Proper way to remove a child attached to a cell in a GtkSheet?

	I have a situation where I use gtk_sheet_attach() to attach a child (an
optionMenu, in this case) to a cell in a gtkSheet.  Later on, I want to
attach a different child to this cell.

	I have studied the gtk_sheet_attach() code, and note that it builds up
a linked list of children, one for each call.  This makes sense, because
you will often want multiple children attached to a cell, but in my case
this is not what I want -- I want to destroy the prior attached child,
and then attach a new one.

	I could always call gtk_widget_destroy on the child, and then go behind
the scenes and fix up the pointer in the gtkSheet struct myself, but
this messy and error-prone.  

	What is the proper way within GtkExtra to delete (and destroy) a child
that has been attached to a gtkSheet so I can then attach a different
one?

	Sorry for all the rapid-fire questions, Adrian -- but, I'm making good
progress using the new gtkextra-2!  It appears to be more stable (except
for the microscopic text problem I posted about earlier that still has
me puzzled), and the API changes provide for more consistency across the
various parts of the system.  

	Thanks for continuing to drive this forward to a proper 1.0 release!

-Al





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