The title should help a user identify the current view. This
supersedes any title set by HeaderBar.setTitle or
HeaderBar.setSubtitle. To achieve the same style as
the builtin title and subtitle, use the “title” and “subtitle”
style classes.
You should set the custom title to NULL, for the header title
label to be visible again.
Sets a custom title for the gtk.HeaderBar
The title should help a user identify the current view. This supersedes any title set by HeaderBar.setTitle or HeaderBar.setSubtitle. To achieve the same style as the builtin title and subtitle, use the “title” and “subtitle” style classes.
You should set the custom title to NULL, for the header title label to be visible again.