matplotlib/tkinter: mpl_connect key_press_event

[cisac]

Hello,

I have 2 canvases, which will eventually contain plots made with matplotlib, packed side by side in a Tkinter window. Using mpl_connect with key_press_event and button_press event works fine initially. However, when I pack the second canvas widget the binding to key_press_event stops working. The button press binding still works fine. Any help would be much appreciated!

import matplotlib
if matplotlib.get_backend() is not 'TkAgg': matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import *
from Tkinter import *

root=Tk()
def get_key(event):
    print "Key Press"
def get_click(event):
    print "Click"
f=Figure()
ax=f.add_subplot(111)
canvas=FigureCanvasTkAgg(f,master=root)
canvas.mpl_connect("key_press_event",get_key)
canvas.mpl_connect("button_press_event",get_click)
tkwidget=canvas.get_tk_widget()
tkwidget.pack(side=LEFT)

f2=Figure()
ax2=f2.add_subplot(111)
canvas2=FigureCanvasTkAgg(f2,master=root)
tkwidget2=canvas2.get_tk_widget()
#Packs the second tkwidget.  When uncommented, get_click() still works, but get_key() does not.
#tkwidget2.pack(side=LEFT)