Package org.gnome.gdk

Interface Device.ToolChangedCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Device

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 Device.ToolChangedCallback
extends FunctionPointer

Functional interface declaration of the ToolChangedCallback callback.

See Also:

• run(org.gnome.gdk.DeviceTool)

Method Summary

Modifier and Type	Method	Description
void	run(DeviceTool tool)	Emitted on pen/eraser devices whenever tools enter or leave proximity.
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 sourceDevice, MemorySegment tool)	The upcall method is called from native code.

Method Details

run

void run(DeviceTool tool)

Emitted on pen/eraser devices whenever tools enter or leave proximity.

upcall

default void upcall(MemorySegment sourceDevice,
 MemorySegment tool)

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