Interface ScrolledWindow.ScrollChildCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

ScrolledWindow

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 ScrolledWindow.ScrollChildCallback
extends FunctionPointer

Functional interface declaration of the ScrollChildCallback callback.

See Also:

• run(ScrollType, boolean)

Method Summary

Modifier and Type	Method	Description
boolean	run(ScrollType scroll, boolean horizontal)	Emitted when a keybinding that scrolls is pressed.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, int, int) method.
default int	upcall(MemorySegment sourceScrolledWindow, int scroll, int horizontal)	The upcall method is called from native code.

Method Details

run

boolean run(ScrollType scroll,
 boolean horizontal)

Emitted when a keybinding that scrolls is pressed.

This is a keybinding signal.

The horizontal or vertical adjustment is updated which triggers a signal that the scrolled window’s child may listen to and scroll itself.

upcall

default int upcall(MemorySegment sourceScrolledWindow,
 int scroll,
 int horizontal)

The upcall method is called from native code. The parameters are marshaled and run(ScrollType, boolean) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(MemorySegment, int, int) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer