On 2014-01-15 00:53, Rob Ward wrote:
I apologise if I have come to the wrong place here, but 12hrs searching,
plus experimenting, on the WWW for advice on it has not yielded any
successful advice to resolve the issue.
I am am having trouble binding an Entry widget to <Return>
Here is the snippet (butCol is a Frame widget to put buttons,labels and
text entry down LHS)
KS1=StringVar()
KS1.set("Key is ??")
butCol.ks1
=Label(butCol,textvariable=KS1).grid(column=0,row=18,sticky=(N,W))
myKey = [0,2,4,5,7,9,11] #Begin in the key of C
KS2 =StringVar()
KS2.set("C")
butCol.ks2
=Entry(butCol,width=20,textvariable=KS2).grid(column=0,row=19,sticky=(N,W))
The above lines all render correctly, but will not trigger off "entry"
of data at all on <Return>
Adding the following line just crashes.
butCol.ks2.bind("<Return>",chooseKey)
I downloaded the Python 3 package from the recommended site last week to
begin this project (it was previously working OK in Skulptor, but I was
not prepared to develop it any further in that environment, though it
was an excellent starting environment). So I believe the Python
language installed is up todate. I have not previously installed Python
so it should be "clean".
If you could give any direct advice I would be very grateful or if you
can direct me to your best "forum" site maybe I could use that.
One overall observation that has frustrated me is how toi search for
information that relates to *Python3* and the latest *tkinte*r modules.
I kept finding old python or old Tkinter or combinations of both.
Wrorking my way through this was very time consuming and rarely
productive. Is there any advice on how to get the "latest" information
off the WWW?
Cheers, Rob Ward
PS In my state of eternal optimism I have attached the whole file :-)
PPS I have done some OOP in the past but not keen to jump in at the moment.
I doubt it crashes. It's more likely that raises an exception
complaining that 'None' doesn't have a 'bind' attribute.
That's because the .grid method returns None. (So the .pack method.)
Try this:
butCol.ks2 = Entry(butCol, width=20, textvariable=KS2)
butCol.ks2.grid(column=0, row=19, sticky=(N, W))
The same comment applies in a number of other places.
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