Taskbar Autohide

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    function IsTaskbarAutoHideOn: boolean;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

uses ShellAPI;

function TForm1.IsTaskbarAutoHideOn : boolean;
var
   ABData : TAppBarData;
begin
     ABData.cbSize := sizeof(ABData);
     Result := (SHAppBarMessage(ABM_GETSTATE, ABData) and ABS_AUTOHIDE) > 0;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
     if IsTaskbarAutoHideOn then
        ShowMessage('Taskbar autohide')
     else ShowMessage('Taskbar tidak autohide')
end;

end.