我想按照ocaml manual来画东西。但是这是Ocaml顶层的一个奇怪的回应。任何人看到为什么谢谢。Ocaml的Graphics.open_graph不起作用
# #load "graphics.cma";;
# Graphics.open_graph "foo:0";;
_X11TransSocketINETConnect() can't get address for foo:6000: nodename nor servname provided, or not known
Exception: Graphics.Graphic_failure "Cannot open display foo:0".