[Tutor] Timer?

[Daniel Yoo]

On Sat, 31 Mar 2001, VanL wrote:

> >
> > ###
> > from Tkinter import *
> >
> > class BlinkingButton(Button):
> >     def __init__(self, master, **kwargs):
> >         Button.__init__(self, master, **kwargs)
> >         self.blinkerson = 1
> >         self.blink()
> >
> >     def blink(self):
> >         if self.blinkerson:
> >             self.flash()
> >         self.after(1000, self.blink)
> >
> > if __name__ == '__main__':
> >     root = Tk()
> >     BlinkingButton(root, text="Blinking Button!").pack()
> >     mainloop()
> > ###
> 
> I was testing out what you said and this code didn't work for me.  It created a
> button, but it didn't blink.
> Do you know why?

Hmm... the code is Python 2.0 specific, since I'm doing the call:

    Button.__init__(self, master, **kwargs)

If this is what's causing problems, then let's replace it with something
more compatible:

    apply(Button.__init__, [self, master], kwargs)

They both do the same thing: they call the Button.__init__ function while
giving the user lots of freedom to specify keyword arguments.  However,
I've only been able to test this on my Linux computer; has anyone else had
success with this?