annotate include/begin_code.h @ 4255:5a203e2b0162 SDL-1.2

Fixed bug #716 Armin Burgmeier 2009-03-15 04:35:45 PDT When I hold a mouse button down on another (non-SDL) window, then move the mouse over an SDL window and releasing the mouse button there, then the application does not receive an SDL_ACTIVEEVENT with state SDL_APPMOUSEFOCUS and gain 1. Furthermore, SDL_GetAppState() reports the application not having mouse focus until moving the mouse out of the window and back in again.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 27 Sep 2009 23:22:57 +0000
parents 4c4113c2162c
children 0d4756e57224
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 /**
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24 * @file begin_code.h
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25 * This file sets things up for C dynamic library function definitions,
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26 * static inlined functions, and structures aligned at 4-byte alignment.
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27 * If you don't like ugly C preprocessor code, don't look at this file. :)
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28 */
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29
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30 /**
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31 * @file begin_code.h
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32 * This shouldn't be nested -- included it around code only.
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33 */
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34 #ifdef _begin_code_h
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35 #error Nested inclusion of begin_code.h
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36 #endif
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37 #define _begin_code_h
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38
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39 /**
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40 * @def DECLSPEC
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41 * Some compilers use a special export keyword
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42 */
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43 #ifndef DECLSPEC
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44 # if defined(__BEOS__) || defined(__HAIKU__)
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45 # if defined(__GNUC__)
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46 # define DECLSPEC __declspec(dllexport)
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47 # else
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48 # define DECLSPEC __declspec(export)
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49 # endif
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50 # elif defined(__WIN32__)
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51 # ifdef __BORLANDC__
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52 # ifdef BUILD_SDL
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53 # define DECLSPEC
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54 # else
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55 # define DECLSPEC __declspec(dllimport)
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56 # endif
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57 # else
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58 # define DECLSPEC __declspec(dllexport)
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59 # endif
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60 # elif defined(__OS2__)
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61 # ifdef __WATCOMC__
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62 # ifdef BUILD_SDL
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63 # define DECLSPEC __declspec(dllexport)
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64 # else
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65 # define DECLSPEC
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66 # endif
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67 # elif defined (__GNUC__) && __GNUC__ < 4
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68 # /* Added support for GCC-EMX <v4.x */
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69 # /* this is needed for XFree86/OS2 developement */
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70 # /* F. Ambacher(anakor@snafu.de) 05.2008 */
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71 # ifdef BUILD_SDL
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72 # define DECLSPEC __declspec(dllexport)
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73 # else
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74 # define DECLSPEC
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75 # endif
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76 # else
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77 # define DECLSPEC
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78 # endif
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79 # else
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80 # if defined(__GNUC__) && __GNUC__ >= 4
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81 # define DECLSPEC __attribute__ ((visibility("default")))
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82 # else
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83 # define DECLSPEC
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84 # endif
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85 # endif
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86 #endif
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87
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88 /**
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89 * @def SDLCALL
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90 * By default SDL uses the C calling convention
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91 */
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92 #ifndef SDLCALL
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93 # if defined(__WIN32__) && !defined(__GNUC__)
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94 # define SDLCALL __cdecl
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95 # elif defined(__OS2__)
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96 # if defined (__GNUC__) && __GNUC__ < 4
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97 # /* Added support for GCC-EMX <v4.x */
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98 # /* this is needed for XFree86/OS2 developement */
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99 # /* F. Ambacher(anakor@snafu.de) 05.2008 */
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100 # define SDLCALL _cdecl
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101 # else
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102 # /* On other compilers on OS/2, we use the _System calling convention */
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103 # /* to be compatible with every compiler */
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104 # define SDLCALL _System
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105 # endif
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106 # else
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107 # define SDLCALL
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108 # endif
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109 #endif /* SDLCALL */
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110
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111 #ifdef __SYMBIAN32__
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112 #ifndef EKA2
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113 #undef DECLSPEC
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114 #define DECLSPEC
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115 #elif !defined(__WINS__)
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116 #undef DECLSPEC
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117 #define DECLSPEC __declspec(dllexport)
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118 #endif /* !EKA2 */
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119 #endif /* __SYMBIAN32__ */
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120
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121 /**
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122 * @file begin_code.h
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123 * Force structure packing at 4 byte alignment.
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124 * This is necessary if the header is included in code which has structure
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125 * packing set to an alternate value, say for loading structures from disk.
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126 * The packing is reset to the previous value in close_code.h
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127 */
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128 #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__)
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129 #ifdef _MSC_VER
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130 #pragma warning(disable: 4103)
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131 #endif
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132 #ifdef __BORLANDC__
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133 #pragma nopackwarning
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134 #endif
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135 #pragma pack(push,4)
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136 #elif (defined(__MWERKS__) && defined(__MACOS__))
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137 #pragma options align=mac68k4byte
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138 #pragma enumsalwaysint on
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139 #endif /* Compiler needs structure packing set */
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140
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141 /**
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142 * @def SDL_INLINE_OKAY
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143 * Set up compiler-specific options for inlining functions
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144 */
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145 #ifndef SDL_INLINE_OKAY
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146 #ifdef __GNUC__
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147 #define SDL_INLINE_OKAY
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148 #else
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149 /* Add any special compiler-specific cases here */
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150 #if defined(_MSC_VER) || defined(__BORLANDC__) || \
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151 defined(__DMC__) || defined(__SC__) || \
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152 defined(__WATCOMC__) || defined(__LCC__) || \
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153 defined(__DECC) || defined(__EABI__)
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154 #ifndef __inline__
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155 #define __inline__ __inline
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156 #endif
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157 #define SDL_INLINE_OKAY
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158 #else
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159 #if !defined(__MRC__) && !defined(_SGI_SOURCE)
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160 #ifndef __inline__
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161 #define __inline__ inline
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162 #endif
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163 #define SDL_INLINE_OKAY
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164 #endif /* Not a funky compiler */
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165 #endif /* Visual C++ */
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166 #endif /* GNU C */
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167 #endif /* SDL_INLINE_OKAY */
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168
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169 /**
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170 * @def __inline__
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171 * If inlining isn't supported, remove "__inline__", turning static
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172 * inlined functions into static functions (resulting in code bloat
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173 * in all files which include the offending header files)
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174 */
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175 #ifndef SDL_INLINE_OKAY
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176 #define __inline__
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177 #endif
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178
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179 /**
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180 * @def NULL
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181 * Apparently this is needed by several Windows compilers
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182 */
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183 #if !defined(__MACH__)
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184 #ifndef NULL
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185 #ifdef __cplusplus
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186 #define NULL 0
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187 #else
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188 #define NULL ((void *)0)
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189 #endif
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190 #endif /* NULL */
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191 #endif /* ! Mac OS X - breaks precompiled headers */