calculate line height?

Author

Message

Wayne Edward

Posted: 12/29/2002 15:10:12

I'm working on a text-based editor that uses special text-based

formatting for paragraph borders. For example a paragraph will have a

top and bottom border using ========== or some user specified

character.

I learned that I can create a style component that inherits from

TRVStyle for the new properties and then use the custom-drawing events

to draw the borders. I will set the SpaceBefore and SpaceAfter to make

room for drawn borders.

My question is since I need the editor to look as much like a simple

text file (text borders are automatic) I need the space used for

borders to be the same height as the text line height. How do I

calculate the line height? I want to dynamically calculate the

SpaceBefore and SpaceAfter to get the value of one line height. I

assume it is a little more that what I get from Canvas.TextHeight but

I don't know how to get the exact value.

Any ideas?