select_field_read_c

	status.i4.v = select_field_read_c(window_id.i2.v, select_id.i4.v,
					  entry_text.i1a.r, entry_index.i4.r)

	This routine returns the current entry for a selection field created
	by an earlier call to select_field_init_c.  If either of the
	returned parameters are not needed, a value of NULL can be passed
	for that argument.

	window_id	ID of desired window (returned from prior call to
			window_construct(_c))
	select_id	ID of selection field type (returned from a prior
			call to select_field_register_c)
	entry_text	returned current entry text
	entry_index	returned current entry index

	This function returns ACNET status values as follows:

	OK			success
	CBS_NO_SUCH		select field does not exist
	CBS_INVARG		invalid select ID passed

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	select_field_init_c, select_field_set_c, select_field_set_by_value_c,
	select_field_update_c, select_field_delete_c, select_field_register_c,
	select_field_enable_c, select_field_disable_c,
	select_field_text_to_id_c, select_field_display_info_c

	C/C++ usage:

	char	entry_text[ENTRY_LENGTH];
	short	window_id = WMNGR_BACKGROUND;
	int	status;
	int	select_id;
	int	entry_index;

	status = select_field_read_c(window_id,select_id,entry_text,
				     &entry_index);