window_next_scroll_row_c

	next_row.i4.v = window_next_scroll_row_c(window_id.i2.v, row.i4.v
						 [,increment.i4.v])

	This routine returns the row number for the next row in a window's
	scroll buffer.

	window_id	ID of desired window
	row		window row number
	[increment]	row increment (default is 1)

	This function returns status values as follows:

	WMNGR_INVARG		invalid window ID, row, or increment
	WMNGR_NO_WINDOW		window doesn't exist
	otherwise		next row

	This function requires the following include files:

	cbslib_h

	Related functions:

	window_is_in_scroll_buffer_c, window_row_to_entry_c,
	window_entry_to_row_c, window_current_row_c, window_scroll(_c),
	window_physical_column_c, window_virtual_column_c, window_hscroll_c

	C/C++ usage:

	short	window_id;
	int	next_row;
	int	row = 5;
	int	increment = 1;

	next_row = window_next_scroll_row_c(window_id,row,increment);