Interface Device.ChangedCallback

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

Functional interface declaration of the ChangedCallback callback.

See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    run()
    Emitted either when the number of either axes or keys changes.
    default MemorySegment
    toCallback(Arena arena)
    Creates a native function pointer to the upcall(MemorySegment) method.
    default void
    upcall(MemorySegment sourceDevice)
    The upcall method is called from native code.

  • Method Details

    • run

      void run()

      Emitted either when the number of either axes or keys changes.

      On X11 this will normally happen when the physical device routing events through the logical device changes (for example, user switches from the USB mouse to a tablet); in that case the logical device will change to reflect the axes and keys on the new physical device.

    • upcall

      default void upcall(MemorySegment sourceDevice)
      The upcall method is called from native code. The parameters are marshaled and run() is executed.

    • toCallback

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