Package org.gnome.gobject

Interface SignalGroup.BindCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

SignalGroup

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 SignalGroup.BindCallback
extends FunctionPointer

Functional interface declaration of the BindCallback callback.

See Also:

• run(org.gnome.gobject.GObject)

Method Summary

Modifier and Type	Method	Description
void	run(GObject instance)	This signal is emitted when GSignalGroup:target is set to a new value other than null.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceSignalGroup, MemorySegment instance)	The upcall method is called from native code.

Method Details

run

void run(GObject instance)

This signal is emitted when GSignalGroup:target is set to a new value other than null. It is similar to GObject::notify on target except it will not emit when GSignalGroup:target is null and also allows for receiving the GObject without a data-race.

upcall

default void upcall(MemorySegment sourceSignalGroup,
 MemorySegment instance)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gobject.GObject) 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