撤消tkinter文本小部件中的功能

Question

我试图undo在我的文本小部件上使用函数,tkinter但没有任何运气.我这样试过:

from Tkinter import *
from ttk import Notebook

def OnVsb(*args):
    text.yview(*args)
    numbers.yview(*args)

def OnMouseWheel(event):
    text.yview("scroll", event.delta,"units")
    numbers.yview("scroll",event.delta,"units")
    return "break"

def undo(*argv):
    text.edit_undo()

root = Tk()
defaultbg = root.cget('bg')
root.bind('<Control-z>', undo)
note = Notebook(root)
frame = Frame(note, bd=5, relief=GROOVE, padx=5, pady=5)
frame.pack()
bar = Scrollbar(frame, command=OnVsb)
bar.pack(side=RIGHT, fill=Y)
numbers = Listbox(frame, width=5, height=30,bg=defaultbg,relief=FLAT,   yscrollcommand=bar.set)
numbers.pack(side=LEFT, fill=Y)
text = Text(frame,bd=3, width=145, height=30, yscrollcommand=bar.set)
text.pack(side=LEFT, fill=Y) 
text.bind("<MouseWheel>", OnMouseWheel)
text.tag_config("attr", foreground="tomato")
text.tag_config("value", foreground="dark violet")
text.tag_config("tags", foreground="dodger blue")
text.tag_config("text", font=("Georgia", "9", "bold"))
text.focus_set()
root.lift()
root.call('wm', 'attributes', '.', '-topmost', '1')
root.after_idle(root.call, 'wm', 'attributes', '.', '-topmost', False)
root.mainloop()

但由于某种原因,它什么也没做.我认为它是默认在文本小部件中实现的,但它没有用.有关如何在文本小部件上使用此功能的任何建议？任何例子都将非常感激.

Answer 1

好的,我终于找到了这些信息.

所有我需要的是设置undo为True我初始化文本小部件,就像这样:

text = Text(frame,bd=3, width=145, height=30, yscrollcommand=bar.set, undo=True)

没有必要的undo功能和text.bind.当它自动工作undo的True.