tkinter - I have too fix something in my Copy&Paste program in Python -

this copy&paste program:

from tkinter import * import pmw class copytextwindow(frame):      def __init__(self):         frame.__init__(self)         pmw.initialise()         self.pack(expand=yes, fill=both)         self.master.title("scrolledtext demo")         self.frame1=frame(self, bg="white")         self.frame1.pack(expand=yes, fill=both)          self.text1=pmw.scrolledtext(self, text_width=25, text_height=12, text_wrap=word,                               hscrollmode="static", vscrollmode="static")         self.text1.pack(side=left, expand=yes, fill=both, padx=5, pady=5)          options = ["copy", "paste"]         self.selectedoption = stringvar()          self.menu = menu(self.frame1, tearoff=0)          option in options:             self.menu.add_radiobutton( label=option, variable=self.selectedoption,                                    command=self.executeoption)          self.text1.bind("<button-3>", self.popupmenu)      def popupmenu(self, event):         self.menu.post(event.x_root, event.y_root)      def executeoption(self):         if self.selectedoption.get()=="copy":             self.copiedtext=self.text1.get(sel_first, sel_last)         else:             self.text1.settext( self.text1.get()+self.copiedtext)  def main():     copytextwindow().mainloop()  if __name__=="__main__":     main() 

in program, want make gui, in can copy , paste text have selected. when press right mouse button, little menu copy , paste options.

the program opens up, when press right mouse button, no menu appears. python doesn't complain error.

i need understand mistake in code.

for reason ignore, event doesn't seem triggered when bind on text or on frame, works when it's on main window:

from tkinter import * import pmw class copytextwindow(frame):      def __init__(self, master=none):         # i've added master option pass frame         frame.__init__(self, master)         pmw.initialise()         self.pack(expand=yes, fill=both)         self.master.title("scrolledtext demo")         self.frame1=frame(self, bg="white")         self.frame1.pack(expand=yes, fill=both)          self.text1=pmw.scrolledtext(self, text_width=25, text_height=12, text_wrap=word,                               hscrollmode="static", vscrollmode="static")         self.text1.pack(side=left, expand=yes, fill=both, padx=5, pady=5)          options = ["copy", "paste"]         self.selectedoption = stringvar()          self.menu = menu(self.frame1, tearoff=0)          option in options:             self.menu.add_radiobutton( label=option, variable=self.selectedoption,                                    command=self.executeoption)      def popupmenu(self, event):         print("ok")         self.menu.post(event.x_root, event.y_root)      def executeoption(self):         if self.selectedoption.get()=="copy":             self.copiedtext=self.text1.get(sel_first, sel_last)         else:             self.text1.settext( self.text1.get()+self.copiedtext)  def main():     # main window     root = tk()     ctw = copytextwindow(root)     # bind on main window     root.bind("<button-3>", ctw.popupmenu)     root.mainloop()  if __name__=="__main__":     main()