[Tutor] Binding the mouse to a list using Tk.

[BELSEY, Dylan]

    Only had a brief look at your problem, but I believe that the Tkinter
widgets Listbox and ScrolledListBox may be what you need (and save you quite
a bit of time).  You can use the Listbox methods from within the
ScrolledListbox object as well.  You could then possibly associate a
function with your button which gets the currently selected item.
getcurselection() returns the text while the curselection() will return the
index.
    A lot of this is quite similar to what your code has proposed but using
the built-in widgets and their functions may shed some light on an easier
solution.
 
    HTH,
        Dylan
 

-----Original Message-----
From: andy surany [mailto:mongo57a@comcast.net]
Sent: Tuesday, 15 October 2002 04:20
To: tutor@python.org
Subject: [Tutor] Binding the mouse to a list using Tk.


Hi all!

What I want to do is use a button to capture the position/value of the

selected item in a scrolled list. So the user selects the item in the list

with a single click of the left mouse button and then clicks a button.

Should be easy - I'm just not getting it......

 

I'm using Tkinter. I Created a class (ScrolledList) for a scrolled list
which works fine. Created

another class (aaaaa) which populates the list - and it works fine. Created

a handler under ScrolledList (handleList) which should trap the results of

the bind (makeWidgets). Right now, all I'm trying to do is just print out

the value (just testing..) - but my logic is incorrect (actually, I think

that the logic may be correct - it's just in the wrong place...).

Here is a synopsis of the code. The "...." is non-relevant code which I have
removed for simplification.

 

class ScrolledList(Frame):

    def __init__(self, options, parent=None):

        ........

        self.makeWidgets(options)

    def handleList(self, event):

        index = self.listbox.curselection()

        label = self.listbox.get(index)

        print "label is ", label

    def makeWidgets(self, options):

        ........

        list.bind('<Button-1>', self.handleList) 

Class aaaaa

    def update_strategy_code(self):

        ..........

        ScrolledList(options)

        Button(self, text='Update',

        command=self.edit_strategy_code).pack(side=LEFT)

    def edit_strategy_code(self):

        label=self.listbox.get(ACTIVE)

        print 'info2=',label

 TIA!

Andy (mongo57a@comcast.net)