Tkinter menu commands activate when menu is built

[Brad Bollenbach]

[snippity snip snip]

>     This is my first attempt at a program using Tkinter. I'm ok with the
> widgets, geometry managers, frames, etc... but the menu bar is giving me
> grief.

But it's doing what it should. :)

>      According to the documentation 'menu.add_command(label='x',
command=y)'
> should create a dropdown menu entry named 'x' that will activate function
> y() when clicked.

Precisely.

[snip]

> The problem is that the function
> do_stuff() executes when the menu is built (in the program below, it will
> execute 4 times as the root window is being built) rather than when the
> widget is clicked on.
>     Am I missing something basic here?

Yes! :)

[snip irrelevant code]
> connectmenu.add_command(label="Example 1", command=do_stuff(1))
[snip more irrelevant code]

You think you're saying "when Example 1 is clicked, execute do_stuff(1)".
What you're actually doing here is calling do_stuff(1) and assigning the
result (if any) to the keyword parameter "command".

The right way to do this would be:

connectmenu.add_command(label="Example 1", command=do_stuff)


passing the function reference do_stuff (instead of actually calling it
right then and there), so that Tkinter knows what to call when "Example 1"
is clicked.

> Thanks,
> Dave

Hope that helps,

Brad