how to do this?

[Peter Otten]

Justin Straube wrote:

> As the user enters or removes characters into/from sEnt I would like
> for set_info() to set infVar with the correct value. The same as how
> IDLE shows the line and column in the lower right corner.
> 
> #### Code Example ####
> from time import localtime
> from Tkinter import *

  # ignore arguments we don't care for in our application
  def set_info(*args):
>      x = len(strVar.get())
>      infVar.set('Length: %i' % (x))
> 
> ROOT = Tk()
> strVar = StringVar()
> infVar = StringVar()

  # register set_info() to listen for changes written to strVar
  strVar.trace_variable("w", set_info)

> sLab = Label(ROOT, text='String')
> sLab.grid(row=0, column=0)
> sEnt = Entry(ROOT, textvariable=strVar, width=15)
> sEnt.grid(row=0, column=1, columnspan=2)
> qBut = Button(ROOT, text='Quit', command=ROOT.quit)
> qBut.grid(row=1, column=2, pady=2, padx=2, sticky=E)
> iLab = Label(ROOT, textvariable=infVar, width=21,
>               relief=SUNKEN, anchor=W)
> iLab.grid(row=2, column=0, columnspan=3)
> 
> set_info() # example to show what will be displayed.
> ROOT.mainloop()
> #### End Example ####
> 
> Can anyone point me in the right direction for how to do this?

Yes, see above.

Peter