Package org.gnome.gtk

Interface EventControllerScroll.ScrollBeginCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

EventControllerScroll

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 EventControllerScroll.ScrollBeginCallback
extends FunctionPointer

Functional interface declaration of the ScrollBeginCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
void	run()	Signals that a new scrolling operation has begun.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceEventControllerScroll)	The upcall method is called from native code.

Method Details

run

void run()

Signals that a new scrolling operation has begun.

It will only be emitted on devices capable of it.

upcall

default void upcall(MemorySegment sourceEventControllerScroll)

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(java.lang.foreign.MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer