SpinButton.ChangeValueCallback (java-gi API)

All Superinterfaces:: FunctionPointer

Enclosing class:: SpinButton

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 SpinButton.ChangeValueCallback extends FunctionPointer

Functional interface declaration of the ChangeValueCallback callback.

See Also:

Method Summary

Modifier and Type

Method

Description

void

run(ScrollType scroll)

Emitted when the user initiates a value change.

default MemorySegment

toCallback(Arena arena)

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

default void

upcall(MemorySegment sourceSpinButton, int scroll)

The upcall method is called from native code.

Method Details
- run
  
  void run(ScrollType scroll)
  
  Emitted when the user initiates a value change.
  This is a keybinding signal.
  Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically.
  The default bindings for this signal are Up/Down and PageUp/PageDown.
- upcall
  
  default void upcall(MemorySegment sourceSpinButton, int scroll)
  
  The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.ScrollType) is executed.
- toCallback
  
  default MemorySegment toCallback(Arena arena)
  
  Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int) method.
  
  Specified by:
  
  toCallback in interface FunctionPointer
  
  Parameters:
  
  arena - the function pointer will be allocated in this arena
  
  Returns:
  
  the native function pointer