kicad/pcbnew/edit.cpp

/******************************************************/
/* edit.cpp: fonctions generales de l'edition du PCB */
/******************************************************/

#include "fctsys.h"
#include "appl_wxstruct.h"
#include "class_drawpanel.h"
#include "confirm.h"
#include "eda_doc.h"
#include "gestfich.h"
#include "id.h"

#include "pcbnew.h"
#include "autorout.h"
#include "protos.h"

// Uncomment following line to enable wxBell() command (which beeps speaker)
// #include <wx/utils.h>

static void Process_Move_Item( WinEDA_PcbFrame* frame,
                               EDA_BaseStruct* DrawStruct, wxDC* DC );


/*********************************************************************/
void WinEDA_PcbFrame::Process_Special_Functions( wxCommandEvent& event )
/*********************************************************************/

/* Traite les selections d'outils et les commandes appelees du menu POPUP
 */
{
    int        id = event.GetId();
    wxPoint    pos;
    int        itmp;
    wxClientDC dc( DrawPanel );

    DrawPanel->CursorOff( &dc );
    DrawPanel->PrepareGraphicContext( &dc );

    wxGetMousePosition( &pos.x, &pos.y );

    pos.y += 20;

    switch( id )   // Some (not all ) edit commands must be finished or aborted
    {
    case wxID_CUT:
    case wxID_COPY:
    case ID_AUX_TOOLBAR_PCB_TRACK_WIDTH:
    case ID_AUX_TOOLBAR_PCB_VIA_SIZE:
    case ID_ON_GRID_SELECT:
    case ID_ON_ZOOM_SELECT:
    case ID_PCB_USER_GRID_SETUP:
    case ID_TOOLBARH_PCB_SELECT_LAYER:
    case ID_POPUP_PCB_ROTATE_TEXTEPCB:
    case ID_POPUP_PCB_EDIT_TEXTEPCB:
    case ID_POPUP_PCB_EDIT_MIRE:
    case ID_POPUP_PCB_ROTATE_TEXTMODULE:
    case ID_POPUP_PCB_ROTATE_MODULE_CLOCKWISE:
    case ID_POPUP_PCB_ROTATE_MODULE_COUNTERCLOCKWISE:
    case ID_POPUP_PCB_CHANGE_SIDE_MODULE:
    case ID_POPUP_PCB_EDIT_MODULE:
    case ID_POPUP_PCB_EDIT_TEXTMODULE:
    case ID_POPUP_PCB_STOP_CURRENT_DRAWING:
    case ID_POPUP_PCB_END_TRACK:
    case ID_POPUP_PCB_PLACE_VIA:
    case ID_POPUP_PCB_PLACE_MICROVIA:
    case ID_POPUP_PCB_IMPORT_PAD_SETTINGS:
    case ID_POPUP_PCB_EXPORT_PAD_SETTINGS:
    case ID_POPUP_PCB_GLOBAL_IMPORT_PAD_SETTINGS:
    case ID_POPUP_PCB_STOP_CURRENT_EDGE_ZONE:
    case ID_POPUP_PCB_DELETE_ZONE_LAST_CREATED_CORNER:
    case ID_POPUP_PCB_FILL_ALL_ZONES:
    case ID_POPUP_PCB_REMOVE_FILLED_AREAS_IN_ALL_ZONES:
    case ID_POPUP_PCB_REMOVE_FILLED_AREAS_IN_CURRENT_ZONE:
    case ID_POPUP_PCB_PLACE_ZONE_CORNER:
    case ID_POPUP_PCB_PLACE_ZONE_OUTLINES:
    case ID_POPUP_PCB_EDIT_ZONE_PARAMS:
    case ID_POPUP_PCB_DELETE_ZONE:
    case ID_POPUP_PCB_MOVE_ZONE_CORNER:
    case ID_POPUP_PCB_DRAG_ZONE_OUTLINE_SEGMENT:
    case ID_POPUP_PCB_MOVE_ZONE_OUTLINES:
    case ID_POPUP_PCB_ADD_ZONE_CORNER:
    case ID_POPUP_PCB_DELETE_TRACKSEG:
    case ID_POPUP_PCB_DELETE_TRACK:
    case ID_POPUP_PCB_DELETE_TRACKNET:
    case ID_POPUP_PCB_FILL_ZONE:
    case ID_POPUP_PCB_SELECT_LAYER:
    case ID_POPUP_PCB_SELECT_CU_LAYER:
    case ID_POPUP_PCB_SELECT_LAYER_PAIR:
    case ID_POPUP_PCB_SELECT_NO_CU_LAYER:
    case ID_POPUP_PCB_SELECT_WIDTH:
    case ID_POPUP_PCB_SELECT_AUTO_WIDTH:
    case ID_AUX_TOOLBAR_PCB_SELECT_AUTO_WIDTH:
    case ID_POPUP_PCB_SELECT_WIDTH1:
    case ID_POPUP_PCB_SELECT_WIDTH2:
    case ID_POPUP_PCB_SELECT_WIDTH3:
    case ID_POPUP_PCB_SELECT_WIDTH4:
    case ID_POPUP_PCB_SELECT_WIDTH5:
    case ID_POPUP_PCB_SELECT_WIDTH6:
    case ID_POPUP_PCB_SELECT_WIDTH7:
    case ID_POPUP_PCB_SELECT_WIDTH8:
    case ID_POPUP_PCB_SELECT_VIASIZE:
    case ID_POPUP_PCB_SELECT_VIASIZE1:
    case ID_POPUP_PCB_SELECT_VIASIZE2:
    case ID_POPUP_PCB_SELECT_VIASIZE3:
    case ID_POPUP_PCB_SELECT_VIASIZE4:
    case ID_POPUP_PCB_SELECT_VIASIZE5:
    case ID_POPUP_PCB_SELECT_VIASIZE6:
    case ID_POPUP_PCB_SELECT_VIASIZE7:
    case ID_POPUP_PCB_SELECT_VIASIZE8:
    case ID_POPUP_PCB_MOVE_TRACK_NODE:
    case ID_POPUP_PCB_DRAG_TRACK_SEGMENT_KEEP_SLOPE:
    case ID_POPUP_PCB_DRAG_TRACK_SEGMENT:
    case ID_POPUP_PCB_MOVE_TRACK_SEGMENT:
    case ID_POPUP_PCB_PLACE_MOVED_TRACK_NODE:
    case ID_POPUP_PCB_BREAK_TRACK:
    case ID_POPUP_PCB_EDIT_NET:
    case ID_POPUP_PCB_EDIT_TRACK:
    case ID_POPUP_PCB_EDIT_TRACKSEG:
    case ID_POPUP_PCB_LOCK_ON_TRACKSEG:
    case ID_POPUP_PCB_LOCK_OFF_TRACKSEG:
    case ID_POPUP_PCB_LOCK_ON_TRACK:
    case ID_POPUP_PCB_LOCK_OFF_TRACK:
    case ID_POPUP_PCB_LOCK_ON_NET:
    case ID_POPUP_PCB_LOCK_OFF_NET:
    case ID_POPUP_DELETE_BLOCK:
    case ID_POPUP_PLACE_BLOCK:
    case ID_POPUP_ZOOM_BLOCK:
    case ID_POPUP_INVERT_BLOCK:
    case ID_POPUP_ROTATE_BLOCK:
    case ID_POPUP_COPY_BLOCK:
    case ID_POPUP_PCB_VIA_EDITING:
    case ID_POPUP_PCB_VIA_HOLE_TO_DEFAULT:
    case ID_POPUP_PCB_VIA_HOLE_TO_VALUE:
    case ID_POPUP_PCB_VIA_HOLE_ENTER_VALUE:
    case ID_POPUP_PCB_VIA_HOLE_EXPORT:
    case ID_POPUP_PCB_VIA_HOLE_RESET_TO_DEFAULT:
    case ID_POPUP_PCB_VIA_HOLE_EXPORT_TO_OTHERS:
    case ID_POPUP_PCB_EDIT_DRAWING:
        break;

