glutMenuDestroyFunc man page

glutMenuDestroyFunc ā€” Destruction callback for menus.

Library

OpenGLUT - menucallback

Synopsis

#include <openglut.h>

void
glutMenuDestroyFunc(void( *callback )( void ));

Parameters

callback

Client menu destruction hook.

Description

When a menu is destroyed, OpenGLUT will call this hook, if defined on that menu.

This callback is

not

bound to any window.

This callback

is

bound to a specific menu.

Caveats

For emphasis, we repeat: This callback does not bind to any window.

Todo

What on Earth is rationale for this feature? Menus should only be destroyed when we ask them to be destroyed, or when their window is destroyed. In the former case, we already know that the menu is being destroyed because we requested it. In the latter case, it is easy for the client to track that if they care, via window-destruction callbacks.

See Also

glutCloseFunc(3) glutCreateMenu(3) glutDestroyMenu(3)

Info

August 9, 2018