Changing axis ticks multiple times?

	OK, so I must be missing something here...   When I first create a
plot, I have correctly connected a custom tick handler, and I get the
results I expect when I call gtk_plot_axis_set_ticks -- my ticks are
generated as I want.

	However, I can never seem to change them again.  I have tried several
things, including repainting the plot and/or the axis widget after
changing my custom tick handler and then again calling
gtk_plot_axis_set_ticks, but the ticks *never* change from the way they
were first generated.

	How can I change the ticks again after they have been set up the first
time, and get the changes to display?  I know there must be a way to do
this, I'm just missing it after several hours of poking through the
gtkextra code.

	Thanks for any help!!

-Al




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