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Date: Thu, 17 Apr 2003 23:27:34 -0400 From: Darrell Walisser Subject: Yet another OS X cursor bug The synopsis: 1. Call SDL_ShowCursor(0); 2. Call SDL_SetVideoMode(); 3. Call SDL_GetEvent(); 3. Call SDL_ShowCursor(1); The result: Sometimes the cursor doesn't come back! Ack! Oddly enough, it does come back when mousing over the dock or clicking in the menu bar. But that's besides the point. The reason why this is happening is a flaw in the handling of activation/deactivation events. The short explanation is that the HideCursor() and ShowCursor() calls must be balanced, but if the cursor was initially hidden, HideCursor() was called again on the activate event - so now the next ShowCursor() fails (as does the next, and the next, for some reason). So, here's the patch. All it does is keep track of the HideCursor()/ShowCursor() calls so that they will always be balanced.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 20 Apr 2003 05:41:16 +0000
parents 9154ec9ca3d2
children b8d311d90021
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

#ifndef _SDL_thread_h
#define _SDL_thread_h

/* Header for the SDL thread management routines 

	These are independent of the other SDL routines.
*/

#include "SDL_main.h"
#include "SDL_types.h"

/* Thread synchronization primitives */
#include "SDL_mutex.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/* The SDL thread structure, defined in SDL_thread.c */
struct SDL_Thread;
typedef struct SDL_Thread SDL_Thread;

/* Create a thread */
extern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (*fn)(void *), void *data);

/* Get the 32-bit thread identifier for the current thread */
extern DECLSPEC Uint32 SDLCALL SDL_ThreadID(void);

/* Get the 32-bit thread identifier for the specified thread,
   equivalent to SDL_ThreadID() if the specified thread is NULL.
 */
extern DECLSPEC Uint32 SDLCALL SDL_GetThreadID(SDL_Thread *thread);

/* Wait for a thread to finish.
   The return code for the thread function is placed in the area
   pointed to by 'status', if 'status' is not NULL.
 */
extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread *thread, int *status);

/* Forcefully kill a thread without worrying about its state */
extern DECLSPEC void SDLCALL SDL_KillThread(SDL_Thread *thread);


/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* _SDL_thread_h */