strx_fill_c(, num_chars.i4.v, ch.i1.v, color.i4.v)

	This routine fills an XCHAR format string with a specified character
	and color.

	xchar_string	string to fill (array of XCHAR structures)
	num_chars	number of characters in string
	ch		character to fill string with
	color		color attribute of character
			(constants are in 'cnsparam')

	This function requires the following include files:

	cnsparam_h, cns_data_structs_h, cbslib_h

	Related functions:

	strx_fill_color_c, strx_copy_from_string_c, strx_copy_to_string_c,
	strx_to_string_and_colors_c, strx_build_c, strx_is_blank_c,
	strx_find_first_c, strx_find_character_c, strx_length_c,

	C/C++ usage:

	char	ch = BLANK;
	int	num_chars = NUM_CHARS;
	int	color = WHITE;
	XCHAR	xchar_string[NUM_CHARS];