我正在尝试在画布上创建一个Tk矩形,以在单击时更改其颜色。现在,单击矩形时没有发生颜色变化。我需要做些什么不同的事情?
顺便说一下,这是在Python3.5中。
from tkinter import *
def set_color(id):
global alive, colors
alive = not alive
col = colors[alive]
canvas.itemconfigure(id, fill=col)
root = Tk()
canvas = Canvas(root)
canvas.grid(column=1, row=1, sticky=(N, S, E, W))
alive = False
colors = {True: "green", False: "red"}
id = canvas.create_rectangle((1, 1, 60, 60), fill="red")
canvas.tag_bind(id, "<ButtonPress-1>", set_color)
root.mainloop()
将其包装在一个类中,并根据需要创建尽可能多的实例。http://www.freenetpages.co.uk/hp/alan.gauld/tutclass.htm
class OneSquare():
def __init__(self, can, start_x, start_y, size):
self.can=can
self.id = self.can.create_rectangle((start_x, start_y,
start_x+size, start_y+size), fill="red")
self.can.tag_bind(self.id, "<ButtonPress-1>", self.set_color)
self.color_change=True
def set_color(self, event=None):
self.color_change = not self.color_change
color="red"
if not self.color_change:
color="green"
self.can.itemconfigure(self.id, fill=color)
root = Tk()
canvas = Canvas(root)
canvas.grid(column=1, row=1, sticky=(N, S, E, W))
OS1=OneSquare(canvas, 1, 1, 60)
OS2=OneSquare(canvas, 90, 1, 30)
OS3=OneSquare(canvas, 1, 90, 90)
Button(root, text="Exit", bg="orange",
command=root.quit).grid(row=2)
root.mainloop()
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我来说两句