Slide show program, event processing

I need the images to change if the cursor is inside the window without moving, but I managed to make the image changes only if the cursor is moving inside the window, how can I change the code?

from itertools import cycle
import tkinter as tk
from PIL import ImageTk, Image
import glob

image_files = glob.glob("*.jpg")
root = tk.Toplevel()
root.geometry("1600x900")
pictures = cycle((ImageTk.PhotoImage(file=image), image) for image in image_files)                              
picture_display = tk.Label(root)
picture_display.pack()
def show_slides(event):           
    img_object, img_name = next(pictures)
    root.after(500, picture_display.config(image=img_object))  
root.bind("<Motion>", show_slides)
root.mainloop() 

Answer

You can calculate cursor position in loop and show image if it’s located within tkinter window:

import glob
import tkinter as tk
from PIL import ImageTk
from itertools import cycle

class App(object):
    def __init__(self):
        self.root = tk.Tk()
        self.root.geometry('900x600')
        self.lbl = tk.Label(self.root)
        self.lbl.pack()
        files = glob.glob('*.jpg')
        self.images = cycle((ImageTk.PhotoImage(file=f), f) for f in files)
        self.show()
        self.root.mainloop()

    def show(self):
        abs_coord_x = self.root.winfo_pointerx() - self.root.winfo_rootx()
        abs_coord_y = self.root.winfo_pointery() - self.root.winfo_rooty()
        if 0 <= abs_coord_x <= self.root.winfo_width() and 0 <= abs_coord_y <= self.root.winfo_height():
            img_object, img_name = next(self.images)
            self.lbl.config(image=img_object)
        self.root.after(1000, self.show)

App()