Nub needs help withTkinter

[Martin Franklin]

On Sat, 2003-12-06 at 23:23, Agency wrote:
> I'm trying to program a utility that counts the beats per minute in a
> song
> by tapping the spacebar. I already have a program that does this, but
> I wanted to make my own. The "enter" key resets the counter to zero
> along with one of two displays. I'm importing Tkinter and this is what
> I have so far. I get a syntax error at this spot ----->   
> <KeyPress-space>
> Any thoughts how to get the keypress to increase the counter better?
> Is it possible to convert it to an int or something?
> ------------------------------------------------------------------
> from Tkinter import *
> 
> root = Tk()
> w = Label(root, text="The BPM Counter")
> w.pack()
> 
> class display1:
>     def beat():
>         beat = 0
>         if beat > 10000:
>             beat += <KeyPress-space>
>         
> root.mainloop()


You will need to __bind__ a callback to the key press on a widget. 
something like :-



from Tkinter import *


root=Tk()
lab = Label(root, text = "Beat Counter : ")
lab.pack()

beats = 0



def beatCounter(event):
    print "increment counter"
    global beats
    beats = beats + 1
    lab.config(text = "Beat Counter : %d" %beats)
    
def beatReset(event):
    print "reset counter"
    global beats
    beats = 0 
    lab.config(text = "Beat Counter : %d" %beats)
    
    
root.bind("<space>", beatCounter)
root.bind("<Return   >", beatReset)


root.mainloop()


You should rewrite the above so it does not use the global statement
('cause thats cheating!)



HTH
Martin


-- 
Martin Franklin <mfranklin1 at gatwick.westerngeco.slb.com>