Change the color of a pixel in a canvas, Tkinter, Python

Question

有人知道是否可以在不使用un对象的情况下更改画布中像素的颜色，所以不使用canvas.create_oval或canvas.create_rectangle这样的东西？

Answer 1

There is no way to color a pixel other than to create a 1x1 pixel object of some sort. And yes, at some point you will experience performance problems. The canvas simply wasn't designed to be used this way.

If you're really needing to create a large area in which you can manage individual pixels, you can create a canvas with a single image that is the same size as the canvas. You can then set the color of individual pixels on the image through the photo image interface.

Answer 2

Within tkinter itself, it's impossible.

Even if you manage to change a pixel on canvas window (which is possible with X11 and Windows APIs in a platform-dependent way), you'd have to ensure it's repainted properly.

You can, of course, place a frame of size 1x1 over the canvas, with a background color you want. This way, pixel is "changed" and no canvas object is created. If there's a real (though strange) problem behind a question, this trick could be a solution.