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楼主 |
发表于 2018-4-22 16:00:45
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from tkinter import *
master = Tk()
frame = Frame(master)
frame.pack(padx=10,pady=10)
v1 = StringVar()
v2 = StringVar()
v3 = StringVar()
def test(content):
return content.isdigit()
testCMD = master.register(test)
e1 = Entry(master,width=10,textvariable=v1,validate="key",\
validatecommand=(testCMD, '%P')).grid(row=0,column=0)
Label(master,text="+").grid(row=0,column=1)
e2 = Entry(master,width=10,textvariable=v2,validate="key",\
validatecommand=(testCMD,'%P')).grid(row=0,column=2)
Label(master,text="=").grid(row=0,column=3)
e3 = Entry(master,width=10,textvariable=v3,state="readonly").grid(row=0,column=3)
def calc():
result = int(v1.get())+int(v2.get())
v3.set(str(result))
Button(master,text="计算结果",command = calc).grid(row=1,column=2,pady=5)
mainloop()
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