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  if GetLastError=ERROR_ALREADY_EXISTS then
  begin
    showmessage('Pech ghabt, läuft scho!');
    Halt;
  end;					

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  if GetLastError=ERROR_ALREADY_EXISTS then
  begin
    h := findwindowbytitle('fenstername deines programmes');
    setforeground(h);
    Halt;
  end;					

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function FindWindowByTitle(WindowTitle: String): Hwnd;
var
  NextHandle: HWND;
  NextTitle: array[0..255] of Char;
begin
  NextHandle := GetWindow(Application.Handle, GW_HWNDFIRST);
  while NextHandle > 0 do
  begin
    GetWindowText(NextHandle, NextTitle, 255);
    if pos(WindowTitle, StrPas(NextTitle)) <> 0 then
    begin
      Result := NextHandle;
      Exit;
    end
    else
      NextHandle := GetWindow(NextHandle, GW_HWNDNEXT);
    end;
  Result := 0;
end;					

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if IsIconic(Handle) then ShowWindow(Handle, SW_RESTORE)
else SetForegroundWindow(Handle);					

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if IsIconic(Handle) then