我正在制作一个必须登录才能进入的界面。所以在登录窗口，我放了一个按钮来打开一个模式窗口（关于对话框）。它工作得很好，但只有一次，我的意思是：这个窗口可以打开和关闭，但如果你再试一次，它就会失败。我不知道为什么，而且我很笨。Glade代码是：
<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.16.1 -->
<interface>
<requires lib="gtk+" version="3.10"/>
<object class="GtkAboutDialog" id="aboutwin">
<property name="can_focus">False</property>
<property name="resizable">False</property>
<property name="modal">True</property>
<property name="window_position">center</property>
<property name="destroy_with_parent">True</property>
<property name="type_hint">dialog</property>
<property name="has_resize_grip">False</property>
<property name="program_name">Movies App</property>
<property name="version">Version: 0.1</property>
<property name="authors">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="documenters">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="translator_credits" translatable="yes">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="artists">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="logo_icon_name">video-x-generic</property>
<property name="license_type">gpl-3-0</property>
<signal name="close" handler="onDeleteWindow" swapped="no"/>
<signal name="delete-event" handler="onDeleteWindow" swapped="no"/>
<child internal-child="vbox">
<object class="GtkBox" id="about">
<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>
<signal name="delete-event" handler="onDeleteWindow" swapped="no"/>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="pack_type">end</property>
<property name="position">0</property>
</packing>
</child>
</object>
</child>
</object>
<object class="GtkWindow" id="signinwin">
<property name="can_focus">False</property>
<property name="title" translatable="yes">Movie App</property>
<property name="resizable">False</property>
<property name="window_position">center</property>
<property name="has_resize_grip">False</property>
<signal name="delete-event" handler="onDeleteWindow" swapped="no"/>
<child>
<object class="GtkGrid" id="grid1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_left">10</property>
<property name="margin_right">60</property>
<property name="margin_top">10</property>
<property name="margin_bottom">10</property>
<child>
<object class="GtkEntry" id="login">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="margin_right">10</property>
<property name="margin_bottom">5</property>
<property name="input_purpose">name</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">1</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="pass">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="margin_right">10</property>
<property name="margin_top">5</property>
<property name="margin_bottom">5</property>
<property name="placeholder_text" translatable="yes">************</property>
<property name="input_purpose">password</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">2</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="userlabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_right">6</property>
<property name="label" translatable="yes">User</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="passlabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_right">6</property>
<property name="label" translatable="yes">Password</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">2</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button1">
<property name="label" translatable="yes">Sign in</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="margin_left">20</property>
<property name="margin_right">20</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">3</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="title">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_left">5</property>
<property name="margin_right">5</property>
<property name="margin_top">5</property>
<property name="margin_bottom">5</property>
<property name="label" translatable="yes">Movie App</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkGrid" id="grid2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkButton" id="policy">
<property name="label" translatable="yes">Policy</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="margin_left">30</property>
<property name="margin_right">5</property>
<property name="margin_top">30</property>
<property name="margin_bottom">5</property>
</object>
<packing>
<property name="left_attach">0</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="aboutus">
<property name="label" translatable="yes">About</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="margin_left">5</property>
<property name="margin_right">30</property>
<property name="margin_top">30</property>
<property name="margin_bottom">5</property>
<signal name="clicked" handler="onAboutPressed" swapped="no"/>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">4</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
</object>
</child>
</object>
</interface>
我的python代码是：
#!/usr/bin/python
from gi.repository import Gtk
class Handler(Gtk.Window):
def onDeleteWindow(self, *args):
self.destroy()
Gtk.main_quit(*args)
def onAboutPressed(self, button):
about = builder.get_object("aboutwin")
about.run()
about.destroy()
builder = Gtk.Builder()
builder.add_from_file("v0.glade")
builder.connect_signals(Handler())
main = builder.get_object("signinwin")
main.show_all()
Gtk.main()
我不能告诉你错误的确切原因，但可能是你在Glade中分配了错误的信号。我将关闭事件从GtkDialog-->关闭切换到GtkDialog-->response。最好只在需要的时候得到AboutDialog，所以我把它放到了自己的类中。我也是一个初学者，但代码现在应该可以工作了：
#!/usr/bin/python
from gi.repository import Gtk
class AboutDialog:
