python tkinter中的动态表单小部件交互

条目 txt1 在函数内部创建,并且在函数结束时对其引用进行垃圾收集。有一种方法你可以绕过它来申报 StringVar() 在全局范围中,然后将其与条目关联。

from tkinter import Tk, Label, Button, Entry, Menu, StringVar

def btn_clientadd():
    print(client_string.get()) # Get contents of StringVar

def addclient():
    lbl1 = Label(window, text="Client Name :")
    lbl1.grid(row=1,column=1,padx=7,pady=7,sticky='e')

    # Create entry and associate it with a textvariable
    txt1 = Entry(window, textvariable=client_string)
    txt1.grid(row=1, column=2)
    txt1.focus()

    btn = Button(window, text="Add Client", command=btn_clientadd)
    btn.grid(row=2,column=2,padx=7,pady=7)

window = Tk()
window.geometry('400x200')

menu = Menu(window)
new_item1 = Menu(menu)
menu.add_cascade(label='ClientMaster', menu=new_item1)
new_item1.add_command(label='Add New Client', command=addclient)
window.config(menu=menu)

client_string = StringVar() # StringVar to associate with entry

window.mainloop()