annotate include/SDL_quit.h @ 537:77b05010bb33

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author Sam Lantinga <slouken@libsdl.org>
date Sat, 09 Nov 2002 05:51:13 +0000
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Include file for SDL quit event handling */
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29
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30 #ifndef _SDL_quit_h
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31 #define _SDL_quit_h
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32
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33 /*
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34 An SDL_QUITEVENT is generated when the user tries to close the application
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35 window. If it is ignored or filtered out, the window will remain open.
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36 If it is not ignored or filtered, it is queued normally and the window
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37 is allowed to close. When the window is closed, screen updates will
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38 complete, but have no effect.
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39
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40 SDL_Init() installs signal handlers for SIGINT (keyboard interrupt)
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41 and SIGTERM (system termination request), if handlers do not already
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42 exist, that generate SDL_QUITEVENT events as well. There is no way
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43 to determine the cause of an SDL_QUITEVENT, but setting a signal
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44 handler in your application will override the default generation of
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45 quit events for that signal.
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46 */
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47
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48 /* There are no functions directly affecting the quit event */
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49 #define SDL_QuitRequested() \
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50 (SDL_PumpEvents(), SDL_PeepEvents(NULL,0,SDL_PEEKEVENT,SDL_QUITMASK))
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51
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52 #endif /* _SDL_quit_h */