    case ID_POPUP_CANCEL_CURRENT_COMMAND:
        if( DrawPanel->ManageCurseur
            && DrawPanel->ForceCloseManageCurseur )
        {
            DrawPanel->ForceCloseManageCurseur( DrawPanel, &dc );
        }
        /* Should not be executed, just in case */
        if( GetScreen()->BlockLocate.m_Command != BLOCK_IDLE )
        {
            GetScreen()->BlockLocate.m_Command = BLOCK_IDLE;
            GetScreen()->BlockLocate.m_State   = STATE_NO_BLOCK;
            GetScreen()->BlockLocate.m_BlockDrawStruct = NULL;
        }
        if( m_ID_current_state == 0 )
            SetToolID( 0, wxCURSOR_ARROW, wxEmptyString );
        else
            SetCursor( DrawPanel->m_PanelCursor = DrawPanel->m_PanelDefaultCursor );
        break;

    default:        // Finish (abort ) the command
        if( DrawPanel->ManageCurseur
            && DrawPanel->ForceCloseManageCurseur )
        {
            DrawPanel->ForceCloseManageCurseur( DrawPanel, &dc );
        }

        if( m_ID_current_state != id )
            SetToolID( 0, wxCURSOR_ARROW, wxEmptyString );
        break;
    }

    switch( id )   // Execute command
    {
    case ID_EXIT:
        Close( true );
        break;

    case ID_OPEN_MODULE_EDITOR:
        if( m_ModuleEditFrame == NULL )
        {
            m_ModuleEditFrame =
                new WinEDA_ModuleEditFrame( this,
                                            _( "Module Editor" ),
                                            wxPoint( -1, -1 ),
                                            wxSize( 600, 400 ) );
            m_ModuleEditFrame->Show( true );
            m_ModuleEditFrame->Zoom_Automatique( true );
        }
        else
            m_ModuleEditFrame->Iconize( false );
        break;

    case ID_NEW_PROJECT:
    case ID_LOAD_PROJECT:
        Files_io( event );
        break;

    case ID_PCB_GLOBAL_DELETE:
        InstallPcbGlobalDeleteFrame( pos );
        break;

    case ID_POPUP_PLACE_BLOCK:
        GetScreen()->BlockLocate.m_Command = BLOCK_MOVE;
        DrawPanel->m_AutoPAN_Request = false;
        HandleBlockPlace( &dc );
        break;

    case ID_POPUP_COPY_BLOCK:
        GetScreen()->BlockLocate.m_Command = BLOCK_COPY;
        GetScreen()->BlockLocate.SetMessageBlock( this );
        DrawPanel->m_AutoPAN_Request = false;
        HandleBlockPlace( &dc );
        break;

    case ID_POPUP_ZOOM_BLOCK:
        GetScreen()->BlockLocate.m_Command = BLOCK_ZOOM;
        GetScreen()->BlockLocate.SetMessageBlock( this );
        GetScreen()->BlockLocate.SetMessageBlock( this );
        HandleBlockEnd( &dc );
        break;

    case ID_POPUP_DELETE_BLOCK:
        GetScreen()->BlockLocate.m_Command = BLOCK_DELETE;
        GetScreen()->BlockLocate.SetMessageBlock( this );
        HandleBlockEnd( &dc );
        break;

    case ID_POPUP_ROTATE_BLOCK:
        GetScreen()->BlockLocate.m_Command = BLOCK_ROTATE;
        GetScreen()->BlockLocate.SetMessageBlock( this );
        HandleBlockEnd( &dc );
        break;

    case ID_POPUP_INVERT_BLOCK:
        GetScreen()->BlockLocate.m_Command = BLOCK_INVERT;
        GetScreen()->BlockLocate.SetMessageBlock( this );
        HandleBlockEnd( &dc );
        break;

    case ID_UNDO_BUTT:
        UnDeleteItem( &dc );
        break;

    case ID_DRC_CONTROL:
        Install_Test_DRC_Frame( &dc );
        break;

    case ID_GET_NETLIST:
        InstallNetlistFrame( &dc, wxPoint( -1, -1 ) );
        break;

    case ID_GET_TOOLS:

