Activer/désactiver/cacher/montrer la barre des tâches

var
HTaskbar : HWND;

begin
HTaskBar:=FindWindow('Shell_TrayWnd',nil);

EnableWindow(HTaskBar,False); //Disable the taskbar
EnableWindow(HTaskBar,True); //Enable the taskbar
ShowWindow(HTaskbar,SW_HIDE); //Hide the taskbar
ShowWindow(HTaskbar,SW_SHOW); //Show the taskbar

end;