如何使Tkinter画布矩形透明？

如何使Tkinter画布矩形透明？

您可以使用透明图像来模拟结果。使用

Pillow

创建透明的图像，然后用

canvas.create_image(...)

画它。下面是一个示例代码：

from tkinter import *from PIL import Image, ImageTkroot = Tk()images = []  # to hold the newly created imagedef create_rectangle(x1, y1, x2, y2, **kwargs):    if 'alpha' in kwargs:        alpha = int(kwargs.pop('alpha') * 255)        fill = kwargs.pop('fill')        fill = root.winfo_rgb(fill) + (alpha,)        image = Image.new('RGBA', (x2-x1, y2-y1), fill)        images.append(ImageTk.PhotoImage(image))        canvas.create_image(x1, y1, image=images[-1], anchor='nw')    canvas.create_rectangle(x1, y1, x2, y2, **kwargs)canvas = Canvas(width=300, height=200)canvas.pack()create_rectangle(10, 10, 200, 100, fill='blue')create_rectangle(50, 50, 250, 150, fill='green', alpha=.5)create_rectangle(80, 80, 150, 120, fill='#800000', alpha=.8)root.mainloop()