Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

 function LeftPad(S: string; Ch: Char; Len: Integer): string;
 var
   RestLen: Integer;
 begin
   Result  := S;
   RestLen := Len - Length(s);
   if RestLen < 1 then Exit;
   Result := S + StringOfChar(Ch, RestLen);
 end;

 function RightPad(S: string; Ch: Char; Len: Integer): string;
 var
   RestLen: Integer;
 begin
   Result  := S;
   RestLen := Len - Length(s);
   if RestLen < 1 then Exit;
   Result := StringOfChar(Ch, RestLen) + S;
 end;

 {Beispiel / Example}

 procedure TForm1.Button1Click(Sender: TObject);
 begin
   Edit1.Text := Rightpad(Edit2.Text, '-', 30);
 end;