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view src/events/SDL_events_c.h @ 4168:69bcba65c388 SDL-1.2

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Fixed bug #526 Comment #1 From Simon Howard 2009-03-20 16:50:56 Hi, I'm the author of Chocolate Doom, one of the other source ports that James mentioned. This is a patch against the current SVN version of SDL 1.2 that fixes the bug. It has been tested and hopefully should be obviously correct from examining the changes. I'll give a brief explanation. When the palette is set with SDL_SetPalette, the IDirectDrawPalette_SetEntries DirectX function is invoked. However, when this happens, a WM_PALETTECHANGED message is sent to the window. A WM_PALETTECHANGED message can also be received if the palette is changed for some other reason, like if the system palette is changed. Therefore, the palette change handler (DX5_PaletteChanged) has code to deal with this case. It distinguishes "expected" palette changes (set with SDL_SetPalette) from "unexpected" palette changes using the colorchange_expected variable, which is set before calling IDirectDrawPalette_SetEntries. However, the code to set this variable is missing in the fullscreen code path. By setting this variable, the palette change is handled properly and the freezes go away.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 13 Apr 2009 00:53:12 +0000
parents a1b03ba2fcd0
children 429c8dd3175d
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/* Useful functions and variables from SDL_events.c */
#include "SDL_events.h"

/* Start and stop the event processing loop */
extern int SDL_StartEventLoop(Uint32 flags);
extern void SDL_StopEventLoop(void);
extern void SDL_QuitInterrupt(void);

extern void SDL_Lock_EventThread(void);
extern void SDL_Unlock_EventThread(void);
extern Uint32 SDL_EventThreadID(void);

/* Event handler init routines */
extern int  SDL_AppActiveInit(void);
extern int  SDL_KeyboardInit(void);
extern int  SDL_MouseInit(void);
extern int  SDL_QuitInit(void);

/* Event handler quit routines */
extern void SDL_AppActiveQuit(void);
extern void SDL_KeyboardQuit(void);
extern void SDL_MouseQuit(void);
extern void SDL_QuitQuit(void);

/* The event filter function */
extern SDL_EventFilter SDL_EventOK;

/* The array of event processing states */
extern Uint8 SDL_ProcessEvents[SDL_NUMEVENTS];

/* Internal event queueing functions
   (from SDL_active.c, SDL_mouse.c, SDL_keyboard.c, SDL_quit.c, SDL_events.c)
 */
extern int SDL_PrivateAppActive(Uint8 gain, Uint8 state);
extern int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative,
						Sint16 x, Sint16 y);
extern int SDL_PrivateMouseButton(Uint8 state, Uint8 button,Sint16 x,Sint16 y);
extern int SDL_PrivateKeyboard(Uint8 state, SDL_keysym *key);
extern int SDL_PrivateResize(int w, int h);
extern int SDL_PrivateExpose(void);
extern int SDL_PrivateQuit(void);
extern int SDL_PrivateSysWMEvent(SDL_SysWMmsg *message);

/* Used by the activity event handler to remove mouse focus */
extern void SDL_ResetMouse(void);

/* Used by the activity event handler to remove keyboard focus */
extern void SDL_ResetKeyboard(void);

/* Used by the event loop to queue pending keyboard repeat events */
extern void SDL_CheckKeyRepeat(void);

/* Used by the OS keyboard code to detect whether or not to do UNICODE */
#ifndef DEFAULT_UNICODE_TRANSLATION
#define DEFAULT_UNICODE_TRANSLATION 0	/* Default off because of overhead */
#endif
extern int SDL_TranslateUNICODE;