Python tkinter 更改 如何在不使用画布/小部件的情况下更改 cursor？

Question

I want to change how to cursor looks while the mouse is in a range of pixels, and when it gets out of that range, it changes to normal (I dont want to use the canvas/other widgets "cursor=" kwarg)

from tkinter import*

root = Tk()
root.geometry('500x500+0+0')

def change_cursor(event):
    if event.x in range(450,500):
        #change how the cursor looks


root.bind('<B1-Motion>', change_cursor)
root.mainloop()

Answer 1

Unfortunately, the only way to do what you want is to use root.config(cursor="cursor_name") . "watch" cursor_name is for the busy cursor and "" cursor_name is for the normal cursor.

Also you need to change the "<B1-Motion>" event (mouse dragging , with left mouse button pressed) to just "<Motion>" event (mouse movement, it's not necessary to press any mouse buttons).

And, of course, you need to change the cursor back ( else block)

Here's the fixed code:

from tkinter import*


root = Tk()
root.geometry("500x500+0+0")

def change_cursor(event):
    if event.x in range(450, 500):
        root.config(cursor="watch")
    else:
        root.config(cursor="")


root.bind("<Motion>", change_cursor)
root.mainloop()