2000-12-20  Jody Goldberg <jgoldberg@home.com>

	* src/workbook-control-gui.c (insert_bonobo_object) : utility routine
	  to create objects and to catch errors.
	(cb_insert_bonobo_object) : used here.
	(select_component_id) : and here.

	* src/sheet-object-bonobo.c (sheet_object_bonobo_set_object_iid) :
	  handle object creation failure.

	* src/sheet-object.c (sheet_object_destroy) : Handle the destruction
	  of objects before they are attached to a sheet.