[badmadevil]

Hi,
I'm a newbie in programming, especially gui-coding.
I'm implementing a GUI based SNUSP interpreter using DFL, similar to this javascript web version:
http://www.quirkster.com/snusp/snusp-js.html

The problem is to, on a textbox, highlight the char the current source code pointers pointed at (eg. x-th char, y-th line, zero-base).

The methods I can think of (may be naive):
A) use drawText & drawTextDisabled ;
B) make the text background color transparent (or do nothing during textbox's onPaintBackground ?), then draw a filled box on window behind the textbox.

The text font will be fixed-size monospaced.

A sub-problem is to locate the target char position.

Some example code is much appreciated, thank you.

[Chris Miller]

If you use a RichTextBox you can change the background color of different ranges of text. The newer snapshots contain extra methods to work with the positions of the characters, for example getCharIndexFromPosition from the base class TextBoxBase.

[badmadevil]