source: vbox/trunk/src/VBox/Additions/x11/x11include/xorg-server-1.13.0/callback.h@ 87454

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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

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provided that the above copyright notice appear in all copies and that
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#ifndef CALLBACK_H
#define CALLBACK_H

#include <X11/X.h>              /* for GContext, Mask */
#include <X11/Xdefs.h>          /* for Bool */
#include <X11/Xproto.h>
#include <X11/Xfuncproto.h>

/*
 *  callback manager stuff
 */

#ifndef _XTYPEDEF_CALLBACKLISTPTR
typedef struct _CallbackList *CallbackListPtr;  /* also in misc.h */

#define _XTYPEDEF_CALLBACKLISTPTR
#endif

typedef void (*CallbackProcPtr) (CallbackListPtr *, pointer, pointer);

extern _X_EXPORT Bool AddCallback(CallbackListPtr * /*pcbl */ ,
                                  CallbackProcPtr /*callback */ ,
                                  pointer /*data */ );

extern _X_EXPORT Bool DeleteCallback(CallbackListPtr * /*pcbl */ ,
                                     CallbackProcPtr /*callback */ ,
                                     pointer /*data */ );

extern _X_EXPORT void _CallCallbacks(CallbackListPtr * /*pcbl */ ,
                                     pointer /*call_data */ );

static inline void
CallCallbacks(CallbackListPtr *pcbl, pointer call_data)
{
    if (!pcbl || !*pcbl)
        return;
    _CallCallbacks(pcbl, call_data);
}

extern _X_EXPORT void DeleteCallbackList(CallbackListPtr * /*pcbl */ );

extern _X_EXPORT void InitCallbackManager(void);

#endif                          /* CALLBACK_H */