[Tutor] ttk menubutton

[Alan Gauld]

On 12/04/2023 06:42, Phil wrote:
> I'm attempting to get the options from a ttk menubutton without a lot of 
> success. The menubutton and it's list of options are displayed but I 
> don't understand the error message.
> 
>          # create a menu
>          self.menu = tk.Menu(self.mainwindow)
>          self.menu.add_command(label="Option 1")
>          self.menu.add_command(label="Option 2")
>          self.menu.add_command(label="Option 3")
> 
>          self.menu_button.bind("<ButtonRelease-1>", 
> self.on_menu_button_release)

What is menu_button?
It's not mentioned in your code sample until the bind call...

BTW I tried this exercise out of interest and couldn't get
the bind() to work. I'm not sure why, I might do some more
experiments later.

However I must ask why you are using bind in this case - its
more common to just attach the event handler to the menu item
when you create it. Like

          self.menu = tk.Menu(self.mainwindow)
          self.menu.add_command(label="Option 1",
                                command=self.on_Option)

Or if you want to use the same handler for multiple items use a lambda
to pass an option:

          self.menu = tk.Menu(self.mainwindow)
          self.menu.add_command(label="Option 1",
                                 command=lambda : self.on_option(1))
          self.menu.add_command(label="Option 2",
                                 command=lambda : self.on_option(2))

def on_option(self, option):
    # do something with option here

But binding should work, I'm just not sure how to make it
do so in a menu.

-- 
Alan G
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