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type
  TFormState = record
    Size: TRect;
    Visible: Boolean;
    WindowState: TWindowState;
  end;
  TFormStates = Array[FormIndex] of TFormState;
                
procedure SaveLayOut(const aFileName: String);
function TryLoadLayOut(const aFileName: String): Boolean;

implementation

procedure SaveLayOut(const aFileName: String);
var
  F: File of TFormStates;
  States: TFormStates;
  i: FormIndex;
  Frm: PForm;
begin
  for i := 0 to FormAnzahl - 1 do begin
    Frm := GlobalTraffic.Forms[i];
    States[i].Size := Rect(Frm^.Left, Frm^.Top, Frm^.Width, Frm^.Height);
    States[i].Visible := Frm^.Visible;
    States[i].WindowState := Frm^.WindowState;
  end;
  try
    AssignFile(F, aFileName);
    ReWrite(F);
    Write(F, States);
  finally
    CloseFile(F);
  end;
end;

function TryLoadLayOut(const aFileName: String): Boolean;
var
  F: File of TFormStates;
  States: TFormStates;
  i: FormIndex;
  Frm: PForm;
begin
  result := FileExists(aFileName);
  if result then begin
    try
      AssignFile(F, aFileName);
      Reset(F);
      Read(F, States);
    finally
      CloseFile(F);
    end;
    for i := 0 to FormAnzahl - 1 do begin
      Frm := GlobalTraffic.Forms[i];
      Frm^.Left := States[i].Size.Left;
      Frm^.Top := States[i].Size.Top;
      Frm^.Width := States[i].Size.Right;
      Frm^.Height := States[i].Size.Bottom;
      Frm^.Visible := States[i].Visible;
      Frm^.WindowState := States[i].WindowState;
    end;
  end;
end;