Question

我正在使用tkinter为一些Python脚本创建一个小GUI。对于此GUI，我需要一个名为Combobox的{{1}}，其中包含三个选项：

combo（用户不想提交数据）
"none"（用户只想提交一个值）
"constant"（用户想要提交多个值）

根据"adjustable"中的选择，应该有不同数量的委托出现。第一个选项应该不显示任何条目（并删除所有＆＃34;剩余的＆＃34; entrys），第二个应该只显示一个条目，第三个应该显示两个人。对我来说创建这些托管没有问题，但我不知道如何让它们消失一旦创建它们，它们一直保持到GUI为止闭合。

我试过这样的事情：

combo

但正如我之前所说，一旦创建了一个条目，它就不再消失了。一世还尝试了import tkinter as tk master = tk.Tk() var1 = tk.StringVar() var2 = tk.StringVar() def submit(): if choice.get() == "none": # all entry boxes schould disappear entry1.destroy() entry2.destroy() if choice.get() == "constant": # only 1 entry box schould be visible entry1 = tk.Entry(master, textvariable = var1) entry1.grid(column = 0, row = 1) entry2.destroy() if choice.get() == "adjustable": # all entry boxes should be visible entry1 = tk.Entry(master, textvariable = var1) entry1.grid(column = 0, row = 1) entry2 = tk.Entry(master, textvariable = var1) entry2.grid(column = 0, row = 2) choice = tk.StringVar(value = "none") combo = ttk.Combobox(master, textvariable = choice, state = "readonly") combo["values"] = ("none", "constant", "adjustable") combo.grid(column = 0, row = 0) action = tk.Button(master, text = "confirm", command = submit) action.grid(column=1, row=0) master.mainloop() entry.grid_forget() {}} {}} 没有工作。

我还尝试在entry.destroy()之外声明entry1和entry1，但后来我一旦它们被摧毁，我们就不知道如何重新创造它们。

Answer 1

感谢jasonharper的帮助，我在另一个脚本工作时找到了解决方案。代码看起来像这样：

import tkinter as tk
from tkinter import ttk

master = tk.Tk()

var1 = tk.StringVar()
var2 = tk.StringVar()

def submit():
    if choice.get() == "none": # all entry boxes schould disappear

        entry1.grid_remove()

        entry2.grid_remove()

    if choice.get() == "constant": # only 1 entry box schould be visible

        entry1.grid(column = 0, row = 1)

        entry2.grid_remove()

    if choice.get() == "adjustable": # all entry boxes should be visible

        entry1.grid(column = 0, row = 1)

        entry2.grid(column = 0, row = 2)


choice = tk.StringVar(value = "none")

combo = ttk.Combobox(master, textvariable = choice, state = "readonly")
combo["values"] = ("none", "constant", "adjustable")
combo.grid(column = 0, row = 0)

entry1 = tk.Entry(master, textvariable = var1)
entry2 = tk.Entry(master, textvariable = var2)

action = tk.Button(master, text = "confirm", command = submit)
action.grid(column=1, row=0)

master.mainloop()

现在所有的托管都会在需要时被删除或创建。删除主题中的文本您只需添加entry.delete(0,"end")。我希望这也能帮助别人。

tkinter：动态创建和删除条目

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