如何在 Tkinter 消息窗口中自动滚动

发布于 2024-07-18 07:07:07 字数 588 浏览 6 评论 0原文

我编写了以下类，用于在额外的窗口中生成“监视”输出。

不幸的是，它不会自动向下滚动到最新行。怎么了？
因为我在 Tkinter 和 ipython 方面也有问题：qt4 的等效实现会是什么样子？

这是代码：

import Tkinter
class Monitor(object):
  @classmethod
  def write(cls, s):
    try:
      cls.text.insert(Tkinter.END, str(s) + "\n")
      cls.text.update()
    except Tkinter.TclError, e:
      print str(s)
  mw = Tkinter.Tk()
  mw.title("Message Window by my Software")
  text = Tkinter.Text(mw, width = 80, height = 10)
  text.pack()

用法：

Monitor.write("Hello World!")

原文

I wrote the following class for producing "monitoring" output within an extra window.

Unfortunately it doesn't scroll automatically down to the most recent line. What is wrong?
As I also have problems with Tkinter and ipython: how would an equivalent implementation with qt4 look like?

Here is the code:

import Tkinter
class Monitor(object):
  @classmethod
  def write(cls, s):
    try:
      cls.text.insert(Tkinter.END, str(s) + "\n")
      cls.text.update()
    except Tkinter.TclError, e:
      print str(s)
  mw = Tkinter.Tk()
  mw.title("Message Window by my Software")
  text = Tkinter.Text(mw, width = 80, height = 10)
  text.pack()

Usage:

Monitor.write("Hello World!")

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

不气馁 2024-07-25 07:07:07

在调用 insert 的后面添加一条语句 cls.text.see(Tkinter.END)。

回复收藏 0 原文

厌味 2024-07-25 07:07:07

对于那些可能想尝试绑定的人：

def callback():
    text.see(END)
    text.edit_modified(0)
text.bind('<<Modified>>', callback)

请小心。正如@BryanOakley 指出的，Modified 虚拟事件仅被调用一次，直到被重置。考虑如下：

import Tkinter as tk

def showEnd(event):
    text.see(tk.END)
    text.edit_modified(0) #IMPORTANT - or <<Modified>> will not be called later.

if __name__ == '__main__':

    root= tk.Tk()

    text=tk.Text(root, wrap=tk.WORD, height=5)
    text.insert(tk.END, "Can\nThis\nShow\nThe\nEnd\nor\nam\nI\nmissing\nsomething")
    text.edit_modified(0) #IMPORTANT - or <<Modified>> will not be called later.
    text.pack()
    text.bind('<<Modified>>',showEnd)

    button=tk.Button(text='Show End',command = lambda : text.see(tk.END))
    button.pack()
    root.mainloop()

To those who might want to try binding:

def callback():
    text.see(END)
    text.edit_modified(0)
text.bind('<<Modified>>', callback)

Just be careful. As @BryanOakley pointed out, the Modified virtual event is only called once until it is reset. Consider below:

import Tkinter as tk

def showEnd(event):
    text.see(tk.END)
    text.edit_modified(0) #IMPORTANT - or <<Modified>> will not be called later.

if __name__ == '__main__':

    root= tk.Tk()

    text=tk.Text(root, wrap=tk.WORD, height=5)
    text.insert(tk.END, "Can\nThis\nShow\nThe\nEnd\nor\nam\nI\nmissing\nsomething")
    text.edit_modified(0) #IMPORTANT - or <<Modified>> will not be called later.
    text.pack()
    text.bind('<<Modified>>',showEnd)

    button=tk.Button(text='Show End',command = lambda : text.see(tk.END))
    button.pack()
    root.mainloop()

回复收藏 0 原文

~没有更多了~