Question

我正在创建一个单词编辑器，其中我想在顶部的任务栏具有一个OptionMenu小部件，该小部件具有3个可能的选择-“右”，“左”和“中心”。当选择这些选项之一时，它应采用该选项的值，并使用.tag_add，.insert和.tag_config将文本框窗口设置为每个值。到目前为止，这是我的代码。所有这些都在名为Task1的框架内，而文本框本身在名为label_frame的框架内。接下来，任务栏和OptionMenu小部件位于名为Taskbar1的框架内。这是我的完整代码，可以使GUI工作。

from tkinter import *
from tkinter import ttk
from tkinter.scrolledtext import ScrolledText
import tkinter as tk
from tkinter import Menu, filedialog

root = Tk()

class ToDoList(tk.Frame):
    def __init__(self, master):
        root.columnconfigure(2, weight=1)
        root.rowconfigure(1, weight=1)


root.title("To - Do List")
root.geometry("1200x600")
root.configure(background = "white")
# Variable list:

style = ttk.Style()                     
current_theme =style.theme_use()
style.theme_settings(current_theme, {"TNotebook.Tab": {"configure": {"padding": [20, 5], "background" : "white"}}})
style.theme_settings(current_theme, {"TNotebook" : {"configure" : {"tabposition" : "wn", "padding" : (0, 5)}}})
style.theme_settings(current_theme, {"TNotebook.Window" : {"configure" : {"width" : 500}}})

TasksList = ttk.Notebook(root)
Task1 = tk.Frame(TasksList, bg='white', height = 1000, width = 3000)

Taskbar1 = tk.Frame(Task1, bg="white", width=176)
Taskbar1.pack()
Button(Taskbar1, text="Hello", highlightthickness=0, borderwidth=0, highlightbackground = "white").pack(pady=[4, 5], padx=[3,3], ipadx = [2], ipady = [2], side = LEFT)


JustifyOptionList = ["right", "center", "left"]
JustifyDefaultOption=StringVar(Taskbar1)
JustifyDefaultOption.set(JustifyOptionList[0]) # default choice
JustifyOption= OptionMenu(Taskbar1, JustifyDefaultOption, *JustifyOptionList)
JustifyOption.pack(side = LEFT)

JustifyDefaultOption



entry1 = Entry(Task1, width = 60, font = "Calibri 20", highlightthickness = 0, justify = "center", selectborderwidth = 0, bd = 1, borderwidth = 0, relief = FLAT)
entry1.pack()

label_frame = tk.Frame(Task1, width=1000,height=550,bg="blue")
label_frame.pack()
label_frame.columnconfigure(0, weight=2)  
label_frame.rowconfigure(0, weight = 1)
label_frame.pack_propagate(0)



# create a Text widget
root.txt = tk.Text(label_frame)
root.txt.config(font=("TkMenuFont"), undo=True, wrap='word', highlightthickness=0, borderwidth=0, bd = 1, highlightbackground = "white", spacing1 = 5, spacing2 = 5, spacing3 = 5)
root.txt.tag_config(JustifyDefaultOption.get(), justify = JustifyDefaultOption.get())
root.txt.insert("1.0", "Please enter your notes here")
root.txt.tag_add(JustifyDefaultOption.get(), "1.0", "end")
root.txt.pack(expand=TRUE, fill = "both", side = LEFT)

# create a Scrollbar and associate it with txt
scrollb = tk.Scrollbar(label_frame, command=root.txt.yview, width = 16, bg = "white", troughcolor = "white", highlightbackground = "white")
scrollb.pack(fill = Y, side = RIGHT)
root.txt['yscrollcommand'] = scrollb.set






Task2 = tk.Frame(TasksList, bg='white')
text=ScrolledText(Task2, width = 176, height = 120, font = "TkMenuFont")
text.grid(row = 2, column = 0)
entry2 = Entry(Task2, width = 179, font = "TkMenuFont")
entry2.grid(row=0, column=0, sticky = W)


Task3 = tk.Frame(TasksList, bg = "white")
text=ScrolledText(Task3, width = 176, height = 120, font = "TkMenuFont")
text.grid(row = 2, column = 0)
entry3 = Entry(Task3, width = 179, font = "TkMenuFont")
entry3.grid(row=0, column=0, sticky = W)


TasksList.add(Task1,text = 'Click Here In Order To Read The Instructions')
TasksList.add(Task2, text = 'Two Two Two Two Two Two'[0: 40] + '...')
TasksList.add(Task3, text = "Three Three Three Three Three Three Three Extra"[0 : 40] + '...')
TasksList.grid(row=1, column=0, sticky=N+W, columnspan=3)


Button(root, text = "WELCOME", borderwidth=0, highlightthickness=0).grid(row=0, column=1, sticky=E, ipady = [5])



Label(text="HELLO", borderwidth=0, highlightthickness=0).grid(row=0, column=0, sticky=W, ipady = [5])

root.mainloop()

我对此感到困惑的事实是，即使我有一个OptionList记录了用户选择的选项，即使我正在使用.get函数来设置该选项也没有在辩解设置中设置进行用户的证明设置并将其应用到文本框。

Answer 1

问题在于，每次选项更改时，您都不会更改对齐设置。当.get值更改时，用StringVar初始化不会使值更新。

将新的对正设置应用于文本的一种方法是使用command的{{1}}选项来做到这一点：

OptionMenu

如何在Python Tkinter中使用OptionMenu在文本框中设置对齐选项

1 个答案: