winbox_c DEPRECATED

	status.i4.v = winbox( wid.i4.v, up_row.i4.v, nrows.i4.v, left_col.i4.v,
 		ncols.i4.v )

	'winbox_c' is a C callable (by value) windowed version of INBOX.

	It will return TRUE if the color TV cursor was in a specifed box the 
	last time the INTYPE routine was called.  The box is specified by a 
	window ID 'wid', a starting row inside the window 'up_row', a number of 
	rows 'nrows', a starting column inside the window 'left_col' and a 
	number of columns 'ncols'.

	'wid' is the window ID of the window to test as returned by
	the WMAKE or 'wmake_c' routine.

	'up_row' and 'left_col' are the row and column within the window. The
	top left character inside the window border is row 1, column 1.