def DoSelection(self, event):
from posixpath import join
import string
lb = event.widget
field = self.fileNameEntry
field.delete(0, Tkinter.AtEnd())
field.insert(0, join(self.cwd_print(), lb.get(lb.nearest(event.y))))
lb.select_clear(0, "end")
lb.select_anchor(lb.nearest(event.y))
# ------------------------------------
# Get some help from the file
# this could be the __docs__ string from
# the module, but that would require us to load it
# and that seems like not a good idea. Maybe better
# to get data from a text file, or top of .py file
if field.get()[-3:] == ".py" or field.get()[-6:] == ".world":
fp = open(field.get(), "r")
lines = fp.readlines()
stringlines = string.join(lines, '')
fp.close()
else:
stringlines = "Click the 'OK' button to load."
self.helpText.config(state='normal')
self.helpText.delete(1.0, 'end')
self.helpText.insert('end', stringlines)
self.helpText.config(state='disabled')
