widgets/callbacks

[Matt Hillebrand <hill9361 uidaho edu>]

I cannot figure out how to access widgets from within callback
functions. For example, how do I make a second window appear when a button
on the main window is clicked? 

Also, I would like to access widgets such as the scrolled window's labels
of one window from callbacks associated with buttons on other windows.

Thanks!

Matthew P. Hillebrand