How to use the mouse wheel to scroll in Tkinter, if it's in the frame the scrollbar is in?

# explore the mouse wheel with the Tkinter GUI toolkit
# Windows and Linux generate different events
# tested with Python25

import Tkinter as tk

def mouse_wheel(event):
    global count
    # respond to Linux or Windows wheel event
    if event.num == 5 or event.delta == -120:
        count -= 1
    if event.num == 4 or event.delta == 120:
        count += 1
    label['text'] = count

count = 0
root = tk.Tk()
root.title('turn mouse wheel')
root['bg'] = 'darkgreen'

# with Windows OS
root.bind("<MouseWheel>", mouse_wheel)
# with Linux OS
root.bind("<Button-4>", mouse_wheel)
root.bind("<Button-5>", mouse_wheel)

label = tk.Label(root, font=('courier', 18, 'bold'), width=10)
label.pack(padx=40, pady=40)

root.mainloop()

self.canvas = tk.Canvas(self, borderwidth=0, background="#000000")          #place canvas on self
    self.viewPort = tk.Frame(self.canvas, background="#000000")                    #place a frame on the canvas, this frame will hold the child widgets
    self.vsb = tk.Scrollbar(self, orient="vertical", command=self.canvas.yview) #place a scrollbar on self
    self.hsb = tk.Scrollbar(self, orient=HORIZONTAL, command=self.canvas.xview)  # place a scrollbar on self
    self.canvas.configure(yscrollcommand=self.vsb.set,xscrollcommand=self.hsb.set)                          #attach scrollbar action to scroll of canvas
    #self.canvas.configure(xscrollcommand=self.hsb.set)
    self.vsb.pack(side="right", fill="y")                                       #pack scrollbar to right of self
    self.hsb.pack(side="bottom", fill=X)
    self.canvas.pack(side="right", fill="both", expand=True)                     #pack canvas to left of self and expand to fil
    self.canvas_window = self.canvas.create_window((0,0), window=self.viewPort, anchor="nw",            #add view port frame to canvas
                              tags="self.viewPort")

    self.viewPort.bind("<Configure>", self.onFrameConfigure)                       #bind an event whenever the size of the viewPort frame changes.
    self.canvas.bind("<Configure>", self.onCanvasConfigure)                       #bind an event whenever the size of the viewPort frame changes.

    self.onFrameConfigure(None)                                                 #perform an initial stretch on render, otherwise the scroll region has a tiny border until the first resize

def onFrameConfigure(self, event):
    '''Reset the scroll region to encompass the inner frame'''
    self.canvas.configure(scrollregion=self.canvas.bbox("all"))                 #whenever the size of the frame changes, alter the scroll region respectively.

def onCanvasConfigure(self, event):
    '''Reset the canvas window to encompass inner frame when required'''
    canvas_width = event.width
    self.canvas.itemconfig(self.canvas_window, width = canvas_width)            #whenever the size of the canvas chang

style = ttk.Style()
style.theme_use('clam')

...
self.vsb = ttk.Scrollbar(self, orient="vertical", command=self.canvas.yview) #place a scrollbar on self