        // InstalloolsFrame(this, wxPoint(-1,-1) );
        break;

    case ID_FIND_ITEMS:
        InstallFindFrame( pos, &dc );
        break;

    case ID_TRACK_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Add Tracks" ) );
        DisplayTrackSettings();
        if( (GetBoard()->m_Status_Pcb & LISTE_RATSNEST_ITEM_OK) == 0 )
        {
            Compile_Ratsnest( &dc, true );
        }
        break;

    case ID_PCB_ZONES_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Add Zones" ) );
        if( DisplayOpt.DisplayZonesMode != 0 )
            DisplayInfoMessage( this, _( "Warning: Display Zone is OFF!!!" ) );
        if( !g_HightLigt_Status && (g_HightLigth_NetCode > 0 ) )
            Hight_Light( &dc );
        break;

    case ID_PCB_MIRE_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Add Layer Alignment Target" ) );
        break;

    case ID_PCB_PLACE_OFFSET_COORD_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Adjust Zero" ) );
        break;

    case ID_LINE_COMMENT_BUTT:
    case ID_PCB_ARC_BUTT:
    case ID_PCB_CIRCLE_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Add Graphic" ) );
        break;

    case ID_TEXT_COMMENT_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Add Text" ) );
        break;

    case ID_COMPONENT_BUTT:
        SetToolID( id, wxCURSOR_HAND, _( "Add Modules" ) );
        break;

    case ID_PCB_COTATION_BUTT:
        SetToolID( id, wxCURSOR_PENCIL, _( "Add Dimension" ) );
        break;

    case ID_NO_SELECT_BUTT:
        SetToolID( 0, wxCURSOR_ARROW, wxEmptyString );
        break;

    case ID_PCB_HIGHLIGHT_BUTT:
        SetToolID( id, wxCURSOR_HAND, _( "Net Highlight" ) );
        break;

    case ID_PCB_SHOW_1_RATSNEST_BUTT:
        SetToolID( id, wxCURSOR_HAND, _( "Local Ratsnest" ) );
        if( (GetBoard()->m_Status_Pcb & LISTE_RATSNEST_ITEM_OK) == 0 )
            Compile_Ratsnest( &dc, true );
        break;

    case ID_POPUP_CLOSE_CURRENT_TOOL:
        SetToolID( 0, wxCURSOR_ARROW, wxEmptyString );
        break;

    case ID_POPUP_CANCEL_CURRENT_COMMAND:
        break;

    case ID_POPUP_END_LINE:
        DrawPanel->MouseToCursorSchema();

        //	EndSegment(&dc);
        break;

    case ID_POPUP_PCB_EDIT_TRACK:
        if( GetCurItem() == NULL )
            break;
        Edit_Track_Width( &dc, (TRACK*) GetCurItem() );
        DrawPanel->MouseToCursorSchema();
        GetScreen()->SetModify();
        break;

    case ID_POPUP_PCB_EDIT_TRACKSEG:
        if( GetCurItem() == NULL )
            break;
        Edit_TrackSegm_Width( &dc, (TRACK*) GetCurItem() );
        DrawPanel->MouseToCursorSchema();
        GetScreen()->SetModify();
        break;

    case ID_POPUP_PCB_EDIT_NET:
        if( GetCurItem() == NULL )
            break;
        Edit_Net_Width( &dc, ( (TRACK*) GetCurItem() )->GetNet() );
        DrawPanel->MouseToCursorSchema();
        GetScreen()->SetModify();
        break;

    case ID_POPUP_PCB_EDIT_ALL_VIAS_AND_TRACK_SIZE:
    case ID_POPUP_PCB_EDIT_ALL_VIAS_SIZE:
    case ID_POPUP_PCB_EDIT_ALL_TRACK_SIZE:
        if( GetCurItem() == NULL )
            break;
        {
            bool resize_vias = true, resize_track = true;
            if( id == ID_POPUP_PCB_EDIT_ALL_VIAS_SIZE )
                resize_track = false;
            if( id == ID_POPUP_PCB_EDIT_ALL_TRACK_SIZE )
                resize_vias = false;
            if( Resize_Pistes_Vias( &dc, resize_track, resize_vias ) )
                GetScreen()->SetModify();
        }
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_END_TRACK:
        DrawPanel->MouseToCursorSchema();
        End_Route( (TRACK*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_PLACE_MOVED_TRACK_NODE:
        DrawPanel->MouseToCursorSchema();
        if( GetCurItem()->m_Flags & IS_DRAGGED )
        {
            PlaceDraggedTrackSegment( (TRACK*) GetCurItem(), &dc );
        }
        break;

    case ID_POPUP_PCB_PLACE_MICROVIA:
        if( !( (PCB_SCREEN*) GetScreen() )->IsMicroViaAcceptable() )
            break;

    case ID_POPUP_PCB_PLACE_VIA:
        DrawPanel->MouseToCursorSchema();
        if( GetCurItem()->m_Flags & IS_DRAGGED )
        {
            PlaceDraggedTrackSegment( (TRACK*) GetCurItem(), &dc );
        }
        else
        {
            int v_type = g_DesignSettings.m_CurrentViaType;
            if( id == ID_POPUP_PCB_PLACE_MICROVIA )
                g_DesignSettings.m_CurrentViaType = VIA_MICROVIA; // place micro via and switch layer
            Other_Layer_Route( (TRACK*) GetCurItem(), &dc );
            g_DesignSettings.m_CurrentViaType = v_type;
            if( DisplayOpt.ContrastModeDisplay )
                ( (PCB_SCREEN*) GetScreen() )->SetRefreshReq();
        }
        break;

    case ID_POPUP_PCB_DELETE_TRACKSEG:
        if( GetCurItem() == NULL )
            break;
        DrawPanel->MouseToCursorSchema();
        SetCurItem( Delete_Segment( &dc, (TRACK*) GetCurItem() ) );
        GetScreen()->SetModify();
        break;

    case ID_POPUP_PCB_DELETE_TRACK:
        if( GetCurItem() == NULL )
            break;
        DrawPanel->MouseToCursorSchema();
        Delete_Track( &dc, (TRACK*) GetCurItem() );
        SetCurItem( NULL );
        GetScreen()->SetModify();
        break;

    case ID_POPUP_PCB_DELETE_TRACKNET:
        DrawPanel->MouseToCursorSchema();
        Delete_net( &dc, (TRACK*) GetCurItem() );
        SetCurItem( NULL );
        GetScreen()->SetModify();
        break;

    case ID_POPUP_PCB_LOCK_ON_TRACKSEG:
        Attribut_Segment( (TRACK*) GetCurItem(), &dc, true );
        break;

    case ID_POPUP_PCB_LOCK_OFF_TRACKSEG:
        Attribut_Segment( (TRACK*) GetCurItem(), &dc, false );
        break;

    case ID_POPUP_PCB_LOCK_ON_TRACK:
        Attribut_Track( (TRACK*) GetCurItem(), &dc, true );
        break;

    case ID_POPUP_PCB_LOCK_OFF_TRACK:
        Attribut_Track( (TRACK*) GetCurItem(), &dc, false );
        break;

    case ID_POPUP_PCB_LOCK_ON_NET:
        Attribut_net( &dc, ( (TRACK*) GetCurItem() )->GetNet(), true );
        break;

    case ID_POPUP_PCB_LOCK_OFF_NET:
        Attribut_net( &dc, ( (TRACK*) GetCurItem() )->GetNet(), false );
        break;

    case ID_POPUP_PCB_SETFLAGS_TRACK_MNU:
        break;

    case ID_POPUP_PCB_DELETE_ZONE:
        DrawPanel->MouseToCursorSchema();
        if( GetCurItem() == NULL )
            break;
        {
        SEGZONE* zsegm = (SEGZONE*) GetCurItem();
        int netcode = zsegm->GetNet();
        Delete_Zone_Fill( &dc, zsegm );
        SetCurItem( NULL );
        test_1_net_connexion( NULL, netcode );
        GetScreen()->SetModify();
        GetBoard()->DisplayInfo(this );
        }
        break;

    case ID_POPUP_PCB_EDIT_ZONE_PARAMS:
        Edit_Zone_Params( &dc, (ZONE_CONTAINER*) GetCurItem() );
        SetCurItem( NULL ); // Outlines can have changed
        break;

    case ID_POPUP_PCB_ZONE_ADD_SIMILAR_ZONE:
        DrawPanel->MouseToCursorSchema();
        DrawPanel->m_AutoPAN_Request = true;
        Add_Similar_Zone( &dc, (ZONE_CONTAINER*) GetCurItem() );
        break;

    case ID_POPUP_PCB_ZONE_ADD_CUTOUT_ZONE:
        DrawPanel->MouseToCursorSchema();
        DrawPanel->m_AutoPAN_Request = true;
        Add_Zone_Cutout( &dc, (ZONE_CONTAINER*) GetCurItem() );
        break;

    case ID_POPUP_PCB_DELETE_ZONE_CONTAINER:
    case ID_POPUP_PCB_DELETE_ZONE_CUTOUT:
        DrawPanel->MouseToCursorSchema();
        {
        int netcode = ((ZONE_CONTAINER*) GetCurItem())->GetNet();
        Delete_Zone_Contour( &dc, (ZONE_CONTAINER*) GetCurItem() );
        SetCurItem( NULL );
        test_1_net_connexion( NULL, netcode );
        GetBoard()->DisplayInfo(this );
        }
        break;

    case ID_POPUP_PCB_DELETE_ZONE_CORNER:
        Remove_Zone_Corner( &dc, (ZONE_CONTAINER*) GetCurItem() );
        SetCurItem( NULL );
        break;

    case ID_POPUP_PCB_MOVE_ZONE_CORNER:
    {
        DrawPanel->MouseToCursorSchema();
        ZONE_CONTAINER* zone_cont = (ZONE_CONTAINER*) GetCurItem();
        DrawPanel->m_AutoPAN_Request = true;
        Start_Move_Zone_Corner( &dc,
                                zone_cont,
                                zone_cont->m_CornerSelection,
                                false );
        break;
    }

    case ID_POPUP_PCB_DRAG_ZONE_OUTLINE_SEGMENT:
    {
        DrawPanel->MouseToCursorSchema();
        ZONE_CONTAINER* zone_cont = (ZONE_CONTAINER*) GetCurItem();
        DrawPanel->m_AutoPAN_Request = true;
        Start_Move_Zone_Drag_Outline_Edge( &dc,
                                           zone_cont,
                                           zone_cont->m_CornerSelection );
        break;
    }

    case ID_POPUP_PCB_MOVE_ZONE_OUTLINES:
    {
        DrawPanel->MouseToCursorSchema();
        ZONE_CONTAINER* zone_cont = (ZONE_CONTAINER*) GetCurItem();
        DrawPanel->m_AutoPAN_Request = true;
        Start_Move_Zone_Outlines( &dc, zone_cont );
        break;
    }

    case ID_POPUP_PCB_ADD_ZONE_CORNER:
    {
        DrawPanel->MouseToCursorSchema();
        ZONE_CONTAINER* zone_cont = (ZONE_CONTAINER*) GetCurItem();
        wxPoint         pos = GetScreen()->m_Curseur;

        /* add corner between zone_cont->m_CornerSelection
         * and zone_cont->m_CornerSelection+1
         * and start move the new corner
         */
        zone_cont->Draw( DrawPanel, &dc, GR_XOR );
        zone_cont->m_Poly->InsertCorner( zone_cont->m_CornerSelection,
                                         pos.x,
                                         pos.y );
        zone_cont->m_CornerSelection++;
        zone_cont->Draw( DrawPanel, &dc, GR_XOR );
        DrawPanel->m_AutoPAN_Request = true;
        Start_Move_Zone_Corner( &dc,
                                zone_cont,
                                zone_cont->m_CornerSelection,
                                true );
        break;
    }

    case ID_POPUP_PCB_PLACE_ZONE_OUTLINES:
    case ID_POPUP_PCB_PLACE_ZONE_CORNER:
    {
        DrawPanel->MouseToCursorSchema();
        ZONE_CONTAINER* zone_cont = (ZONE_CONTAINER*) GetCurItem();
        End_Move_Zone_Corner_Or_Outlines( &dc, zone_cont );
        DrawPanel->m_AutoPAN_Request = false;
        break;
    }

    case ID_POPUP_PCB_FILL_ALL_ZONES:
        DrawPanel->MouseToCursorSchema();
        Fill_All_Zones();
        GetBoard()->DisplayInfo(this );
        break;

    case ID_POPUP_PCB_REMOVE_FILLED_AREAS_IN_CURRENT_ZONE:
        if( ( GetCurItem() )->Type() == TYPE_ZONE_CONTAINER )
        {
            ZONE_CONTAINER* zone_container = (ZONE_CONTAINER*) GetCurItem();
            Delete_Zone_Fill( &dc, NULL, zone_container->m_TimeStamp );
            test_1_net_connexion( NULL, zone_container->GetNet() );
            GetScreen()->SetModify();
            GetBoard()->DisplayInfo(this );
            DrawPanel->Refresh();
        }
        SetCurItem( NULL );
        break;

    case ID_POPUP_PCB_REMOVE_FILLED_AREAS_IN_ALL_ZONES: // Remove all zones :
        GetBoard()->m_Zone.DeleteAll();    // remove zone segments used to fill zones.
        for( int ii = 0; ii < GetBoard()->GetAreaCount(); ii++ )
        {   // Remove filled aresa in zone
            ZONE_CONTAINER* zone_container = GetBoard()->GetArea( ii );
            zone_container->m_FilledPolysList.clear();;
        }
        SetCurItem(NULL);           // CurItem might be deleted by this command, clear the pointer
        test_connexions( NULL );
        Tst_Ratsnest( NULL, 0 );    // Recalculate the active ratsnest, i.e. the unconnected links */
        GetScreen()->SetModify();
        GetBoard()->DisplayInfo(this );
        DrawPanel->Refresh();
        break;

    case ID_POPUP_PCB_FILL_ZONE:
        DrawPanel->MouseToCursorSchema();
        Fill_Zone( NULL, (ZONE_CONTAINER*) GetCurItem() );
        test_1_net_connexion( NULL, ( (ZONE_CONTAINER*) GetCurItem() )->GetNet() );
        GetBoard()->DisplayInfo(this );
        DrawPanel->Refresh();
        break;

    case ID_PCB_DELETE_ITEM_BUTT:
        SetToolID( id, wxCURSOR_BULLSEYE, _( "Delete item" ) );
        break;

    case ID_POPUP_PCB_MOVE_TEXTEPCB_REQUEST:
        Process_Move_Item( this, GetCurItem(), &dc );
        DrawPanel->m_AutoPAN_Request = true;
        break;

    case ID_POPUP_PCB_DRAG_MODULE_REQUEST:
        g_Drag_Pistes_On = true;

    case ID_POPUP_PCB_MOVE_MODULE_REQUEST:

        // If the current Item is a pad, text module ...: Get the parent
        if( GetCurItem()->Type() != TYPE_MODULE )
            SetCurItem( GetCurItem()->GetParent() );
        if( !GetCurItem() || GetCurItem()->Type() != TYPE_MODULE )
        {
            g_Drag_Pistes_On = false;
            break;
        }
        DrawPanel->MouseToCursorSchema();
        StartMove_Module( (MODULE*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_GET_AND_MOVE_MODULE_REQUEST:      /* get module by name and move it */
        SetCurItem( GetModuleByName() );
        if( GetCurItem() )
        {
            DrawPanel->MouseToCursorSchema();
            StartMove_Module( (MODULE*) GetCurItem(), &dc );
        }
        break;

    case ID_POPUP_PCB_DELETE_MODULE:
        DrawPanel->MouseToCursorSchema();

        // If the current Item is a pad, text module ...: Get the parent
        if( GetCurItem()->Type() != TYPE_MODULE )
            SetCurItem( GetCurItem()->GetParent() );

        if( !GetCurItem() || GetCurItem()->Type() != TYPE_MODULE )
            break;
        if( Delete_Module( (MODULE*) GetCurItem(), &dc, true ) )
        {
            SetCurItem( NULL );
        }
        break;

    case ID_POPUP_PCB_ROTATE_MODULE_COUNTERCLOCKWISE:
        DrawPanel->MouseToCursorSchema();

        // If the current Item is a pad, text module ...: Get the parent
        if( GetCurItem()->Type() != TYPE_MODULE )
            SetCurItem( GetCurItem()->GetParent() );

        if( !GetCurItem() || GetCurItem()->Type() != TYPE_MODULE )
            break;
        Rotate_Module( &dc, (MODULE*) GetCurItem(), -900, true );
        break;

    case ID_POPUP_PCB_ROTATE_MODULE_CLOCKWISE:
        DrawPanel->MouseToCursorSchema();

        // If the current Item is a pad, text module ...: Get the parent
        if( GetCurItem()->Type() != TYPE_MODULE )
            SetCurItem( GetCurItem()->GetParent() );

        if( !GetCurItem() || GetCurItem()->Type() != TYPE_MODULE )
            break;
        Rotate_Module( &dc, (MODULE*) GetCurItem(), 900, true );
        break;

    case ID_POPUP_PCB_CHANGE_SIDE_MODULE:
        DrawPanel->MouseToCursorSchema();

        // If the current Item is a pad, text module ...: Get the parent
        if( GetCurItem()->Type() != TYPE_MODULE )
            SetCurItem( GetCurItem()->GetParent() );
        if( !GetCurItem() || GetCurItem()->Type() != TYPE_MODULE )
            break;
        GetBoard()->Change_Side_Module( (MODULE*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_EDIT_MODULE:

