Resizing a rich text box to eliminate scroll bars

[Shane]

We use non-standard buttons in our app (Ok, Cancel, ...) The MsgBox
uses the standard buttons, which looks inconsistent. I need to make a
MsgBox replacement.

I could use a text box for the message, and simply use the graphics
measurestring method to get the height and width of the strings. I
could calculate the necessary height and width needed for the text box
control.

Since I have to take the time to develop a new form, I'd like to
greatly enhance the appearance of my new form by using a rich text box
instead of a text box control. I can format bold, color strings,
different size fonts, bullets, ...

How do I determine the needed dimensions of the rich text box with
eliminating the horizontal and vertical scroll bars?

Thanks.
Shane