import tkinter as tk

def place_mouse(widget, x, y):
    widget.event_generate('<Motion>', warp=True, x=x, y=y)


# test
def main(n=0):
    place_mouse(root, n, n)
    if n < 200:
        root.after(12, main, n+1)

root = tk.Tk()
main()
root.mainloop()