEET_SET, wxEmptyString, KiBitmap( sheetset_xpm ),
                            _( "Page settings for paper size and texts" ) );

    m_mainToolBar->AddSeparator();
    m_mainToolBar->AddTool( ID_OPEN_MODULE_EDITOR, wxEmptyString,
                            KiBitmap( module_editor_xpm ),
                            _( "Open footprint editor" ) );

    m_mainToolBar->AddTool( ID_OPEN_MODULE_VIEWER, wxEmptyString,
                            KiBitmap( modview_icon_xpm ),
                            _( "Open footprint viewer" ) );

    m_mainToolBar->AddSeparator();
    msg = AddHotkeyName( HELP_UNDO, g_Board_Editor_Hokeys_Descr, HK_UNDO, IS_COMMENT );
    m_mainToolBar->AddTool( wxID_UNDO, wxEmptyString, KiBitmap( undo_xpm ), msg );
    msg = AddHotkeyName( HELP_REDO, g_Board_Editor_Hokeys_Descr, HK_REDO, IS_COMMENT );
    m_mainToolBar->AddTool( wxID_REDO, wxEmptyString, KiBitmap( redo_xpm ), msg );

    m_mainToolBar->AddSeparator();
    m_mainToolBar->AddTool( wxID_PRINT, wxEmptyString, KiBitmap( print_button_xpm ),
                            _( "Print board" ) );
    m_mainToolBar->AddTool( ID_GEN_PLOT, wxEmptyString, KiBitmap( plot_xpm ),
                            _( "Plot (HPGL, PostScript, or GERBER format)" ) );

    m_mainToolBar->AddSeparator();
    msg = AddHotkeyName( HELP_ZOOM_IN, g_Board_Editor_Hokeys_Descr, HK_ZOOM_IN, IS_COMMENT );
    m_mainToolBar->AddTool( ID_ZOOM_IN, wxEmptyString, KiBitmap( zoom_in_xpm ), msg );

    msg = AddHotkeyName( HELP_ZOOM_OUT, g_Board_Editor_Hokeys_Descr, HK_ZOOM_OUT, IS_COMMENT );
    m_mainToolBar->AddTool( ID_ZOOM_OUT, wxEmptyString, KiBitmap( zoom_out_xpm ), msg );

    msg = AddHotkeyName( HELP_ZOOM_REDRAW, g_Board_Editor_Hokeys_Descr, HK_ZOOM_REDRAW,
                         IS_COMMENT );
    m_mainToolBar->AddTool( ID_ZOOM_REDRAW, wxEmptyString, KiBitmap( zoom_redraw_xpm ), msg );

    msg = AddHotkeyName( HELP_ZOOM_FIT, g_Board_Editor_Hokeys_Descr, HK_ZOOM_AUTO, IS_COMMENT );
    m_mainToolBar->AddTool( ID_ZOOM_PAGE, wxEmptyString, KiBitmap( zoom_fit_in_page_xpm ), msg );

    m_mainToolBar->AddSeparator();
    msg = AddHotkeyName( HELP_FIND, g_Board_Editor_Hokeys_Descr, HK_FIND_ITEM, IS_COMMENT );
    m_mainToolBar->AddTool( ID_FIND_ITEMS, wxEmptyString, KiBitmap( find_xpm ), msg );

    m_mainToolBar->AddSeparator();
    m_mainToolBar->AddTool( ID_GET_NETLIST, wxEmptyString, KiBitmap( netlist_xpm ),
                            _( "Read netlist" ) );
    m_mainToolBar->AddTool( ID_DRC_CONTROL, wxEmptyString, KiBitmap( erc_xpm ),
                            _( "Perform design rules check" ) );

    m_mainToolBar->AddSeparator();

    if( m_SelLayerBox == NULL )
    {
        m_SelLayerBox = new PCB_LAYER_BOX_SELECTOR( m_mainToolBar, ID_TOOLBARH_PCB_SELECT_LAYER );
        m_SelLayerBox->SetBoardFrame( this );
    }

    ReCreateLayerBox( false );
    m_mainToolBar->AddControl( m_SelLayerBox );

    PrepareLayerIndicator();    // Initialize the bitmap with current
    // active layer colors for the next tool
    m_mainToolBar->AddTool( ID_AUX_TOOLBAR_PCB_SELECT_LAYER_PAIR, wxEmptyString,
                            *LayerPairBitmap, SEL_LAYER_HELP );

    m_mainToolBar->AddSeparator();
    m_mainToolBar->AddTool( ID_TOOLBARH_PCB_MODE_MODULE, wxEmptyString, KiBitmap( mode_module_xpm ),
                            _( "Mode footprint: manual and automatic movement and placement" ),
                            wxITEM_CHECK );
    m_mainToolBar->AddTool( ID_TOOLBARH_PCB_MODE_TRACKS, wxEmptyString, KiBitmap( mode_track_xpm ),
                            _( "Mode track: autorouting" ), wxITEM_CHECK );

    // Fast call to FreeROUTE Web Bases router
    m_mainToolBar->AddSeparator();
    m_mainToolBar->AddTool( ID_TOOLBARH_PCB_FREEROUTE_ACCESS, wxEmptyString,
                            KiBitmap( web_support_xpm ),
                            _( "Fast access to the FreeROUTE external advanced router" ) );

    // Access to the scripting console
#if defined(KICAD_SCRIPTING_WXPYTHON)
    if( IsWxPythonLoaded() )
    {
        m_mainToolBar->AddSeparator();

        m_mainToolBar->AddTool( ID_TOOLBARH_PCB_SCRIPTING_CONSOLE, wxEmptyString,
                                KiBitmap( py_script_xpm ),
                                _( "Show/Hide the Python Scripting console" ),
                                wxITEM_CHECK );
    }
#endif

    // after adding the buttons to the toolbar, must call Realize() to reflect the changes
    m_mainToolBar->Realize();
}