问题描述
我正在学习Python，我已经掌握了基本概念，并且已经有了一些命令行程序。我现在正在学习如何使用Tkinter创建GUI。
I'm just learning Python and I have the base concept down, and already a few command line programs. I'm now learning how to create GUIs with Tkinter.
我创建了一个简单的GUI来接受 Entry 小部件中的一些用户信息，然后在用户单击时
I created a simple GUI to accept some user information from a Entry widget, and then, when the user clicks submit, it should pop up a dialog.
对话框应要求输入名和姓氏。
The dialog should ask for the first name and last name.
问题是当用户单击提交时，我不知道如何处理该事件。
The problem is that I don't know how to handle the event when the user clicks submit.
这是我的代码：
from Tkinter import *
class GUI(Frame):
def __init__(self,master=None):
Frame.__init__(self, master)
self.grid()
self.fnameLabel = Label(master, text="First Name")
self.fnameLabel.grid()
self.fnameEntry = Entry(master)
self.fnameEntry.grid()
self.lnameLabel = Label(master, text="Last Name")
self.lnameLabel.grid()
self.lnameEntry = Entry(master)
self.lnameEntry.grid()
self.submitButton = Button(self.buttonClick, text="Submit")
self.submitButton.grid()
def buttonClick(self, event):
""" handle button click event and output text from entry area"""
pass
if __name__ == "__main__":
guiFrame = GUI()
guiFrame.mainloop()
推荐答案
您已经具有事件功能。只需将代码更正为：
You already had your event function. Just correct your code to:
"""Create Submit Button"""
self.submitButton = Button(master, command=self.buttonClick, text="Submit")
self.submitButton.grid()
def buttonClick(self):
""" handle button click event and output text from entry area"""
print('hello') # do here whatever you want
除了 buttonClick（）方法现在在类 __ init __ 方法。这样做的好处是，您可以以编程方式调用该动作。这是OOP编码的GUI中的常规方式。
This is the same as in @Freak's answer except for the buttonClick() method is now outside the class __init__ method. The advantage is that in this way you can call the action programmatically. This is the conventional way in OOP-coded GUI's.
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