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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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# -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
#
# $Id$
#
# Tix Demonstration Program
#
# This sample program is structured in such a way so that it can be
# executed from the Tix demo program "tixwidgets.py": it must have a
# procedure called "RunSample". It should also have the "if" statment
# at the end of this file so that it can be run as a standalone
# program.

# This file demonstrates the use of the tixOptionMenu widget -- you can
# use it for the user to choose from a fixed set of options
#
import Tix

options = {'text':'Plain Text', 'post':'PostScript', 'html':'HTML',
           'tex':'LaTeX', 'rtf':'Rich Text Format'}

def RunSample(w):
    global demo_opt_from, demo_opt_to

    demo_opt_from = Tix.StringVar()
    demo_opt_to = Tix.StringVar()

    top = Tix.Frame(w, bd=1, relief=Tix.RAISED)

    from_file = Tix.OptionMenu(top, label="From File Format : ",
                               variable=demo_opt_from,
                               options = 'label.width  19 label.anchor e menubutton.width 15')

    to_file = Tix.OptionMenu(top, label="To File Format : ",
                             variable=demo_opt_to,
                             options='label.width  19 label.anchor e menubutton.width 15')

    # Add the available options to the two OptionMenu widgets
    #
    # [Hint] You have to add the options first before you set the
    #        global variables "demo_opt_from" and "demo_opt_to". Otherwise
    #        the OptionMenu widget will complain about "unknown options"!
    #
    for opt in options.keys():
        from_file.add_command(opt, label=options[opt])
        to_file.add_command(opt, label=options[opt])

    demo_opt_from.set('html')
    demo_opt_to.set('post')

    from_file.pack(side=Tix.TOP, anchor=Tix.W, pady=3, padx=6)
    to_file.pack(side=Tix.TOP, anchor=Tix.W, pady=3, padx=6)

    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
    box.add('ok', text='Ok', underline=0, width=6,
            command=lambda w=w: ok_command(w))
    box.add('cancel', text='Cancel', underline=0, width=6,
            command=lambda w=w: w.destroy())
    box.pack(side=Tix.BOTTOM, fill=Tix.X)
    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)

def ok_command(w):
    # tixDemo:Status "Convert file from %s to %s" % ( demo_opt_from.get(), demo_opt_to.get())
    w.destroy()

if __name__ == '__main__':
    root = Tix.Tk()
    RunSample(root)
    root.mainloop()

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