How to check if taskbar autohide feature is enabled

uses
  ShellAPI;

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