Gtk MessageDialog导致段错误（PYGObject）
[英]Gtk MessageDialog causes segfault (PYGObject)
问题描述
What is wrong with my program? 
我的程序有什么问题？ It works fine until it tries to show the dialog box and then it segfaults. 在尝试显示对话框然后进行段错误之前，它可以正常工作。
Forgive me if the solution is obvious, this is only my second GTK+ program. 如果解决方案显而易见，请原谅我，这只是我的第二个GTK +程序。
import time, threading
from sys import exit
from gi.repository import Gtk, GObject
def run_core_engine():
time.sleep(2)
window.switchToMainFrame()
time.sleep(2.5)
window.failDialog("The window said hello")
class CoreThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.daemon = True
super(CoreThread, self).start()
def run(self):
run_core_engine()
class GettingInfoFrame(Gtk.Frame):
def __init__(self):
Gtk.Frame.__init__(self)
self.connect("delete-event", Gtk.main_quit)
self.set_shadow_type(Gtk.ShadowType.NONE)
self.set_border_width(45)
vbox = Gtk.VBox(spacing=10)
hbox = Gtk.HBox(spacing=10)
text = Gtk.Label()
text.set_markup("<b><big>Doing stuff...</big></b>")
self.spinner = Gtk.Spinner()
self.spinner.set_size_request(30, 30)
self.spinner.start()
hbox.pack_start(text, True, True, 10)
hbox.pack_start(self.spinner, True, True, 10)
vbox.pack_start(hbox, True, True, 10)
self.add(vbox)
class TheMainFrame(Gtk.Frame):
def __init__(self):
Gtk.Frame.__init__(self)
self.set_shadow_type(Gtk.ShadowType.NONE)
self.set_border_width(150)
label = Gtk.Label("Hello")
box = Gtk.VBox()
box.pack_start(label, True, True, 0)
self.add(box)
class Window(Gtk.Window):
def __init__(self):
## Setup Main Window
Gtk.Window.__init__(self, title="Fred the window")
self.connect("delete-event", Gtk.main_quit)
self.set_resizable(False)
self.gettingInfoFrame = GettingInfoFrame()
self.add(self.gettingInfoFrame)
def switchToMainFrame(self):
print("Displaying information in window")
self.theMainFrame = TheMainFrame()
self.remove(self.get_child())
self.add(self.theMainFrame)
self.show_all()
def failDialog(self, message):
dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.INFO,
Gtk.ButtonsType.OK, "INFO:")
dialog.format_secondary_text(message)
dialog.run() **# <-- Where the error occurs**
Gtk.main_quit()
GObject.threads_init()
core_thread = CoreThread()
window = Window()
window.show_all()
Gtk.main()
The error jargon: 错误行话：
Displaying information in window
(2ndgtk+.py:32073): Gtk-WARNING **: GtkMessageDialog 0x7ff51400a040: widget tried to gtk_widget_get_width inside GtkWidget ::get_width implementation.
(2ndgtk+.py:32073): Gtk-WARNING **: GtkBox 0x7ff514004080: widget tried to gtk_widget_get_width inside GtkWidget ::get_width implementation.
(2ndgtk+.py:32073): Gtk-WARNING **: GtkButtonBox 0x2170620: widget tried to gtk_widget_get_width inside GtkWidget ::get_width implementation.
(2ndgtk+.py:32073): Gtk-WARNING **: GtkButton 0x7ff514010050: widget tried to gtk_widget_get_height inside GtkWidget ::get_height implementation.
(2ndgtk+.py:32073): Gtk-WARNING **: GtkAlignment 0x7ff514014070: widget tried to gtk_widget_get_height inside GtkWidget
::get_height implementation.(2ndgtk+.py:32073): Gtk-WARNING **: GtkBox 0x7ff514004320: widget tried to gtk_widget_get_height inside GtkWidget ::get_height implementation.
(2ndgtk+.py:32073): Gtk-WARNING **: GtkLabel 0x22a2ac0: widget tried to gtk_widget_get_height inside GtkWidget ::get_height implementation.
1 个解决方案
解决方案1
1 已采纳 2013-06-04 01:08:44
I figured it out. 我想到了。 The problem was calling "window.failDialog" directly instead of with GLib.idle_add. 问题是直接调用“ window.failDialog”，而不是使用GLib.idle_add。 I added some other slight changes. 我添加了其他一些细微变化。
Here is the new code: 这是新代码：
import time, threading
from sys import exit
from gi.repository import Gtk, GObject, GLib
def run_core_engine():
time.sleep(2)
window.switchToMainFrame()
time.sleep(2.5)
GLib.idle_add(window.failDialog, "The window said hello")
class CoreThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.daemon = True
super(CoreThread, self).start()
def run(self):
run_core_engine()
class GettingInfoFrame(Gtk.Frame):
def __init__(self):
Gtk.Frame.__init__(self)
self.connect("delete-event", Gtk.main_quit)
self.set_shadow_type(Gtk.ShadowType.NONE)
self.set_border_width(45)
vbox = Gtk.VBox(spacing=10)
hbox = Gtk.HBox(spacing=10)
text = Gtk.Label()
text.set_markup("<b><big>Doing stuff...</big></b>")
self.spinner = Gtk.Spinner()
self.spinner.set_size_request(30, 30)
self.spinner.start()
hbox.pack_start(text, True, True, 10)
hbox.pack_start(self.spinner, True, True, 10)
vbox.pack_start(hbox, True, True, 10)
self.add(vbox)
class TheMainFrame(Gtk.Frame):
def __init__(self):
Gtk.Frame.__init__(self)
self.set_shadow_type(Gtk.ShadowType.NONE)
self.set_border_width(150)
label = Gtk.Label("Hello")
box = Gtk.VBox()
box.pack_start(label, True, True, 0)
self.add(box)
class Window(Gtk.Window):
def __init__(self):
## Setup Main Window
Gtk.Window.__init__(self, title="Fred the window")
self.connect("delete-event", Gtk.main_quit)
self.set_resizable(False)
self.gettingInfoFrame = GettingInfoFrame()
self.add(self.gettingInfoFrame)
def switchToMainFrame(self):
print("Displaying information in window")
self.theMainFrame = TheMainFrame()
self.remove(self.get_child())
self.add(self.theMainFrame)
self.show_all()
def failDialog(self, errorMessage):
dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.INFO,
Gtk.ButtonsType.OK, "INFO:")
dialog.format_secondary_text(errorMessage)
dialog.run()
Gtk.main_quit()
GObject.threads_init()
core_thread = CoreThread()
window = Window()
window.show_all()
Gtk.main()
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