Gtk.FlowBox.set_filter_func

### Method

# Gtk FlowBoxset_filter_func

#### Declaration [src]

    void
    gtk_flow_box_set_filter_func (
      GtkFlowBox* box,
      GtkFlowBoxFilterFunc filter_func,
      gpointer user_data,
      GDestroyNotify destroy
    )

#### Description [src]

By setting a filter function on the `box` one can decide dynamically which of the children to show.

For instance, to implement a search function that only shows the children matching the search terms.

The `filter_func` will be called for each child after the call, and it will continue to be called each time a child changes (via `gtk_flow_box_child_changed()`) or when `gtk_flow_box_invalidate_filter()` is called.

Note that using a filter function is incompatible with using a model (see `gtk_flow_box_bind_model()`).

#### Parameters

`filter_func`

  Type: `GtkFlowBoxFilterFunc`

  Callback that lets you filter which children to show.

  The argument can be `NULL`.

`user_data`

  Type: `gpointer`

  User data passed to `filter_func`.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`destroy`

  Type: `GDestroyNotify`

  Destroy notifier for `user_data`.