        // If the current Item is a pad, text module ...: Get the parent
        if( GetCurItem()->Type() != TYPE_MODULE )
            SetCurItem( GetCurItem()->GetParent() );
        if( !GetCurItem() || GetCurItem()->Type() != TYPE_MODULE )
            break;
        InstallModuleOptionsFrame( (MODULE*) GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DRAG_PAD_REQUEST:
        g_Drag_Pistes_On = true;
        DrawPanel->MouseToCursorSchema();
        StartMovePad( (D_PAD*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_MOVE_PAD_REQUEST:
        g_Drag_Pistes_On = false;
        DrawPanel->MouseToCursorSchema();
        StartMovePad( (D_PAD*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_EDIT_PAD:
        InstallPadOptionsFrame( (D_PAD*) GetCurItem(), &dc, pos );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_IMPORT_PAD_SETTINGS:
        DrawPanel->MouseToCursorSchema();
        Import_Pad_Settings( (D_PAD*) GetCurItem(), true );
        break;

    case ID_POPUP_PCB_GLOBAL_IMPORT_PAD_SETTINGS:
        DrawPanel->MouseToCursorSchema();
        Global_Import_Pad_Settings( (D_PAD*) GetCurItem(), true );
        break;

    case ID_POPUP_PCB_EXPORT_PAD_SETTINGS:
        DrawPanel->MouseToCursorSchema();
        Export_Pad_Settings( (D_PAD*) GetCurItem() );
        break;

    case ID_POPUP_PCB_DELETE_PAD:
        DeletePad( (D_PAD*) GetCurItem() );
        SetCurItem( NULL );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_EDIT_TEXTMODULE:
        InstallTextModOptionsFrame( (TEXTE_MODULE*) GetCurItem(), &dc, pos );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_MOVE_TEXTMODULE_REQUEST:
        DrawPanel->MouseToCursorSchema();
        StartMoveTexteModule( (TEXTE_MODULE*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_ROTATE_TEXTMODULE:
        RotateTextModule( (TEXTE_MODULE*) GetCurItem(),
                         &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DELETE_TEXTMODULE:
        DeleteTextModule( (TEXTE_MODULE*) GetCurItem() );
        SetCurItem( NULL );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_SELECT_LAYER:
        itmp = SelectLayer(
             ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer, -1, -1 );
        if( itmp >= 0 )
            ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer = itmp;
        DrawPanel->MouseToCursorSchema();
        break;

    case  ID_AUX_TOOLBAR_PCB_SELECT_LAYER_PAIR:
        SelectLayerPair();
        break;

    case ID_POPUP_PCB_SELECT_NO_CU_LAYER:
        itmp = SelectLayer(
             ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer,
            FIRST_NO_COPPER_LAYER,
            -1 );
        if( itmp >= 0 )
            ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer = itmp;
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_SELECT_CU_LAYER:
        itmp = SelectLayer(
             ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer, -1,
            LAST_COPPER_LAYER );
        if( itmp >= 0 )
            ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer = itmp;
        break;

    case ID_POPUP_PCB_SELECT_LAYER_PAIR:
        SelectLayerPair();
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_TOOLBARH_PCB_SELECT_LAYER:
        itmp = m_SelLayerBox->GetChoice();
        ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer =
            (int) ( (size_t) m_SelLayerBox->GetClientData( itmp ) );
        if( DisplayOpt.ContrastModeDisplay )
            DrawPanel->Refresh( true );
        break;

    case ID_POPUP_PCB_EDIT_TEXTEPCB:
        InstallTextPCBOptionsFrame( (TEXTE_PCB*) GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_ROTATE_TEXTEPCB:
        Rotate_Texte_Pcb( (TEXTE_PCB*) GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DELETE_TEXTEPCB:
        Delete_Texte_Pcb( (TEXTE_PCB*) GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_MOVE_MIRE_REQUEST:
        StartMove_Mire( (MIREPCB*) GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_EDIT_MIRE:
        InstallMireOptionsFrame( (MIREPCB*) GetCurItem(), &dc, pos );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DELETE_MIRE:
        DrawPanel->MouseToCursorSchema();
        Delete_Mire( (MIREPCB*) GetCurItem(), &dc );
        SetCurItem( NULL );
        break;

    case ID_POPUP_PCB_DELETE_COTATION:
        DrawPanel->MouseToCursorSchema();
        Delete_Cotation( (COTATION*) GetCurItem(), &dc );
        SetCurItem( NULL );
        break;

    case ID_POPUP_PCB_EDIT_COTATION:
        Install_Edit_Cotation( (COTATION*) GetCurItem(), &dc, pos );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DELETE_DRAWING:
        Delete_Segment_Edge( (DRAWSEGMENT*) GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DELETE_MARKER:
        RemoveStruct( GetCurItem(), &dc );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_DELETE_DRAWING_LAYER:
        Delete_Drawings_All_Layer( (DRAWSEGMENT*) GetCurItem(), &dc );
        SetCurItem( NULL );
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_EDIT_DRAWING:
        InstallGraphicItemPropertiesDialog( (DRAWSEGMENT*)GetCurItem(), &dc);
        DrawPanel->MouseToCursorSchema();
        break;

    case ID_POPUP_PCB_MOVE_DRAWING_REQUEST:
        DrawPanel->MouseToCursorSchema();
        Start_Move_DrawItem( (DRAWSEGMENT*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_STOP_CURRENT_DRAWING:
        DrawPanel->MouseToCursorSchema();
        if( GetCurItem() && (GetCurItem()->m_Flags & IS_NEW) )
        {
            End_Edge( (DRAWSEGMENT*) GetCurItem(), &dc );
            SetCurItem( NULL );
        }
        break;

    case ID_POPUP_PCB_STOP_CURRENT_EDGE_ZONE:
        DrawPanel->MouseToCursorSchema();
        if( GetCurItem() && (GetCurItem()->m_Flags & IS_NEW) )
        {
            if( End_Zone( &dc ) )
                SetCurItem( NULL );
        }
        DrawPanel->m_AutoPAN_Request = false;
        break;

    case ID_POPUP_PCB_DELETE_ZONE_LAST_CREATED_CORNER:
        DrawPanel->MouseToCursorSchema();
        if( GetCurItem() && (GetCurItem()->m_Flags & IS_NEW) )
        {
            if( Delete_LastCreatedCorner( &dc ) == 0 )  // No more segment in outline,
                SetCurItem( NULL );
        }
        break;

    case ID_POPUP_PCB_SELECT_WIDTH:
        break;

    case ID_AUX_TOOLBAR_PCB_TRACK_WIDTH:
    {
        int ii = m_SelTrackWidthBox->GetChoice();
        g_DesignSettings.m_CurrentTrackWidth =
            g_DesignSettings.m_TrackWidthHistory[ii];
        DisplayTrackSettings();
        m_SelTrackWidthBox_Changed = false;
        m_SelViaSizeBox_Changed    = false;
        g_DesignSettings.m_UseConnectedTrackWidth = false;
    }
    break;

