[pygtk] PROBLEM: gtkwarning: gdk_property_change: assertion 'window != NULL' failed Options

[Peter Irbizon]

hello guys,

please, I need help. I am new to pygtk and python and in my .py file I am
getting error: gtkwarning: gdk_property_change: assertion 'window != NULL'
failed

this error occurs when I right click on textview and select cut/paste/copy.
What am I doing wrong? thank you in advance.


my xaa.py code looks like:
import sys
import traceback
import pygtk
pygtk.require("2.0")
import gtk
import gobject
class jednoduchy_textovy_prohlizec ():
      def __init__(self):
          self.okno = gtk.Window()
          self.okno.set_title("Textový editor")
          self.okno.set_border_width(10)

          # Editor
          self.textovy_buffer = gtk.TextBuffer()
          self.textovy_prohlizec = gtk.TextView(self.textovy_buffer)
          self.posuvnikove_okno = gtk.ScrolledWindow()
          self.posuvnikove_okno.set_policy(gtk.POLICY_AUTOMATIC,
gtk.POLICY_AUTOMATIC)

self.posuvnikove_okno.add_with_viewport(self.textovy_prohlizec)

          self.vbox = gtk.VBox(False, 5)
          self.vbox.pack_end(self.posuvnikove_okno)

          self.okno.add(self.vbox)
          self.okno.show_all()

          self.okno.connect("destroy", gtk.main_quit)

if __name__ == "__main__":
      aplikace = jednoduchy_textovy_prohlizec()
      gtk.main()
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