Function

Gtk.TreeListModelCreateModelFunc

Declaration

GListModel*
TreeListModelCreateModelFunc (
  GObject* item,
  gpointer user_data
)

Description [src]

Prototype of the function called to create new child models when gtk_tree_list_row_set_expanded() is called.

This function can return NULL to indicate that item is guaranteed to be a leaf node and will never have children. If it does not have children but may get children later, it should return an empty model that is filled once children arrive.

Parameters

`item`	`GObject*`
	The item that is being expanded
	The data is owned by the caller of the function
`user_data`	`gpointer`
	User data passed when registering the function

Return value

Returns: `GListModel*`
The model tracking the children of `item` or `NULL` if `item` can never have children
The caller of the function takes ownership of the data, and is responsible for freeing it
Can be `NULL`