initial checkin of www Tk examples

Demo/tkinter/www/www8.py

@@ -0,0 +1,43 @@
+#! /usr/local/bin/python
+
+# www8.py -- display the contents of a URL in a Text widget
+# - set window title
+# - make window resizable
+# - update display while reading
+# - vertical scroll bar
+
+import sys
+import urllib
+from Tkinter import *
+
+def main():
+	if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
+		print "Usage:", sys.argv[0], "url"
+		sys.exit(2)
+	url = sys.argv[1]
+	fp = urllib.urlopen(url)
+
+	# Create root window
+	root = Tk()
+	root.title(url)
+	root.minsize(1, 1)
+
+	# The Scrollbar *must* be created first -- this is magic for me :-(
+	vbar = Scrollbar(root)
+	vbar.pack({'fill': 'y', 'side': 'right'})
+	text = Text(root, {'yscrollcommand': (vbar, 'set')})
+	text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
+
+	# Link Text widget and Scrollbar -- this is magic for you :-)
+	##text['yscrollcommand'] = (vbar, 'set')
+	vbar['command'] = (text, 'yview')
+
+	while 1:
+		line = fp.readline()
+		if not line: break
+		text.insert('end', line)
+		root.update_idletasks()
+
+	root.mainloop()
+
+main()