window_size(_c)

	status.i4.v = window_size(window_id.i2.r, num_rows.i4.r,
				  num_columns.i4.r [,interior_only.i4.v])

	status.i4.v = window_size_c(window_id.i2.v, num_rows.i4.r,
				    num_columns.i4.r [,interior_only.i4.v])

	This routine returns the size of the window indicated by
	"window_id".

	window_id	window ID (use WMNGR_BACKGROUND for background window)
	num_rows	returned number of rows
			(can be defaulted by passing a value of NULL)
	num_columns	returned number of columns
			(can be defaulted by passing a value of NULL)
	[interior_only]	portion of window to return size for
			(TRUE -> interior only (default),
			 FALSE -> entire window including borders and
				  scroll bars)

	This function returns ACNET status values as follows:

	OK			success
	CBS_NO_WINDOW		requested window does not exist
	CBS_MEMFAIL		dynamic memory allocation failure

	This function requires the following include files:

	cnsparam_h, cbslib_h, acnet_errors_h

	Related functions:

	window_coordinate_limits_c, window_coords(_c),
	window_read_scroll_region_c, window_set_scroll_region_c,
	window_construct(_c), window_resize, window_set_size(_c),
	window_read_background_size, intro_tv_windows

	C/C++ usage:

	short	window_id;
	int	status;
	int	num_rows;
	int	num_columns;
	int	interior_only = TRUE;

	status = window_size_c(window_id,&num_rows,&num_columns,interior_only);