def __init__(self):
self.builder = Gtk.Builder()
self.builder.add_objects_from_file("v0.glade", ("aboutwin", ""))
self.ab = self.builder.get_object("aboutwin")
self.builder.connect_signals(self)
def on_aboutdialog_response(self, widget, signal):
print("About close with button or (x)")
self.ab.hide()
def run(self):
self.ab.run()
class MainHandler(Gtk.Window):
def on_delete_window(self, widget, signal):
print("Main window closed")
Gtk.main_quit()
def on_about_pressed(self, button):
print("Run About Dialog")
about = AboutDialog()
about.run()
def main():
builder = Gtk.Builder()
builder.add_objects_from_file("v0.glade", ("signinwin", "") )
builder.connect_signals(MainHandler())
main = builder.get_object("signinwin")
main.show_all()
Gtk.main()
if __name__ == "__main__":
main()
<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.16.1 -->
<interface>
<requires lib="gtk+" version="3.10"/>
<object class="GtkAboutDialog" id="aboutwin">
<property name="can_focus">False</property>
<property name="resizable">False</property>
<property name="modal">True</property>
<property name="window_position">center</property>
<property name="destroy_with_parent">True</property>
<property name="type_hint">dialog</property>
<property name="has_resize_grip">False</property>
<property name="program_name">Movies App</property>
<property name="version">Version: 0.1</property>
<property name="authors">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="documenters">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="translator_credits" translatable="yes">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="artists">Markos Horro Varela
Breixo Camiña Fernández</property>
<property name="logo_icon_name">video-x-generic</property>
<property name="license_type">gpl-3-0</property>
<signal name="response" handler="on_aboutdialog_response" swapped="no"/>
<child internal-child="vbox">
<object class="GtkBox" id="aboutgrid">
<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">True</property>
<property name="pack_type">end</property>
<property name="position">0</property>
</packing>
</child>
</object>
</child>
</object>
<object class="GtkWindow" id="signinwin">
<property name="can_focus">False</property>
<property name="title" translatable="yes">Movie App</property>
<property name="resizable">False</property>
<property name="window_position">center</property>
<property name="has_resize_grip">False</property>
<signal name="delete-event" handler="on_delete_window" swapped="no"/>
<child>
<object class="GtkGrid" id="grid1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_left">10</property>
<property name="margin_right">60</property>
<property name="margin_top">10</property>
<property name="margin_bottom">10</property>
<child>
<object class="GtkEntry" id="login">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="margin_right">10</property>
<property name="margin_bottom">5</property>
<property name="input_purpose">name</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">1</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="pass">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="margin_right">10</property>
<property name="margin_top">5</property>
<property name="margin_bottom">5</property>
<property name="placeholder_text" translatable="yes">************</property>
<property name="input_purpose">password</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">2</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="userlabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_right">6</property>
<property name="label" translatable="yes">User</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="passlabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_right">6</property>
<property name="label" translatable="yes">Password</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">2</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button1">
<property name="label" translatable="yes">Sign in</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="margin_left">20</property>
<property name="margin_right">20</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">3</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="title">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_left">5</property>
<property name="margin_right">5</property>
<property name="margin_top">5</property>
<property name="margin_bottom">5</property>
<property name="label" translatable="yes">Movie App</property>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkGrid" id="grid2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkButton" id="policy">
<property name="label" translatable="yes">Policy</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="margin_left">30</property>
<property name="margin_right">5</property>
<property name="margin_top">30</property>
<property name="margin_bottom">5</property>
</object>
<packing>
<property name="left_attach">0</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="aboutus">
<property name="label" translatable="yes">About</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="margin_left">5</property>
<property name="margin_right">30</property>
<property name="margin_top">30</property>
<property name="margin_bottom">5</property>
<signal name="clicked" handler="on_about_pressed" swapped="no"/>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
</object>
<packing>
<property name="left_attach">2</property>
<property name="top_attach">4</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
</object>
</child>
</object>
</interface>