Package org.gnome.gtk

Interface Application.QueryEndCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Application

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 Application.QueryEndCallback
extends FunctionPointer

Functional interface declaration of the QueryEndCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
void	run()	Emitted when the session manager is about to end the session.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceApplication)	The upcall method is called from native code.

Method Details

run

void run()

Emitted when the session manager is about to end the session.

This signal is only emitted if Gtk.Application:register-session is TRUE. Applications can connect to this signal and call Application.inhibit(org.gnome.gtk.Window, java.util.Set<org.gnome.gtk.ApplicationInhibitFlags>, java.lang.String) with GTK_APPLICATION_INHIBIT_LOGOUT to delay the end of the session until state has been saved.

upcall

default void upcall(MemorySegment sourceApplication)

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