Как минимизиpовать все запущеные окна

(* Hачало (MINIMIZE.DPR) *)

{$APPTYPE CONSOLE}
program Minimize;
uses Windows, Messages;
var
  Count: integer;

function EnumProc(WinHandle: HWnd; Param: LongInt): Boolean; stdcall;
begin

  if (GetParent(WinHandle) = 0) and (not IsIconic(WinHandle)) and
    (IsWindowVisible(WinHandle)) then
  begin
    PostMessage(WinHandle, WM_SYSCOMMAND, SC_MINIMIZE, 0);
    Inc(Count);
  end;
  EnumProc := TRUE;
end;

begin

  Count := 0;
  EnumWindows(@EnumProc, 0);
  Writeln('Minimized:', Count, ' windows');
end.

(* конец (MINIMIZE.DPR) *)