add background and draw it

journal.py

@@ -5,6 +5,7 @@ import tkinter as tk
 from tkinter import ttk, StringVar
 from tkinter.messagebox import showinfo
 from datetime import datetime
+from PIL import Image, ImageTk
 
 now = datetime.now()
 YEAR = now.strftime("%Y")
@@ -28,12 +29,23 @@ else:
 
 # configure root window
 journal = tk.Tk()
-# set Window to fullscreen (dependend of the actual screensize)
+# label = tk.Label(journal, image=image)
+# label.place(x=0, y=0)
+
+# set window to fullscreen (dependend of the actual screensize) and fill with a background image
+image_location = 'background.jpg'
 width = journal.winfo_screenwidth()
 height = journal.winfo_screenheight()
 journal.geometry("%dx%d" % (width, height))
 journal.title("Ameland Kinderjournal")
 
+img = ImageTk.PhotoImage(Image.open(image_location).resize((width, height), Image.ADAPTIVE))
+label = tk.Label(journal, image=img)
+# Keep a reference in case this code put is in a function.
+label.img = img
+# Place label in center of parent.
+label.place(relx=0.5, rely=0.5, anchor='center')
+
 # store name and message
 name = tk.StringVar()
 message = tk.StringVar()