如何获取 ttk.Entry 的值并将其显示在消息框中？

Question

我刚开始使用 tkinter 和 python3。我正在使用 pygubu 尝试制作一个非常简单的方法，它从 Entry 小部件中获取输入，并在按下按钮时将其显示在 Messagebox 中。以下是我正在使用的代码：

# command_properties.py
import tkinter as tk
from tkinter import messagebox
import pygubu

# define the function callbacks
def on_button1_click():
    tk_messageBox -message answer -type ok -icon info

class MyApplication(pygubu.TkApplication):

    def _create_ui(self):
        #1: Create a builder
        self.builder = builder = pygubu.Builder()

        #2: Load an ui file
        builder.add_from_file('test.ui')

        #3: Create the widget using self.master as parent
        self.mainwindow = builder.get_object('Frame_1', self.master)

        # Configure callbacks
        callbacks = {
            'on_button1_clicked': on_button1_click
        }

        builder.connect_callbacks(callbacks)


if __name__ == '__main__':
    root = tk.Tk()
    app = MyApplication(root)
    app.run()

这里是ui文件代码：http://pastebin.com/puRbD87m 另外，请告诉我我具体哪里错了。

Answer 1

在类中创建on_button1_click()作为方法然后你可以创建

self.entry_1 = self.builder.get_object('Entry_1', self.master)

并使用

访问文本

self.entry_1.get()

完整示例

import tkinter as tk
import pygubu

class MyApplication(pygubu.TkApplication):

    def _create_ui(self):
        self.builder = pygubu.Builder()

        self.builder.add_from_file('test.ui')

        mainwindow = builder.get_object('mainwindow', master)

        self.entry_1 = self.builder.get_object('Entry_1', self.master) # <- self.entry

        callbacks = {
            'on_button1_clicked': self.on_button1_click # <- self.
        }

        self.builder.connect_callbacks(callbacks)

    def on_button1_click(self): # <- self
        print(self.entry_1.get())

if __name__ == '__main__':
    root = tk.Tk()
    app = MyApplication(root)
    app.run()