    case ID_POPUP_PCB_SELECT_WIDTH1:
    case ID_POPUP_PCB_SELECT_WIDTH2:
    case ID_POPUP_PCB_SELECT_WIDTH3:
    case ID_POPUP_PCB_SELECT_WIDTH4:
    case ID_POPUP_PCB_SELECT_WIDTH5:
    case ID_POPUP_PCB_SELECT_WIDTH6:
    case ID_POPUP_PCB_SELECT_WIDTH7:
    case ID_POPUP_PCB_SELECT_WIDTH8:
        DrawPanel->MouseToCursorSchema();
        g_DesignSettings.m_UseConnectedTrackWidth = false;
        {
            int ii = id - ID_POPUP_PCB_SELECT_WIDTH1;
            g_DesignSettings.m_CurrentTrackWidth =
                g_DesignSettings.m_TrackWidthHistory[ii];
            DisplayTrackSettings();
        }
        break;

    case ID_AUX_TOOLBAR_PCB_SELECT_AUTO_WIDTH:
        g_DesignSettings.m_UseConnectedTrackWidth =
            not g_DesignSettings.m_UseConnectedTrackWidth;
        break;

    case ID_POPUP_PCB_SELECT_AUTO_WIDTH:
        DrawPanel->MouseToCursorSchema();
        g_DesignSettings.m_UseConnectedTrackWidth = true;
        break;

    case ID_POPUP_PCB_SELECT_VIASIZE:
        break;

    case ID_AUX_TOOLBAR_PCB_VIA_SIZE:
    {
        int ii = m_SelViaSizeBox->GetChoice();
        g_DesignSettings.m_CurrentViaSize =
            g_DesignSettings.m_ViaSizeHistory[ii];
        DisplayTrackSettings();
        m_SelTrackWidthBox_Changed = false;
        m_SelViaSizeBox_Changed    = false;
    }
    break;

    case ID_POPUP_PCB_SELECT_VIASIZE1:
    case ID_POPUP_PCB_SELECT_VIASIZE2:
    case ID_POPUP_PCB_SELECT_VIASIZE3:
    case ID_POPUP_PCB_SELECT_VIASIZE4:
    case ID_POPUP_PCB_SELECT_VIASIZE5:
    case ID_POPUP_PCB_SELECT_VIASIZE6:
    case ID_POPUP_PCB_SELECT_VIASIZE7:
    case ID_POPUP_PCB_SELECT_VIASIZE8:
    case ID_POPUP_PCB_VIA_EDITING:
    case ID_POPUP_PCB_VIA_HOLE_TO_DEFAULT:
    case ID_POPUP_PCB_VIA_HOLE_TO_VALUE:
    case ID_POPUP_PCB_VIA_HOLE_ENTER_VALUE:
    case ID_POPUP_PCB_VIA_HOLE_EXPORT:
    case ID_POPUP_PCB_VIA_HOLE_RESET_TO_DEFAULT:
    case ID_POPUP_PCB_VIA_HOLE_EXPORT_TO_OTHERS:
        Via_Edit_Control( &dc, id, (SEGVIA*) GetScreen()->GetCurItem() );
        break;

    case ID_POPUP_PCB_MOVE_TRACK_SEGMENT:
        DrawPanel->MouseToCursorSchema();
        Start_MoveOneNodeOrSegment( (TRACK*) GetScreen()->GetCurItem(),
                                   &dc, id );
        break;

    case ID_POPUP_PCB_DRAG_TRACK_SEGMENT:
    case ID_POPUP_PCB_MOVE_TRACK_NODE:
        DrawPanel->MouseToCursorSchema();
        Start_MoveOneNodeOrSegment( (TRACK*) GetScreen()->GetCurItem(),
                                   &dc, id );
        break;

    case ID_POPUP_PCB_DRAG_TRACK_SEGMENT_KEEP_SLOPE:
        DrawPanel->MouseToCursorSchema();
        Start_DragTrackSegmentAndKeepSlope( (TRACK*) GetScreen()->GetCurItem(),
                                           &dc );
        break;

    case ID_POPUP_PCB_BREAK_TRACK:
        DrawPanel->MouseToCursorSchema();
        {
            TRACK*  track = (TRACK*) GetScreen()->GetCurItem();
            wxPoint pos   = GetScreen()->m_Curseur;
            track->Draw( DrawPanel, &dc, GR_XOR );
            TRACK*  newtrack = CreateLockPoint( &pos.x, &pos.y, track, NULL );
            track->Draw( DrawPanel, &dc, GR_XOR );
            newtrack->Draw( DrawPanel, &dc, GR_XOR );
        }
        break;

    case ID_MENU_PCB_CLEAN:
        Clean_Pcb( &dc );
        break;

    case ID_MENU_PCB_SWAP_LAYERS:
        Swap_Layers( event );
        break;

    case ID_POPUP_PCB_AUTOROUTE_GET_AUTOROUTER:
        GlobalRoute( &dc );
        break;

    case ID_POPUP_PCB_AUTOROUTE_GET_AUTOROUTER_DATA:
        ReadAutoroutedTracks( &dc );
        break;

    case ID_PCB_USER_GRID_SETUP:
        InstallGridFrame( pos );
        break;

    case ID_POPUP_PCB_DISPLAY_FOOTPRINT_DOC:
    {
        wxConfig* cfg = wxGetApp().m_EDA_CommonConfig;
        cfg->Read( wxT( "module_doc_file" ), g_DocModulesFileName );
        GetAssociatedDocument( this, g_DocModulesFileName, &wxGetApp().GetLibraryPathList() );
    }
    break;

    case ID_MENU_ARCHIVE_NEW_MODULES:
        Archive_Modules( wxEmptyString, true );
        break;

    case ID_MENU_ARCHIVE_ALL_MODULES:
        Archive_Modules( wxEmptyString, false );
        break;

    default:
        DisplayError( this,
                      wxT( "WinEDA_PcbFrame::Process_Special_Functions() id error" ) );
        break;
    }

    SetToolbars();
    DrawPanel->CursorOn( &dc );
    DrawPanel->m_IgnoreMouseEvents = false;
}


