Mouse action: Middle Mouse key，mousemiddle,from Tkinter

Mouse action: Middle Mouse key，mousemiddle,from Tkinter

from Tkinter import *def showAllEvent(event):    print event    for attr in dir(event):         print attr, '=>', getattr(event, attr) def showPosEvent(event):    print 'Widget=%s X=%s Y=%s' % (event.widget, event.x, event.y)def onMiddleClick(event):    print 'Got middle mouse button click:',     showPosEvent(event)    showAllEvent(event)tkroot = Tk()labelfont = ('courier', 20, 'bold')               widget = Label(tkroot, text='Hello bind world')widget.config(bg='red', font=labelfont)        widget.config(height=5, width=20)                 widget.pack(expand=YES, fill=BOTH)widget.bind('<Button-2>',  onMiddleClick)        widget.focus()                                  tkroot.title('Click Me')tkroot.mainloop()