InputBox com Data

function InputBoxData(ACaption, APrompt : string): string;
var
  Form: TForm;
  Prompt: TLabel;
  Edit : TMaskEdit;
  DialogUnits: TPoint;
  ButtonTop, ButtonWidth, ButtonHeight: Integer;
  Value: string;
  I: Integer;
  Buffer: array[0..51] of Char;
begin
  Result := ´´;
  Form := TForm.Create(Application);
  with Form do
  try
    Canvas.Font := Font;
    for I := 0 to 25 do Buffer[I] := Chr(I + Ord(´A´));
    for I := 0 to 25 do Buffer[I + 26] := Chr(I + Ord(´a´));
    GetTextExtentPoint(Canvas.Handle, Buffer, 52, TSize(DialogUnits));
    DialogUnits.X := DialogUnits.X div 52;
    BorderStyle := bsDialog;
    Caption := ACaption;
    ClientWidth := MulDiv(180, DialogUnits.X, 4);
    ClientHeight := MulDiv(63, DialogUnits.Y, 8);
    Position := poScreenCenter;
    Prompt := TLabel.Create(Form);
    with Prompt do
    begin
      Parent := Form;
      AutoSize := True;
      Left := MulDiv(8, DialogUnits.X, 4);
      Top := MulDiv(8, DialogUnits.Y, 8);
      Caption := APrompt;
    end;
    Edit := TMaskEdit.Create(Form);
    with Edit do
    begin
      Parent := Form;
      Left := Prompt.Left;
      Top := MulDiv(19, DialogUnits.Y, 8);
      Width := MulDiv(164, DialogUnits.X, 4);
      MaxLength := 255;
      EditMask := ´!99/99/0099;1; ´;
      SelectAll;
    end;
    ButtonTop := MulDiv(41, DialogUnits.Y, 8);
    ButtonWidth := MulDiv(50, DialogUnits.X, 4);
    ButtonHeight := MulDiv(14, DialogUnits.Y, 8);
    with TButton.Create(Form) do
    begin
      Parent := Form;
      Caption := ´OK´;
      ModalResult := mrOk;
      Default := True;
      SetBounds(MulDiv(38, DialogUnits.X, 4),ButtonTop, ButtonWidth,ButtonHeight);
    end;
    with TButton.Create(Form) do
    begin
      Parent := Form;
      Caption := ´Cancel´;
      ModalResult := mrCancel;
      Cancel := True;
      SetBounds(MulDiv(92, DialogUnits.X, 4),ButtonTop, ButtonWidth,ButtonHeight);
    end;
    if ShowModal = mrOk then
    begin
      Value := Edit.Text;
      Result := Value;
    end;
  finally
    Form.Free;
    Form:=nil;  
  end;
end;