Package org.gnome.gtk

Interface EventControllerFocus.LeaveCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

EventControllerFocus

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 EventControllerFocus.LeaveCallback
extends FunctionPointer

Functional interface declaration of the LeaveCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
void	run()	Emitted whenever the focus leaves the widget hierarchy that is rooted at the widget that the controller is attached to.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceEventControllerFocus)	The upcall method is called from native code.

Method Details

run

void run()

Emitted whenever the focus leaves the widget hierarchy that is rooted at the widget that the controller is attached to.

Note that this means you may not get a ::leave signal even though the focus moves away from the widget, in certain cases (such as when the focus moves from the widget to a descendent). If you are interested in these cases, you can monitor the Gtk.EventControllerFocus:is-focus property for changes.

upcall

default void upcall(MemorySegment sourceEventControllerFocus)

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