How to pack a button in a HeaderBar using Genie?

Question

Background

My aim is to improve a little text editor as an exercise. It is running fine after the HeaderBar was added, however I can\'t find a way to pack buttons in i

Answer 1

You are trying to call pack_start on the button, not on the headerbar:

// Add everything to the toolbar
open_button.pack_start ()

The correct code is:

headerbar.pack_start (open_button)