wn_read_display_size

	status.i4.v = wn_read_display_size([height.i4.r] [,width.i4.r])

	This routine allows the calling program to read the size of
	the display it's running on.

	[height]	returned height of the display in pixels
	[width]		returned width of the display in pixels

	This function returns ACNET status values as follows:

	OK			success
	CBS_NO_SUCH		calling program has no display
	CBS_GENERIC_ERROR	could not read display information

	This function requires the following include files:

	cbslib_h

	Related functions:

	wn_read_background_size, wn_set_background_size_c,
	wn_read_background_format, wn_set_background_format_c,
	wn_screen_init(_c), intro_graphics_windows

	C/C++ usage:

	int	status;
	int	height;
	int	width;

	status = wn_read_display_size(&height,&width);