ListBoxUpdateHeaderFunc

Description:

[ CCode ( instance_pos = 2.9 ) ]
public delegate void ListBoxUpdateHeaderFunc (ListBoxRow row, ListBoxRow? before)

Whenever row changes or which row is before row changes this is called, which lets you update the header on row.

You may remove or set a new one via [[email protected]_header] or just change the state of the current header widget.

row	the row to update
before	the row before `row`, or null if it is first
user_data	user data

Namespace: Gtk

Package: gtk4