menu-simple.py: fixed lay-out

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

diff --git a/Demo/tkinter/matt/bind-w-mult-calls-p-type.py b/Demo/tkinter/matt/bind-w-mult-calls-p-type.py
new file mode 100644 (file)
index 0000000..62beb09
--- /dev/null
+++ b/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.

diff --git a/Demo/tkinter/matt/menu-simple.py b/Demo/tkinter/matt/menu-simple.py
index a1fc2fbad7f69d0d2df94bda7fc2a9e64250266f..1f46e2116ae852d6f7d521547f1b002830f26dbc 100644 (file)
--- a/Demo/tkinter/matt/menu-simple.py
+++ b/Demo/tkinter/matt/menu-simple.py
@@ -19,8 +19,8 @@ from Tkinter import *
 # | New...         |
 # | Open...        |
 # | Print          |
-# |                |  <-------- This is a MENU. The lines of text in the menu are
-# |                |                            MENU ENTRIES
+# |                |  <------ This is a MENU. The lines of text in the menu are
+# |                |                          MENU ENTRIES
 # |                +---------------+
 # | Open Files >   | file1         |               
 # |                | file2         |