def spawn title, mode, opts={}
raise ArgumentError, "title must be a string" unless title.is_a? String
realtitle = title
num = 2
while @name_map.member? realtitle
realtitle = "#{title} <#{num}>"
num += 1
end
width = opts[:width] || Ncurses.cols
height = opts[:height] || Ncurses.rows - 1
w = Ncurses.stdscr
b = Buffer.new w, mode, width, height, :title => realtitle, :force_to_top => opts[:force_to_top], :system => opts[:system]
mode.buffer = b
@name_map[realtitle] = b
@buffers.unshift b
if opts[:hidden]
focus_on b unless @focus_buf
else
raise_to_front b
end
b
end