定义双击文本小部件时选择的字符 [英] defining what characters are selected when double clicking in a Text widget

问题描述

在 Windows 上，双击文本小部件中的单词也将选择连接的标点符号.
有什么办法可以定义你想被选中的字符吗?

On Windows, double clicking a word in a Text widget will also select connected punctuation.
Is there any way to define the characters that you want to be selected?

推荐答案

tcl_wordchars
此变量的值是一个正则表达式，可以设置它来控制被视为单词"字符的内容，例如通过在 Tk 中双击文本来选择一个单词.它是平台依赖.在 Windows 上，它默认为 \S，意思是除了一个Unicode 空格字符.否则它默认为 \w，它是任何Unicode 单词字符(数字、字母或下划线).

tcl_wordchars
The value of this variable is a regular expression that can be set to control what are considered "word" characters, for instances like selecting a word by double-clicking in text in Tk. It is platform dependent. On Windows, it defaults to \S, meaning anything but a Unicode space character. Otherwise it defaults to \w, which is any Unicode word character (number, letter, or underscore).

以下是 Python 3.4 的示例:

Here is an example for Python 3.4:

import tkinter

class Creator(object):

    def __init__(self):

        root = self.root = tkinter.Tk()

        # Main Frame
        f_main = tkinter.Frame(root, borderwidth=6, relief='flat')
        f_main.grid(row=0, column=0, sticky='nsew')

        # Text widget and frame
        f_txt = tkinter.Frame(f_main, borderwidth=2, relief="sunken")
        f_txt.config(width=768, height=768)
        f_txt.pack(padx=4, pady=4, side="bottom", fill="both", expand=True)

        my_txt = self.text = tkinter.Text(f_txt)
        my_txt.config(undo=True, wrap='word')
        my_txt.grid(row=0, column=0, sticky="nsew")
        my_txt.focus_set()

GUI = Creator()
GUI.root.tk.eval("catch {tcl_endOfWord}")
GUI.root.tk.eval("catch {tcl_startOfPreviousWord}")
GUI.root.tk.eval("set tcl_wordchars {[[:alnum:]']}")
GUI.root.tk.eval("set tcl_nonwordchars {[^[:alnum:]']}")
GUI.root.mainloop()

来自 http://wiki.tcl.tk/1655 的注释:

...要更改有效的字符，您必须首先执行类似:

...to change the characters that are valid, you must first do something like:

抓住{tcl_endOfWord}

catch {tcl_endOfWord}

可以在这里研究正则表达式语法:https://www.tcl.tk/man/tcl8.6/TclCmd/re_syntax.htm

The regex syntax can be studied here: https://www.tcl.tk/man/tcl8.6/TclCmd/re_syntax.htm

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