/****************************************************************/
static void Process_Move_Item( WinEDA_PcbFrame* frame,
                               EDA_BaseStruct* DrawStruct, wxDC* DC )
/****************************************************************/
{
    if( DrawStruct == NULL )
        return;

    frame->DrawPanel->MouseToCursorSchema();

    switch( DrawStruct->Type() )
    {
    case  TYPE_TEXTE:
        frame->StartMoveTextePcb( (TEXTE_PCB*) DrawStruct, DC );
        break;

    default:
        wxString msg;
        msg.Printf(
            wxT( "WinEDA_PcbFrame::Move_Item Error: Bad DrawType %d" ),
            DrawStruct->Type() );
        DisplayError( frame, msg );
        break;
    }
}


/***************************************************************/
void WinEDA_PcbFrame::RemoveStruct( BOARD_ITEM* Item, wxDC* DC )
/***************************************************************/
{
    if( Item == NULL )
        return;

    switch( Item->Type() )
    {
    case TYPE_MODULE:
        Delete_Module( (MODULE*) Item, DC, true );
        break;

    case TYPE_COTATION:
        Delete_Cotation( (COTATION*) Item, DC );
        break;

    case TYPE_MIRE:
        Delete_Mire( (MIREPCB*) Item, DC );
        break;

    case TYPE_DRAWSEGMENT:
        Delete_Segment_Edge( (DRAWSEGMENT*) Item, DC );
        break;

    case TYPE_TEXTE:
        Delete_Texte_Pcb( (TEXTE_PCB*) Item, DC );
        break;

    case TYPE_TRACK:
        Delete_Track( DC, (TRACK*) Item );
        break;

    case TYPE_VIA:
        Delete_Segment( DC, (TRACK*) Item );
        break;

    case TYPE_ZONE:
        Delete_Zone_Fill( DC, (SEGZONE*) Item );
        break;

    case TYPE_ZONE_EDGE_CORNER:
        Remove_Zone_Corner( DC, (ZONE_CONTAINER*) Item );
        SetCurItem( NULL );
        break;

    case TYPE_ZONE_CONTAINER:
        {
        SetCurItem( NULL );
        int netcode = ((ZONE_CONTAINER*) Item)->GetNet();
        Delete_Zone_Contour( DC, (ZONE_CONTAINER*) Item );
        test_1_net_connexion( NULL, netcode );
        GetBoard()->DisplayInfo(this );
        }
        break;

    case TYPE_MARKER:
        if( Item == GetCurItem() )
            SetCurItem( NULL );
        ( (MARKER*) Item )->Draw( DrawPanel, DC, GR_XOR );

        // delete the marker, and free memory.  Don't use undelete stack.
        GetBoard()->Delete( Item );
        break;

    case TYPE_PAD:
    case TYPE_TEXTE_MODULE:
    case TYPE_EDGE_MODULE:
        break;

    case TYPE_NOT_INIT:
    case TYPE_PCB:
    default:
    {
        wxString Line;
        Line.Printf( wxT( "Remove: StructType %d Inattendu" ),
                    Item->Type() );
        DisplayError( this, Line );
    }
    break;
    }
}


/****************************************************************/
void WinEDA_PcbFrame::SwitchLayer( wxDC* DC, int layer )
/*****************************************************************/
{
    int preslayer = GetScreen()->m_Active_Layer;

    // Check if the specified layer matches the present layer
    if( layer == preslayer )
        return;

    // Copper layers cannot be selected unconditionally; how many
    // of those layers are currently enabled needs to be checked.
    if( (layer >= FIRST_COPPER_LAYER) && (layer <= LAST_COPPER_LAYER) )
    {
        // If only one copper layer is enabled, the only such layer
        // that can be selected to is the "Copper" layer (so the
        // selection of any other copper layer is disregarded).
        if( GetBoard()->m_BoardSettings->m_CopperLayerCount < 2 )
        {
            if( layer != COPPER_LAYER_N )
            {
                // Uncomment following command (and line 17) to beep
                // the speaker. (Doing that would provide feedback to
                // the user that the (layer-switching) command has been
                // "acknowledged", but is unable to be acted upon.)
//              wxBell();
                return;
            }
        }
        // If more than one copper layer is enabled, the "Copper"
        // and "Component" layers can be selected, but the total
        // number of copper layers determines which internal
        // layers are also capable of being selected.
        else
        {
            if( (layer != COPPER_LAYER_N) && (layer != LAYER_CMP_N)
               && (layer >= GetBoard()->m_BoardSettings->m_CopperLayerCount - 1) )
            {
                // Uncomment following command (and line 17) to beep
                // the speaker. (Doing that would provide feedback to
                // the user that the (layer-switching) command has been
                // "acknowledged", but is unable to be acted upon.)
//              wxBell();
                return;
            }
        }

        EDA_BaseStruct* current = GetScreen()->GetCurItem();

        // See if we are drawing a segment; if so, add a via?
        if( m_ID_current_state == ID_TRACK_BUTT && current != NULL )
        {
            if( current->Type() == TYPE_TRACK && (current->m_Flags & IS_NEW) )
            {
                // Want to set the routing layers so that it switches properly -
                // see the implementation of Other_Layer_Route - the working
                // layer is used to 'start' the via and set the layer masks appropriately.
                GetScreen()->m_Route_Layer_TOP    = preslayer;
                GetScreen()->m_Route_Layer_BOTTOM = layer;
                GetScreen()->m_Active_Layer = preslayer;

                if( Other_Layer_Route( (TRACK*) GetScreen()->GetCurItem(), DC ) )
                {
                    if( DisplayOpt.ContrastModeDisplay )
                        GetScreen()->SetRefreshReq();
                }

                // if the via was allowed by DRC, then the layer swap has already
                // been done by Other_Layer_Route(). if via not allowed, then
                // return now so assignment to m_Active_Layer below doesn't happen.
                return;
            }
        }
    }

    // Is yet more checking required? E.g. when the layer to be selected
    // is a non-copper layer, or when switching between a copper layer
    // and a non-copper layer, or vice-versa?
    // ...

    GetScreen()->m_Active_Layer = layer;

    if( DisplayOpt.ContrastModeDisplay )
        GetScreen()->SetRefreshReq();
}