Package org.gnome.gtk

Interface EventControllerLegacy.EventCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

EventControllerLegacy

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 EventControllerLegacy.EventCallback
extends FunctionPointer

Functional interface declaration of the EventCallback callback.

See Also:

• run(org.gnome.gdk.Event)

Method Summary

Modifier and Type	Method	Description
boolean	run(Event event)	Emitted for each GDK event delivered to controller.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment sourceEventControllerLegacy, MemorySegment event)	The upcall method is called from native code.

Method Details

run

boolean run(Event event)

Emitted for each GDK event delivered to controller.

upcall

default int upcall(MemorySegment sourceEventControllerLegacy,
 MemorySegment event)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gdk.Event) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, 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