It's new in KDE 3.3
But I had a look at my system and it looks like all the control panel applet does is edit ~/.gtkrc-2.0. So open it up and add (or replace):
Code:
style "user-font"
{
font_name="Bitstream Vera Sans 9"
}
widget_class "*" style "user-font"
gtk-font-name="Bitstream Vera Sans 9"
The entire file (for me) looks like this:
Code:
# This file was written by KDE
# You can edit it in the KDE control center, under "GTK styles and fonts"
include "/usr/share/themes/Qt/gtk-2.0/gtkrc"
style "user-font"
{
font_name="Bitstream Vera Sans 9"
}
widget_class "*" style "user-font"
gtk-font-name="Bitstream Vera Sans 9"