procedure SetRowNumber(var ASender: TcxGridTableView; AViewInfo: TcxCustomGridIndicatorItemViewInfo; 
  var ACanvas: TcxCanvas; var ADone: boolean); 

uses cxLookAndFeelPainters; 

procedure SetRowNumber(var ASender: TcxGridTableView; AViewInfo: TcxCustomGridIndicatorItemViewInfo; 
  var ACanvas: TcxCanvas; var ADone: boolean); 
var 
  AIndicatorViewInfo: TcxGridIndicatorRowItemViewInfo; 
  ATextRect: TRect; 
  AFont: TFont; 
  AFontTextColor, AColor: TColor; 
begin 
  AFont := ACanvas.Font; 
  AColor := clBtnFace; 
  AFontTextColor := clWindowText ; 
if (AViewInfo is TcxGridIndicatorHeaderItemViewInfo) then begin 
  ATextRect := AViewInfo.Bounds; 
  InflateRect(ATextRect, -1, -1); 
     
   ASender.LookAndFeelPainter.DrawHeader(ACanvas, AViewInfo.Bounds, 
    ATextRect, [], cxBordersAll, cxbsNormal, taCenter, vaCenter, 
    False, False, '序号', AFont, AFontTextColor, AColor); 
    ADone := True; 
  end ; 
  if not (AViewInfo is TcxGridIndicatorRowItemViewInfo) then 
    Exit; 
  ATextRect := AViewInfo.ContentBounds; 
  AIndicatorViewInfo := AViewInfo as TcxGridIndicatorRowItemViewInfo; 
  InflateRect(ATextRect, -1, -1); 
  ASender.LookAndFeelPainter.DrawHeader(ACanvas, AViewInfo.ContentBounds, 
    ATextRect, [], [bBottom, bLeft, bRight], cxbsNormal, taCenter, vaCenter, 
    False, False, IntToStr(AIndicatorViewInfo.GridRecord.Index + 1), 
    AFont, AFontTextColor, AColor); 
  ADone := True; 
ASender.LookAndFeelPainter.DrawIndicatorImage(ACanvas, ATextRect, AIndicatorViewInfo.IndicatorKind); 
end;

class procedure TcxCustomLookAndFeelPainter.DrawIndicatorImage(ACanvas: TcxCanvas; 
  const R: TRect; AKind: TcxIndicatorKind); 
var 
  X, Y: Integer; 
begin 
  if AKind = ikNone then Exit; 
  with cxIndicatorImages, R do 
  begin 
    X := (Left + Right - Width);              //靠右 
    Y := (Top + Bottom - Height) div 2;       //居中 
  end; 
  cxIndicatorImages.Draw(ACanvas.Canvas, X, Y, Ord(AKind) - 1); 
end;

 procedure TForm1.cxGrid1DBTableView1CustomDrawIndicatorCell( 
   Sender: TcxGridTableView; ACanvas: TcxCanvas; 
   AViewInfo: TcxCustomGridIndicatorItemViewInfo; var ADone: Boolean); 
 begin 
      SetRowNumber(Sender,AviewInfo,ACanvas,ADone); 
 end;