computing of height of textbox relative to screenheight of monitor

journal.py

@@ -29,6 +29,7 @@ else:
         pass
 
 journal = tk.Tk()
+journal.attributes('-alpha', 0.5)
 
 #
 # set window to fullscreen (dependend of the actual screensize) and fill with a background image
@@ -40,9 +41,11 @@ 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.
+# Keep a reference in case this code is put in a function.
 label.img = img
+
 #
 # Place label in center of parent.
 label.place(relx=0.5, rely=0.5, anchor='center')
@@ -69,10 +72,9 @@ name_entry.focus()
 # textbox
 message_label = tk.Label(journal, text = "Deine Nachricht:")
 message_label.grid(column = 0, row = 1, sticky = 'w', padx = 5)
-message_text = tk.Text(journal, height = 50)
+message_text = tk.Text(journal, height = height-1400)
 message_text.grid(column = 0, row = 2, padx = 5)
 
-
 def send_button_clicked():
     with open(journal_filename_path, "a") as journal_of_the_day:
         journal_of_the_day.write("Eintrag von: " + name.get() + " um " + datetime.now().strftime("%Y-%m-%d %H:%M:%S") + "\n")
@@ -98,7 +100,6 @@ button_send = ttk.Button(
 )
 button_send.grid(sticky = 'w', column = 0, row = 3, ipady = 8, padx = 5, pady = 5)
 
-
 #
 # Quit Button
 button_quit = ttk.Button(