set_title_widget

Sets the title for the header bar.

When set to `NULL`, the headerbar will display the title of the window it is contained in.

The title should help a user identify the current view. To achieve the same style as the builtin title, use the “title” style class.

You should set the title widget to `NULL`, for the window title label to be visible again.

Parameters:

this	a header bar
title_widget	a widget to use for a title