Albert,

I still need time for understanding your idea. I said, it's not simple for me.

Meanwhile, I received lots of other ideas, on which I have to spend time, too. And, of course, I have my current list of tasks to do.

So, please, give me a little more time.

>>
>> I've just tried. It's not convenient to append 0 to the end, because cursor goes automatically to the next line. Say, I type 1, then I see 1000 with cursor on another line.
>
>So, don't append zeroes. I left it up to you to manage the caret.
>
>>
>> I also don't like to define class in a program. I always use class designer instead. I understand, that sometimes it's only way to define class in a program, but I prefer to do it visually.
>
>Is it so hard to cut and paste into the class designer?
>
>The important lesson to learn is the way I used delegation to hang on customizable behavior onto the control.