我有一个窗口设置了几个小部件,但我想要那些小部件'在一些用户输入(例如按钮点击)之后要更新的信息。此外,我希望事件处理程序能够向窗口添加新窗口小部件。 我已经尝试过以下简单版本的问题。显然它不起作用。
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gdk, Gtk
class Button(Gtk.Box):
def __init__(self, message, label, window_grid):
Gtk.Box.__init__(self, spacing=6)
self.set_border_width(10)
self.label = label
self.window_grid = window_grid
button = Gtk.Button.new_with_label(message)
button.connect("clicked", self.on_click)
self.pack_start(button, True, True, 0)
def on_click(self, widget):
# Change/update a label in the window_grid
self.label = LabelBox("Changed the label")
self.label.queue_draw()
# Add a new label to the window_grid
new_label = LabelBox("New label")
self.window_grid.attach(new_label, 0, 2, 1, 1)
class LabelBox(Gtk.Box):
def __init__(self, message):
Gtk.Box.__init__(self, spacing=6)
self.set_border_width(10)
label = Gtk.Label(message)
self.pack_start(label, True, True, 0)
win = Gtk.Window()
window_grid = Gtk.Grid()
label = LabelBox("This is a label")
button = Button("Test", label, window_grid)
window_grid.attach(label, 0, 0, 1, 1)
window_grid.attach(button, 0, 1, 2, 2)
win.add(window_grid)
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
答案 0 :(得分:0)
您的代码结构格式不正确。这段代码对我有用:
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
import sys
class GUI:
def __init__(self):
self.win = Gtk.Window()
self.window_grid = Gtk.Grid()
box = Gtk.Box()
button = Gtk.Button.new_with_label("Test")
button.connect("clicked", self.on_click)
self.label = Gtk.Label("This is a label")
self.window_grid.attach(self.label, 0, 0, 1, 1)
self.window_grid.attach(button, 0, 1, 2, 2)
self.win.add(self.window_grid)
self.win.connect("delete-event", Gtk.main_quit)
self.win.show_all()
def on_click(self, widget):
# Change/update a label in the window_grid
self.label.set_label('Label changed')
label = Gtk.Label("Another label")
self.window_grid.attach(label, 2, 1, 2, 2)
self.win.show_all()
def main():
app = GUI()
Gtk.main()
if __name__ == "__main__":
sys.exit(main())
同时记住@andlabs注释,默认情况下隐藏小部件。
答案 1 :(得分:0)
如前所述,您的代码逻辑不是很好。您必须尝试了解如何设计应用程序。无论如何,我设法让你的代码适合你的问题:
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
class Button(Gtk.Box):
def __init__(self, message, label, window_grid):
Gtk.Box.__init__(self, spacing=6)
self.set_border_width(10)
self.label = label
self.window_grid = window_grid
button = Gtk.Button.new_with_label(message)
button.connect("clicked", self.on_click)
self.pack_start(button, True, True, 0)
def on_click(self, widget):
# Change/update a label in the window_grid
self.label.label.set_text("Changed the lable")
# Add a new label to the window_grid
new_label = LabelBox("New label")
self.window_grid.attach(new_label, 0, 2, 1, 1)
new_label.show_all()
class LabelBox(Gtk.Box):
def __init__(self, message):
Gtk.Box.__init__(self, spacing=6)
self.set_border_width(10)
self.label = Gtk.Label(message)
self.pack_start(self.label, True, True, 0)
win = Gtk.Window()
window_grid = Gtk.Grid()
label = LabelBox("This is a label")
button = Button("Test", label, window_grid)
window_grid.attach(label, 0, 0, 1, 1)
window_grid.attach(button, 0, 1, 1, 1)
win.add(window_grid)
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()
将它与你的相比较,看看你犯过的错误。没有必要将标签和按钮包装在GtkBox中。