Package org.gnome.gtk

Interface FontButton.ActivateCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

FontButton

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 FontButton.ActivateCallback
extends FunctionPointer

Functional interface declaration of the ActivateCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
void	run()	Emitted to when the font button is activated.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceFontButton)	The upcall method is called from native code.

Method Details

run

void run()

Emitted to when the font button is activated.

The ::activate signal on GtkFontButton is an action signal and emitting it causes the button to present its dialog.

upcall

default void upcall(MemorySegment sourceFontButton)

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