Interface Assistant.PrepareCallback

All Superinterfaces:
FunctionPointer
Enclosing class:
Assistant
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface @Deprecated public static interface Assistant.PrepareCallback extends FunctionPointer
Deprecated.

Functional interface declaration of the PrepareCallback callback.

See Also:

  • Method Details

    • run

      @Deprecated void run(@Nullable Widget page)
      Deprecated.
      This widget will be removed in GTK 5

      Emitted when a new page is set as the assistant's current page, before making the new page visible.

      A handler for this signal can do any preparations which are necessary before showing page.

    • upcall

      default void upcall(MemorySegment sourceAssistant, MemorySegment page)
      Deprecated.
      The upcall method is called from native code. The parameters are marshaled and run(Widget) is executed.

    • toCallback

      default MemorySegment toCallback(Arena arena)
      Deprecated.
      Creates a native function pointer to the upcall(MemorySegment, MemorySegment) method.
      Specified by:
      toCallback in interface FunctionPointer
      Parameters:
      arena - the arena in which the function pointer is allocated
      Returns:
      the native function pointer