menu-simple.py: fixed lay-out

bind-with-multiple-calls-per-event-type.py: new, or forgot to add earlier

Demo/tkinter/matt/bind-w-mult-calls-p-type.py

@@ -0,0 +1,43 @@
+from Tkinter import *
+import string 
+
+# This program  shows how to use a simple type-in box
+
+class App(Frame):
+    def __init__(self, master=None):
+	Frame.__init__(self, master)
+	self.pack()
+
+	self.entrythingy = Entry()
+	self.entrythingy.pack()
+
+	# and here we get a callback when the user hits return. we could
+	# make the key that triggers the callback anything we wanted to.
+	# other typical options might be <Key-Tab> or <Key> (for anything)
+	self.entrythingy.bind('<Key-Return>', self.print_contents)
+
+	# Note that here is where we bind a completely different callback to 
+	# the same event. We pass "+" here to indicate that we wish to ADD 
+	# this callback to the list associated with this event type. Not specifying "+" would 
+	# simply override whatever callback was defined on this event. 
+	self.entrythingy.bind('<Key-Return>', self.print_something_else, "+")
+
+    def print_contents(self, event):
+	print "hi. contents of entry is now ---->", self.entrythingy.get()
+
+
+    def print_something_else(self, event):
+	print "hi. Now doing something completely different"
+
+
+root = App()
+root.master.title("Foo")
+root.mainloop()
+
+
+
+# secret tip for experts: if you pass *any* non-false value as 
+# the third parameter to bind(), Tkinter.py will accumulate 
+# callbacks instead of overwriting. I use "+" here because that's
+# the Tk notation for getting this sort of behavior. The perfect GUI 
+# interface would use a less obscure notation.

Demo/tkinter/matt/menu-simple.py

@@ -19,7 +19,7 @@ from Tkinter import *
 # | New...         |
 # | Open...        |
 # | Print          |
-# |                |  <-------- This is a MENU. The lines of text in the menu are
+# |                |  <------ This is a MENU. The lines of text in the menu are
 # |                |                          MENU ENTRIES
 # |                +---------------+
 # | Open Files >   | file1         |