对于简单的GTK窗口,请考虑以下python代码:
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
def on_destroy(widget):
print("Destroying {}".format(widget))
def on_click(button, scroll):
scroll.destroy()
scroll = Gtk.ScrolledWindow()
scroll.connect("destroy", on_destroy)
button = Gtk.Button.new_with_label("Self-destruct")
scroll.add(button)
button.connect("destroy", on_destroy)
button.connect("clicked", on_click, scroll)
window = Gtk.Window()
window.add(scroll)
window.connect("destroy", Gtk.main_quit)
window.set_size_request(200, 75)
window.show_all()
Gtk.main()
按下按钮时,我希望得到两条输出行,报告ScrolledWindow和按钮被破坏。实际上,我只收到一行有关ScrolledWindow的报告,destroy信号永远不会到达按钮。如果将ScrolledWindow替换为普通的Box,则销毁信号到达按钮。为什么会这样?
答案 0 :(得分:0)
除了这个删除按钮的代码之外,我真的不能告诉您更多信息。希望您可以适应您的需求。该按钮似乎确实会从视口中脱离出来,并没有附着任何东西,因为该按钮的destroy处理程序在应用程序关闭时运行,并导致奇怪的错误。出于其他任何想法,将其发布到Gtk邮件列表中会很有趣。
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
def on_destroy(widget, viewport):
print("Destroying {}".format(widget))
viewport.get_child().destroy()
def on_button_destroy(widget):
print("Destroying button {}".format(widget))
def on_click(button):
scroll = button.get_parent().get_parent()
scroll.destroy()
scroll = Gtk.ScrolledWindow()
button = Gtk.Button.new_with_label("Self-destruct")
scroll.add(button)
viewport = button.get_parent()
button.connect("destroy", on_button_destroy)
scroll.connect("destroy", on_destroy, viewport)
button.connect("clicked", on_click)
window = Gtk.Window()
window.add(scroll)
window.connect("destroy", Gtk.main_quit)
window.set_size_request(200, 75)
window.show_all()
Gtk.main()