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Recipe 578894 revision 1 

# Version: 0.1
# Author: Miguel Martinez Lopez
# Uncomment the next line to see my email
# print "Author's email: ", "61706c69636163696f6e616d656469646140676d61696c2e636f6d".decode("hex")


import Tkinter as tk
import ttk

class MouseWheel(object):
	def __init__(self, root, factor = 0.5):
		self.activeWidget = None
		self.factor = factor

		import platform
		os = platform.system()

		if os == "Linux" :
			root.bind_all('<4>', self.onMouseWheel,  add='+')
			root.bind_all('<5>', self.onMouseWheel,  add='+')
		else:
			# Windows and MacOS
			root.bind_all("<MouseWheel>", self.onMouseWheel,  add='+')

	def onMouseWheel(self,event):
		print self.orient
		if self.activeWidget:
			if self.orient == tk.HORIZONTAL:
				self.activeWidget.xview("scroll",(-1)*int(event.delta/(120*self.factor)),"units" )
			elif self.orient == tk.VERTICAL:
				self.activeWidget.yview("scroll", (-1)*int(event.delta/(120*self.factor)),"units" )
			else:
				if self.activeWidget['yscrollcommand']:
					self.activeWidget.yview("scroll", (-1)*int(event.delta/(120*self.factor)),"units" )
				elif self.activeWidget['xscrollcommand']:
					self.activeWidget.xview("scroll",(-1)*int(event.delta/(120*self.factor)),"units" )

	def mouseWheel_bind(self, widget, orient = None):
		self.activeWidget = widget
		self.orient = orient

	def mouseWheel_unbind(self, widget):
		self.activeWidget = None
		self.orient = None

	def add_scrolling(self, area, xscrollbar=None, yscrollbar=None):
		area.bind('<Enter>',lambda event: self.mouseWheel_bind(area))
		area.bind('<Leave>', lambda event: self.mouseWheel_unbind(area))

		for scrollbar in (xscrollbar, yscrollbar):
			if scrollbar:
				scrollbar.bind('<Enter>', lambda event, orient=str(scrollbar['orient']): self.mouseWheel_bind(area, orient) )
				scrollbar.bind('<Leave>', lambda event: self.mouseWheel_unbind(area))



def test():
	root = tk.Tk()

	xScrollbar = ttk.Scrollbar(root, orient=tk.HORIZONTAL)
	xScrollbar.grid(row=1, column=0, sticky= "ew")

	yScrollbar = ttk.Scrollbar(root, orient=tk.VERTICAL)
	yScrollbar.grid(row=0, column=1,sticky="ns")

	canvas1 = tk.Canvas(root, width=300, height=100,xscrollcommand=xScrollbar.set, yscrollcommand=yScrollbar.set)
	canvas1.grid(row=0, column=0)

	frameWindows= tk.Frame(canvas1)
	frameWindows.pack()

	for i in range(20):
		rowFrame = tk.Frame(frameWindows)
		rowFrame.pack()
		for j in range(8):
			tk.Label(rowFrame, text="Label %s, %s" % (str(i), str(j))).pack(side=tk.LEFT)

	canvas1.create_window(0, 0, window=frameWindows, anchor='nw')

	canvas1.update_idletasks()

	canvas1['scrollregion'] = (0,0,frameWindows.winfo_reqwidth(), frameWindows.winfo_reqheight())
	yScrollbar['command']=canvas1.yview
	xScrollbar['command']=canvas1.xview


	MouseWheel(root).add_scrolling(canvas1,xscrollbar=xScrollbar, yscrollbar=yScrollbar)

	root.mainloop()


if __name__== '__main__':
	test()

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