來自Entry Field的python Tkinter get（）值

Question

我從Tkinter（）輸入字段中獲取值時感到困惑。 我有這種代碼......

from Tkinter import*

def valueGET(val1, val2):
    print val1 + "  " + val2

class ContentUI():
def showLogin(self, frame):

        self.contentUI = ContentUI()    

        L1 = Label(frame, text="Name")
        L1.pack( side = LEFT)
        L1.grid()

        E1 = Entry(frame, bd =5)
        E1.pack(side = RIGHT)
        E1.grid()

        L2 = Label(frame, text="Secret")
        L2.pack( side = LEFT)
        L2.grid()       

        E2 = Entry(frame, bd =5, show="*")
        E2.pack(side = RIGHT)
        E2.grid()

        submit = Button(frame, text="Enter", width=15, command=valueGET(E1.get(), E2.get())) 
        submit.grid()

class UIDisplay():
    def play(self):
        root = Tk()

        root.title(title)
        root.geometry(dimension)

        app = Frame(root)

        contentUI = ContentUI()
        contentUI.showLogin(app)

        app.grid()


        root.mainloop()

adkooPlay = UIDisplay()
adkooPlay.play()

但似乎我的valueGET（val1，val2）方法不起作用，它沒有打印值，甚至沒有通過使用Tkinter（）Entry的get（）方法得到它，我做錯了嗎？ 應該怎么做？

提前致謝 ...

Answer 1

甚至在創建submit按鈕之前，代碼調用valueGET 。 然后它將函數的返回值作為command參數傳遞給Button構造函數。

要將該函數注冊為回調，請替換folloiwng行：

submit = Button(frame, text="Enter", width=15, command=valueGET(E1.get(), E2.get())) 

有：

submit = Button(frame, text="Enter", width=15, command=lambda: valueGET(E1.get(), E2.get())) 

Answer 2

您需要在函數的print命令中使用括號

def valueGET(val1, val2):
    print val1 + "  " + val2

Answer 3

from tkinter import *
import tkinter as tk
root =tk.Tk()
mystring =tk.StringVar(root)
def getvalue():
    print(mystring.get())
e1 = Entry(root,textvariable = mystring,width=100,fg="blue",bd=3,selectbackground='violet').pack()
button1 = tk.Button(root, 
                text='Submit', 
                fg='White', 
                bg= 'dark green',height = 1, width = 10,command=getvalue).pack()

root.mainloop()