/*
Simple DirectMedia Layer
- Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
+ Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
3. This notice may not be removed or altered from any source distribution.
*/
-#ifndef _SDL_timer_h
-#define _SDL_timer_h
+#ifndef SDL_timer_h_
+#define SDL_timer_h_
/**
* \file SDL_timer.h
/**
* \brief Add a new timer to the pool of timers already running.
*
- * \return A timer ID, or NULL when an error occurs.
+ * \return A timer ID, or 0 when an error occurs.
*/
extern DECLSPEC SDL_TimerID SDLCALL SDL_AddTimer(Uint32 interval,
SDL_TimerCallback callback,
#endif
#include "close_code.h"
-#endif /* _SDL_timer_h */
+#endif /* SDL_timer_h_ */
/* vi: set ts=4 sw=4 expandtab: */