### Function

# GtkTickCallback

#### Declaration

    gboolean
    (* GtkTickCallback) (
      GtkWidget* widget,
      GdkFrameClock* frame_clock,
      gpointer user_data
    )

#### Description [src]

Callback type for adding a function to update animations. See gtk_widget_add_tick_callback().

#### Parameters

`widget`

  Type: `GtkWidget`

  The widget.

  The data is owned by the caller of the function.

`frame_clock`

  Type: `GdkFrameClock`

  The frame clock for the widget (same as calling gtk_widget_get_frame_clock())

  The data is owned by the caller of the function.

`user_data`

  Type: `gpointer`

  User data passed to gtk_widget_add_tick_callback().

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

#### Return value

Type: `gboolean`

`G_SOURCE_CONTINUE` if the tick callback should continue to be called, `G_SOURCE_REMOVE` if the tick callback should be removed.