tkinter基本画板.py_tkinter画布绘画基本示例程序

以下是部分代码预览:

""""

   tkinter基本画板.py_tkinter画布绘画基本示例程序

"""

from tkinter import *

b1 = "up"
xold, yold = None, None

def main():
    root = Tk()
    root.title("tinter画布绘画基本示例程序")
    drawing_area = Canvas(root,bg='dodger blue')
    drawing_area.pack()
    drawing_area.bind("", motion)
    pass
    root.mainloop()

def b1down(event):
    global b1
    b1 = "down"           # 相当于落笔                          

def b1up(event):
    global b1, xold, yold
    b1 = "up"
    xold = None           # 相当于抬笔
    yold = None

def motion(event):
    pass
if __name__ == "__main__":
    main()

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