Applying font setting universaly

[Dinesh Nadarajah <dinesh_list sbcglobal net>]

Hi:

I am trying to write a small control-panel like application where I
would like to set the user select a font and have that apply to all the
'already' open applications.

I can write the .gtk2rc file but that affects only apps. that are open
after the file has been written. I want to affect the font setting
immediately.

Thanks in advance.

-D