Bitmaps for text input and display?

Hi all.

I'd like to write a function that uses bitmap images for text display instead of system fonts. Has anyone around here done this before? Any ideas on how to best go about it?

With events: http://www.scirra.com/FORUM/suggestionsprite-font_topic44315_post277605.html#277605

With the spritefont plugin: http://www.scirra.com/forum/plugin-spritefont-28th-august-2012_topic45876.html

Thanks :) Checking it out now.