update

module-inspector/module-inspector.py

@@ -2,6 +2,7 @@ import sys
 import tkinter as tk
 from tkinter import ttk
 
+
 def on_treeview_heading_click(column, tree):
     data = [(tree.set(child, column), child) for child in tree.get_children("")]
     reverse = (column == tree.heading(column)["text"]) and not column.startswith("_")
@@ -38,6 +39,10 @@ tree.column('#0', width=20, stretch=False)
 
 tree.tag_configure("selected", background="#ccc")
 
+# Call the on_treeview_heading_click function when a column heading is clicked
+for col in tree["columns"]:
+    tree.heading(col, text=col, anchor=tk.W, command=lambda col=col: on_treeview_heading_click(col, tree))
+root.mainloop()
 # Call the on_treeview_heading_click function when a column heading is clicked
 for col in tree["columns"]:
     tree.heading(col, text=col, anchor=tk.W, command=lambda col=col: on_treeview_heading_click(col, tree))