window_intersect_c

	intersect.i4.v = window_intersect_c(window_id_1.i2.v, window_id_2.i2.v
					    [,left_column.i4.r] [,top_row.i4.r]
					    [,right_column.i4.r]
					    [,bottom_row.i4.r])

	This routine returns a value of TRUE if the windows indicated
	by "wid_1" and "wid_2" intersect.  It will also optionally
	return the intersecting rectangle in full screen coordinates.

	window_id_1	ID of first window
	window_id_2	ID of second window
	[left_column]	returned left column of the intersection rectangle
			(default is NULL)
	[top_row]	returned top row of the intersection rectangle
			(default is NULL)
	[right_column]	returned right column of the intersection rectangle
			(default is NULL)
	[bottom_row]	returned bottom row of the intersection rectangle
			(default is NULL)

	This function returns status values as follows:

	TRUE			the two windows intersect
	FALSE			the two windows are tiled

	This function requires the following include files:

	cnsparam_h, cbslib_h

	Related functions:

	window_occluded_by(_c), window_occluding(_c), intro_tv_windows

	C/C++ usage:

	short	window_id_1;
	short	window_id_2;
	int	intersect;
	int	left_column;
	int	top_row;
	int	right_column;
	int	bottom_row;

	intersect = window_intersect_c(window_id_1,window_id_2,
				       &left_column,&top_row,
				       &right_column,&bottom_row);