25 lines
717 B
Python
25 lines
717 B
Python
import random, tkMessageBox
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from Tkinter import *
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window = Tk()
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window.geometry("300x50+100+100")
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options = { "padx":5, "pady":5}
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s=StringVar()
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s.set(1)
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def increase():
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s.set(int(s.get())+1)
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def rand():
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if tkMessageBox.askyesno("Confirmation", "Reset to random value ?"):
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s.set(random.randrange(0,5000))
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def update(e):
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if not e.char.isdigit():
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tkMessageBox.showerror('Error', 'Invalid input !')
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return "break"
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e = Entry(text=s)
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e.grid(column=0, row=0, **options)
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e.bind('<Key>', update)
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b1 = Button(text="Increase", command=increase, **options )
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b1.grid(column=1, row=0, **options)
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b2 = Button(text="Random", command=rand, **options)
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b2.grid(column=2, row=0, **options)
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mainloop()
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