GUI的最终选择Tkinter模块练习篇

一、Canvas画布练习

1）简单的绘制图框

from tkinter import *
# 构建一个窗口
tk = Tk()
# 画布
canvas= Canvas(tk,width=400,height=400) # 单位像素
canvas.pack()
def python():   # 槽函数
    print("very good")
btn = Button(tk,text="oldboyedu",command=python)
# 显示窗口
btn.pack()

canvas.create_arc(20,20,100,50,extent=145,style=ARC)
 #  20    20     100        50           145
 #  x轴  y轴    x走了100   y走了50    角度145
canvas.create_rectangle(10,10,50,50,fill="green")
canvas.create_polygon(200,30,240,40,120,100,150,120,fill="red",outline="black")

# 运行窗口
tk.mainloop()

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2）循环随机绘制图框

from tkinter import *
import random
# 构建一个窗口
tk = Tk()
# 画布
canvas= Canvas(tk,width=400,height=400) # 单位像素
canvas.pack()

myColor = ["red","orange","yellow","green","cyan","blue","purple"]

def random_rectangle(width,height,myColor):
    x = random.randrange(width)
    y = random.randrange(width)
    x1 = x + random.randrange(height)
    y1 = y + random.randrange(height)
    canvas.create_rectangle(x,y,x1,y1,fill=myColor,stipple="gray12",outline=myColor,dash=10)
    # 循环200个随机矩形
for nums in range(100):
    random_rectangle(200,200,myColor[nums%7])

tk.mainloop()

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