Mercurial > sdl-ios-xcode
annotate include/SDL_main.h @ 1259:36f24cdfcda7
te: Thu, 17 Apr 2003 11:25:26 -0700
From: "Jim"
Subject: [SDL] Frame buffer patches...
Would seem that GCC 3.2.2 promotes all signed values to unsigned if any single vlaue is unsigned in an expression...
for instance when calculating an elo touch position....evertyhign is an (int) except for cach_vinfo.xres which is unsigned. THerefore if y
ou reverse the SDL_ELO_MIN_X and SDL_ELO_MAX_X values the resulging negative value pegs the expression to it's max. Attached it the accumu
lated patch to typecast the unsigned values to (int)
- *dx = (cache_vinfo.xres - (cache_vinfo.xres * (input_x - ELO_MIN_X)) / width);
+ *dx = ((int)cache_vinfo.xres - ((int)cache_vinfo.xres * (input_x - ELO_MIN_X)) / width);
and also to provide quite failure to operations which have the screen currently locked...
The touch screen I'm using the original values were exactly opposite of any position I touched on the screen - evaluating the math the expr
ession SHOULD have handled reversing the min and max values - and after casting the unsigned .xres and .yres to a signed int - worked well.
..
Jim
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Jan 2006 06:36:43 +0000 |
| parents | d31afac94eff |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the headers with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #ifndef _SDL_main_h | |
| 29 #define _SDL_main_h | |
| 30 | |
| 31 /* Redefine main() on Win32 and MacOS so that it is called by winmain.c */ | |
| 32 | |
|
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Updated for embedded Visual C++ 4.0
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33 #if defined(WIN32) || defined(_WIN32) || \ |
|
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34 (defined(__MWERKS__) && !defined(__BEOS__)) || \ |
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35 defined(macintosh) || defined(__APPLE__) || \ |
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36 defined(__SYMBIAN32__) || defined(QWS) |
| 0 | 37 |
| 38 #ifdef __cplusplus | |
| 39 #define C_LINKAGE "C" | |
| 40 #else | |
| 41 #define C_LINKAGE | |
| 42 #endif /* __cplusplus */ | |
| 43 | |
| 44 /* The application's main() function must be called with C linkage, | |
| 45 and should be declared like this: | |
| 46 #ifdef __cplusplus | |
| 47 extern "C" | |
| 48 #endif | |
| 49 int main(int argc, char *argv[]) | |
| 50 { | |
| 51 } | |
| 52 */ | |
| 53 #define main SDL_main | |
| 54 | |
| 55 /* The prototype for the application's main() function */ | |
| 56 extern C_LINKAGE int SDL_main(int argc, char *argv[]); | |
| 57 | |
| 58 | |
| 59 /* From the SDL library code -- needed for registering the app on Win32 */ | |
| 60 #if defined(WIN32) | |
| 61 #include "SDL_types.h" | |
| 62 #include "begin_code.h" | |
| 63 | |
| 64 #ifdef __cplusplus | |
| 65 extern "C" { | |
| 66 #endif | |
| 67 | |
| 68 /* This should be called from your WinMain() function, if any */ | |
|
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69 extern DECLSPEC void SDLCALL SDL_SetModuleHandle(void *hInst); |
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Applied David MacCormack's patch to fix SDL_WINDOWID on Windows,
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70 /* This can also be called, but is no longer necessary */ |
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71 extern DECLSPEC int SDLCALL SDL_RegisterApp(char *name, Uint32 style, void *hInst); |
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Patch from Martin Lange (mala-sdl at hotmail.com) to unregister SDL's win32
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72 /* This can also be called, but is no longer necessary (SDL_Quit calls it) */ |
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Patch from Martin Lange (mala-sdl at hotmail.com) to unregister SDL's win32
Ryan C. Gordon <icculus@icculus.org>
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73 extern DECLSPEC void SDLCALL SDL_UnregisterApp(); |
| 0 | 74 #ifdef __cplusplus |
| 75 } | |
| 76 #endif | |
| 77 #include "close_code.h" | |
| 78 #endif | |
| 79 | |
| 80 /* From the SDL library code -- needed for registering QuickDraw on MacOS */ | |
| 81 #if defined(macintosh) | |
| 82 #include "begin_code.h" | |
| 83 | |
| 84 #ifdef __cplusplus | |
| 85 extern "C" { | |
| 86 #endif | |
| 87 | |
| 88 /* Forward declaration so we don't need to include QuickDraw.h */ | |
| 89 struct QDGlobals; | |
| 90 | |
| 91 /* This should be called from your main() function, if any */ | |
|
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Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
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297
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92 extern DECLSPEC void SDLCALL SDL_InitQuickDraw(struct QDGlobals *the_qd); |
| 0 | 93 |
| 94 #ifdef __cplusplus | |
| 95 } | |
| 96 #endif | |
| 97 #include "close_code.h" | |
| 98 #endif | |
| 99 | |
| 100 #endif /* Need to redefine main()? */ | |
| 101 | |
| 102 #endif /* _SDL_main_h */ |