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I recently made a code in python3.x and for the interface I used a file . However when I execute the code the interface opens but does not perform any action and interpreter returns me the error "Attributeerror: Handler Gtk_main_quit not found" and so for all other functions of the code. Python:
`#!/usr/bin/python3
# coding: utf-8
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
class InverterApp():
def __init__(self):
builder = Gtk.Builder()
builder.add_from_file("Inverter.glade")
#Obter a janela principal
self.window = builder.get_object("window1")
# Obtendo o widget text_entry (a área de texto do nosso programa) pois
# iremos utiliza-la nas funções de inversão da URL e para adicionar o a
# URL já invertida
self.text_area = builder.get_object("text_entry")
# Obtendo o widget about_dialog (janelinha com as informações do programa)
self.about = builder.get_object("about_dialog")
#Exibe a janela do programa
self.window.show_all()
builder.connect_signals({"gtk_main_quit": Gtk.main_quit,
"on_button_invert_clicked": self.invert_url,
"on_text_entry_activate": self.invert_url,
"on_copy_activate": self.copy_text,
"on_paste_activate": self.paste_text,
"on_delete_activate": self.delete_text,
"on_about_activate": self.about_window,
})
def invert_url(self, widget):
url = self.text_area.get_text()
url = url[::-1]
self.text_area.set_text(url)
def copy_text(self, widget):
clipboard = Gtk.clipboard_get()
url = self.text_area.get_text()
clipboard.set_text(url)
clipboard.store()
def paste_text(self, widget):
clipboard = Gtk.clipboard_get()
url = clipboard.wait_for_text()
self.text_area.set_text(url)
def delete_text(self, widget):
self.text_area.set_text("")
def about_window(self, widget):
self.about.run()
self.about.hide()
if __name__ == "__main__":
app = InverterApp()
Gtk.main()`
Code Glade:
`<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.18.3 -->
<interface>
<requires lib="gtk+" version="3.12"/>
<object class="GtkAboutDialog" id="about_dialog">
<property name="width_request">320</property>
<property name="height_request">260</property>
<property name="can_focus">False</property>
<property name="type">popup</property>
<property name="resizable">False</property>
<property name="window_position">center</property>
<property name="type_hint">normal</property>
<property name="program_name">Inverter</property>
<property name="version">1.0</property>
<property name="comments" translatable="yes">Simples Inversor
Versão 1.0</property>
<property name="website">www.teste.com.br</property>
<property name="website_label" translatable="yes">Licença-web</property>
<property name="license" translatable="yes">Huehuehue</property>
<property name="authors">Guilherme</property>
<property name="logo">heart.png</property>
<property name="wrap_license">True</property>
<child internal-child="vbox">
<object class="GtkBox" id="aboutdialog-vbox1">
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<property name="spacing">2</property>
<child internal-child="action_area">
<object class="GtkButtonBox" id="aboutdialog-action_area1">
<property name="can_focus">False</property>
<property name="layout_style">end</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">0</property>
</packing>
</child>
</object>
</child>
</object>
<object class="GtkWindow" id="window1">
<property name="width_request">650</property>
<property name="height_request">110</property>
<property name="can_focus">False</property>
<property name="title" translatable="yes">Teste</property>
<property name="resizable">False</property>
<property name="window_position">center</property>
<property name="icon">heart.png</property>
<signal name="destroy" handler="Gtk_main_quit" swapped="no"/>
<child>
<object class="GtkBox" id="box1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkMenuBar" id="menubar1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkMenuItem" id="Editar">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">_Editar</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkImageMenuItem" id="Copy">
<property name="label">gtk-copy</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
<signal name="activate" handler="on_Copy_activate" swapped="no"/>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="Paste">
<property name="label">gtk-paste</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
<signal name="activate" handler="on_Paste_activate" swapped="no"/>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="Delete">
<property name="label">gtk-delete</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
<signal name="activate" handler="on_Delete_activate" swapped="no"/>
</object>
</child>
</object>
</child>
</object>
</child>
<child>
<object class="GtkMenuItem" id="Ajuda">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Aj_uda</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkImageMenuItem" id="About">
<property name="label">gtk-about</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
<signal name="activate" handler="on_About_activate" swapped="no"/>
</object>
</child>
</object>
</child>
</object>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="text_entry">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="text" translatable="yes">Digite a URL aqui...</property>
<signal name="activate" handler="on_text_entry_activate" swapped="no"/>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="padding">17</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkButtonBox" id="buttonbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<property name="layout_style">start</property>
<child>
<object class="GtkButton" id="Button_invert">
<property name="label" translatable="yes">Inverter</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="relief">none</property>
<signal name="clicked" handler="on_Button_invert_clicked" swapped="no"/>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">2</property>
</packing>
</child>
</object>
</child>
</object>
</interface>`