annotate include/SDL_loadso.h @ 1348:40d0975c1769

Date: Mon, 6 Feb 2006 11:41:04 -0500 From: "mystml@adinet.com.uy" Subject: [SDL] ALT-F4 using DirectX My game isn't getting SDL_QUIT when I press ALT-F4 using the DirectX driver; it does get SDL_QUIT when I press the red X in the window. I tracked this down to DX5_HandleMessage() in SDL_dx5events.c; WM_SYSKEYDOWN is being trapped and ignored which causes Windows not to post a WM_CLOSE, hence no SDL_QUIT is being generated. The relevant code is this : /* The keyboard is handled via DirectInput */ case WM_SYSKEYUP: case WM_SYSKEYDOWN: case WM_KEYUP: case WM_KEYDOWN: { /* Ignore windows keyboard messages */; } return(0); If I comment the WM_SYSKEYDOWN case, it falls through DefWindowProc() and ALT-F4 starts working again. I'm not sure about the best way to fix this. One option is handling ALT-F4 as a particular case somehow, but doesn't sound good. Another option would be to handle WM_SYSKEYDOWN separately and breaking instead of returning 0, so processing falls through and goes to DefWindowProc which does The Right Thing (TM). This seems to be the minimal change that makes ALT-F4 work and normal keyboard input continues to work. Does this sound reasonable? Am I overlooking anything? Do I submit a patch? --Gabriel
author Sam Lantinga <slouken@libsdl.org>
date Wed, 08 Feb 2006 17:19:43 +0000
parents c9b51268668f
children 67114343400d
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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24 /* System dependent library loading routines */
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25
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26 /* Some things to keep in mind:
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27 - These functions only work on C function names. Other languages may
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28 have name mangling and intrinsic language support that varies from
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29 compiler to compiler.
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30 - Make sure you declare your function pointers with the same calling
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31 convention as the actual library function. Your code will crash
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32 mysteriously if you do not do this.
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33 - Avoid namespace collisions. If you load a symbol from the library,
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34 it is not defined whether or not it goes into the global symbol
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35 namespace for the application. If it does and it conflicts with
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36 symbols in your code or other shared libraries, you will not get
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37 the results you expect. :)
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38 */
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39
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40
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41 #ifndef _SDL_loadso_h
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42 #define _SDL_loadso_h
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44 #include "begin_code.h"
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45 /* Set up for C function definitions, even when using C++ */
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46 #ifdef __cplusplus
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47 extern "C" {
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48 #endif
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49
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50 /* This function dynamically loads a shared object and returns a pointer
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51 * to the object handle (or NULL if there was an error).
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52 * The 'sofile' parameter is a system dependent name of the object file.
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53 */
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54 extern DECLSPEC void * SDLCALL SDL_LoadObject(const char *sofile);
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56 /* Given an object handle, this function looks up the address of the
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57 * named function in the shared object and returns it. This address
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58 * is no longer valid after calling SDL_UnloadObject().
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59 */
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60 extern DECLSPEC void * SDLCALL SDL_LoadFunction(void *handle, const char *name);
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61
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62 /* Unload a shared object from memory */
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63 extern DECLSPEC void SDLCALL SDL_UnloadObject(void *handle);
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65 /* Ends C function definitions when using C++ */
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66 #ifdef __cplusplus
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67 }
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68 #endif
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69 #include "close_code.h"
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71 #endif /* _SDL_loadso_h */