ammar azif wrote:
> Hi,
>
> Thanks for answering .. btw what do you mean by explicit , helper
> function? Can you explain about these functions?
I just mean, define an ordinary function of no arguments that does what
you want. For example, the calculator program I linked to has this Button:
tk.Button(root,text='1',width=5,relief=tk.RIDGE,
command=lambda: click('1'))
That could be written as
def click1():
click('1')
tk.Button(root,text='1',width=5,relief=tk.RIDGE, command=click1)
Notice there are no parentheses after 'click1' in the Button definition;
you are passing the actual function to the Button.
Kent
PS Please reply on-list.
>
> */Kent Johnson <[EMAIL PROTECTED]>/* wrote:
>
> ammar azif wrote:
> > Hi,
> >
> > Thanks for the help guys.
> >
> >
> > I have tried gui programming using Tkinter and use the Button class
> > which accepts the command argument which is a function object.
> >
> > The question is how to send arguments if the function accepts
> arguments.
>
> A common way to do this is to use a lambda expression to bind the
> arguments, e.g.
> Button(..., command = lambda: func_with_args(1, 2, 3))
>
> For example see
> http://www.daniweb.com/code/snippet610.html
>
> You could also define explicit, short helper functions if you don't
> want
> to use lambdas.
>
> Kent
>
>
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>
>
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