wn_switch_get_screen_c

	status.i4.v = wn_switch_get_screen_c(switch_id.i4.v, screen.i4.r)

	This routine returns the graphics screen where a switch was created
	by an earlier call to wn_switch_create_c.

	switch_id	ID of desired switch
			(returned by prior call to wn_switch_create_c)
			(Note:  If a negated window ID is passed, all switches
			 in that window will be disabled.)
	screen		returned graphics screen where the switch was created
			(only meaninful in a PA environment)
			(GXPA_1 -> number "1" graphics screen (default),
			 GXPA_2 -> number "2" graphics screen,
			 GXPA_NONE -> no graphics screen)

	This function returns ACNET status values as follows:

	OK			success
	CBS_NO_SUCH		switch or window does not exist

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	wn_switch_create_c, wn_switch_delete_c, wn_switch_window_delete_c,
	wn_switch_read_c, wn_switch_pressed, wn_switch_set_state_c,
	wn_switch_relabel_c, wn_switch_redraw_c, wn_switch_enable_c,
	wn_switch_disable_c

	C/C++ usage:

	int	status;
	int	switch_id;
	int	screen;

	status = wn_switch_get_screen_c(switch_id,&screen);