PRACTICA 24: DIBUJANDO CON EL MOUSE EN PYTHON

       
from Tkinter import *

canvas_width= 500
canvas_height= 150


def paint(event):
    x1, y1 =(event.x-1), (event.y-1)
    x2, y2 =(event.x+1), (event.y+1)
    panel.create_oval(x1, y1, x2, y2, fill= 'red')

def clearall():
    panel.delete('all')


master=Tk()
master.title('pinta con el mouse')
panel = Canvas(master, width=canvas_width, height=canvas_height)
panel.pack(expand=YES, fill= BOTH)
panel.bind('', paint)

mensaje= Label(master, text= 'Presione o arrastre con el mouse')
mensaje.pack(side=BOTTOM)

boton= Button(master, text='Borrar', command= clearall)
boton.pack(side= BOTTOM)

master.mainloop()