Funny behaviour in gtk_clist_unselect_all()

[Dave Cole <dave dccs com au>]

While trying to track down a bug in my application, I noticed
something really strange about gtk_clist_unselect_all() for
GTK_SELECTION_BROWSE lists.

In the process of unselecting all elements in the list, my
"select_row" handler is called with column = -1.  When you do a browse
select with the clist, the "select_row" signal is also sent with
column = -1.

How do I tell the two signals apart?

Why is my "select_row" handler being called during
gtk_clist_unselect_all() anyway?

I noticed that in gtkclist.c:real_unselect_all() for
GTK_SELECTION_BROWSE, the function actually calls

        select_row (clist, clist->focus_row, -1, NULL);

to perform the unselect all.

I am using gtk-1.1.2.

- Dave

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