Grid в виде дерева

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ExtCtrls, Vcl.ComCtrls, cxGraphics,
  cxControls, cxLookAndFeels, cxLookAndFeelPainters, cxClasses, cxCustomData,
  cxStyles, cxEdit, dxSkinsCore, dxSkinBlack, dxSkinBlue, dxSkinBlueprint,
  dxSkinCaramel, dxSkinCoffee, dxSkinDarkRoom, dxSkinDarkSide,
  dxSkinDevExpressDarkStyle, dxSkinDevExpressStyle, dxSkinFoggy,
  dxSkinGlassOceans, dxSkinHighContrast, dxSkiniMaginary, dxSkinLilian,
  dxSkinLiquidSky, dxSkinLondonLiquidSky, dxSkinMcSkin, dxSkinMoneyTwins,
  dxSkinOffice2007Black, dxSkinOffice2007Blue, dxSkinOffice2007Green,
  dxSkinOffice2007Pink, dxSkinOffice2007Silver, dxSkinOffice2010Black,
  dxSkinOffice2010Blue, dxSkinOffice2010Silver, dxSkinPumpkin, dxSkinSeven,
  dxSkinSevenClassic, dxSkinSharp, dxSkinSharpPlus, dxSkinSilver,
  dxSkinSpringTime, dxSkinStardust, dxSkinSummer2008, dxSkinTheAsphaltWorld,
  dxSkinsDefaultPainters, dxSkinValentine, dxSkinVS2010, dxSkinWhiteprint,
  dxSkinXmas2008Blue, cxCustomPivotGrid, cxDBPivotGrid, Vcl.StdCtrls,   cxExportPivotGridLink,
  cxCalc, dxPrnDev, Vcl.Buttons, dxPrnDlg, dxPSGlbl, dxPSUtl, dxPSEngn, dxPrnPg,
  dxBkgnd, dxWrap, dxPSCompsProvider, dxPSFillPatterns, dxPSEdgePatterns,
  dxPSPDFExportCore, dxPSPDFExport, cxDrawTextUtils, dxSkinscxPCPainter,
  dxPSPrVwStd, dxPSPrVwAdv, dxPSPrVwRibbon, dxPScxPageControlProducer,
  dxPScxEditorProducers, dxPScxExtEditorProducers, dxSkinsdxBarPainter,
  dxSkinsdxRibbonPainter,   dxPSCore, dxPScxPivotGridLnk,   Vcl.XPMan,  inifiles, dxPScxCommon,
  cxContainer, cxGroupBox;