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2.3 A small lexicon of widgets - Part 3

7 Resultats, Darrera modificació: fa 2 anys

racer remembers its **previous** state (using the last_s variable) and restores the field to this state... kinter as tk def digits_only(*args): global last_string string = text.get() if string == ... g.isdigit(): # Field's content is valid. last_string = string else: text.set(last_string) last_string = '' window = tk.Tk() text = tk

2.5 Working with the Canvas

4 Resultats, Darrera modificació: fa 2 anys

= 2.5 Working with the Canvas == Canvas Our last meeting is devoted to the ''Canvas'' – a widget that b... rawing a line, with the difference being that the last segment (connecting the first and the last points) in the chain is drawn **automatically** (you don’t... ed to specify the same point as the first and the last (x,y) pair: <code python> canvas.create_polygon

2.4 Shaping the main window and conversing with the user

1 Resultats, Darrera modificació: fa 2 anys

e provided by you. The icon is transferred by the last method’s argument, but if you want this to work