Based on your inventory of components in your demo, the skin manager is missing?
unit Unit2;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ExtCtrls, sPanel, Vcl.ComCtrls, sListView, sSplitter, sTreeView;
type
TForm2 = class(TForm)
sTreeView1: TsTreeView;
sSplitter1: TsSplitter;
sListView1: TsListView;
GapPanel: TsPanel;
BottomPanel: TsPanel;
private
{ Private-Deklarationen }
public
{ Public-Deklarationen }
end;
var
Form2: TForm2;
implementation
{$R *.dfm}
end.