status.i4.v = field_window_set_exclusive_c(window_id.i2.v)

	This routine will disable all interrupt callback fields which were
	created by earlier calls to window_field_create_c which are not in
	the requested window.  This action can be reversed by a subsequent
	call to field_window_restore_exclusive.

	window_id	window ID
			(use WMNGR_BACKGROUND for the background window
			 or WMNGR_INVALID_ID to enable all windows)

	This function returns status values as follows:

	CBS_NO_SUCH		requested window has no fields defined
	WMNGR_INVALID_ID	no previously selected window (success)
	otherwise		previously selected window ID

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	field_window_restore_exclusive, window_field_disable_all_occluded,
	window_field_enable_all_occluded, window_field_restore_all_occluded,
	window_field_disable_all, window_field_enable_all,
	window_field_disable_c, window_field_enable_c, window_field_create_c,
	window_field_add_callback_c, window_field_delete_callback_c,
	window_field_delete_c, window_field_init_c, field_window_delete_c

	C/C++ usage:

	short	window_id;
	int	status;

	status = field_window_set_exclusive_c(window_id);