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annotate src/SDL.c @ 3650:91460fdfe83a

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Check for signal.h before using it, don't assume unix is available or required
author Sam Lantinga <slouken@libsdl.org>
date Wed, 13 Jan 2010 07:32:25 +0000
parents c5925cd41955
children bc50cd16bb07
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 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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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 #include "SDL_config.h"
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23
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24 /* Initialization code for SDL */
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25
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26 #include "SDL.h"
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27 #include "SDL_fatal.h"
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28 #include "SDL_assert.h"
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29
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30 #if !SDL_VIDEO_DISABLED
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31 #include "video/SDL_leaks.h"
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32 #endif
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33
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34 #if SDL_THREAD_PTH
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35 #include <pth.h>
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36 #endif
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37
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38 /* Initialization/Cleanup routines */
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39 #if !SDL_JOYSTICK_DISABLED
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40 extern int SDL_JoystickInit(void);
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41 extern void SDL_JoystickQuit(void);
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42 #endif
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43 #if !SDL_HAPTIC_DISABLED
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44 extern int SDL_HapticInit(void);
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45 extern int SDL_HapticQuit(void);
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46 #endif
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47 #if !SDL_TIMERS_DISABLED
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48 extern void SDL_StartTicks(void);
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49 extern int SDL_TimerInit(void);
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50 extern void SDL_TimerQuit(void);
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51 #endif
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52 #if defined(__WIN32__)
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53 extern int SDL_HelperWindowCreate(void);
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54 extern int SDL_HelperWindowDestroy(void);
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55 #endif
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56
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57 extern int SDL_AssertionsInit(void);
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58 extern void SDL_AssertionsQuit(void);
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59
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60 /* The initialized subsystems */
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61 static Uint32 SDL_initialized = 0;
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62 static Uint32 ticks_started = 0;
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63
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64 #ifdef CHECK_LEAKS
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65 int surfaces_allocated = 0;
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66 #endif
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67
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68 int
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69 SDL_InitSubSystem(Uint32 flags)
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70 {
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71 #if !SDL_VIDEO_DISABLED
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72 /* Initialize the video/event subsystem */
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73 if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
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74 if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {
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75 return (-1);
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76 }
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77 SDL_initialized |= SDL_INIT_VIDEO;
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78 }
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79 #else
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80 if (flags & SDL_INIT_VIDEO) {
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81 SDL_SetError("SDL not built with video support");
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82 return (-1);
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83 }
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84 #endif
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85
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86 #if !SDL_AUDIO_DISABLED
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87 /* Initialize the audio subsystem */
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88 if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
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89 if (SDL_AudioInit(NULL) < 0) {
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90 return (-1);
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91 }
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92 SDL_initialized |= SDL_INIT_AUDIO;
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93 }
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94 #else
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95 if (flags & SDL_INIT_AUDIO) {
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96 SDL_SetError("SDL not built with audio support");
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97 return (-1);
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98 }
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99 #endif
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100
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101 #if !SDL_TIMERS_DISABLED
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102 /* Initialize the timer subsystem */
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103 if (!ticks_started) {
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104 SDL_StartTicks();
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105 ticks_started = 1;
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106 }
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107 if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
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108 if (SDL_TimerInit() < 0) {
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109 return (-1);
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110 }
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111 SDL_initialized |= SDL_INIT_TIMER;
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112 }
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113 #else
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114 if (flags & SDL_INIT_TIMER) {
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115 SDL_SetError("SDL not built with timer support");
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116 return (-1);
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117 }
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118 #endif
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119
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120 #if !SDL_JOYSTICK_DISABLED
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121 /* Initialize the joystick subsystem */
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122 if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
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123 if (SDL_JoystickInit() < 0) {
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124 return (-1);
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125 }
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126 SDL_initialized |= SDL_INIT_JOYSTICK;
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127 }
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128 #else
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129 if (flags & SDL_INIT_JOYSTICK) {
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130 SDL_SetError("SDL not built with joystick support");
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131 return (-1);
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132 }
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133 #endif
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134
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135 #if !SDL_HAPTIC_DISABLED
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136 /* Initialize the haptic subsystem */
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137 if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
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138 if (SDL_HapticInit() < 0) {
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139 return (-1);
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140 }
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141 SDL_initialized |= SDL_INIT_HAPTIC;
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142 }
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143 #else
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144 if (flags & SDL_INIT_HAPTIC) {
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145 SDL_SetError("SDL not built with haptic (force feedback) support");
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146 return (-1);
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147 }
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148 #endif
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149 return (0);
0
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150 }
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151
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152 int
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153 SDL_Init(Uint32 flags)
0
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154 {
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155 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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156 if (!pth_init()) {
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157 return -1;
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158 }
397
283d348cb624 Pth threading bug fix
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diff changeset
159 #endif
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160
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161 if (SDL_AssertionsInit() < 0) {
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162 return -1;
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163 }
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164
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165 /* Clear the error message */
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166 SDL_ClearError();
0
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167
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168 #if defined(__WIN32__)
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169 if (SDL_HelperWindowCreate() < 0) {
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170 return -1;
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171 }
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172 #endif
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173
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174 /* Initialize the desired subsystems */
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175 if (SDL_InitSubSystem(flags) < 0) {
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176 return (-1);
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177 }
0
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178
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179 /* Everything is initialized */
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180 if (!(flags & SDL_INIT_NOPARACHUTE)) {
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181 SDL_InstallParachute();
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182 }
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183
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184 /* brief sanity checks for the sanity checks. :) */
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185 SDL_assert(1);
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186 SDL_assert_release(1);
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187 SDL_assert_paranoid(1);
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188 SDL_assert(0 || 1);
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189 SDL_assert_release(0 || 1);
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190 SDL_assert_paranoid(0 || 1);
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diff changeset
191
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192 #if 0 /* enable this to test assertion failures. */
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193 SDL_assert_release(1 == 2);
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194 SDL_assert_release(5 < 4);
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195 SDL_assert_release(0 && "This is a test");
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196 #endif
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197
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198 return (0);
0
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199 }
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200
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201 void
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202 SDL_QuitSubSystem(Uint32 flags)
0
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203 {
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204 /* Shut down requested initialized subsystems */
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205 #if !SDL_JOYSTICK_DISABLED
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206 if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {
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207 SDL_JoystickQuit();
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208 SDL_initialized &= ~SDL_INIT_JOYSTICK;
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209 }
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210 #endif
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211 #if !SDL_HAPTIC_DISABLED
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212 if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {
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213 SDL_HapticQuit();
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214 SDL_initialized &= ~SDL_INIT_HAPTIC;
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215 }
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diff changeset
216 #endif
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217 #if !SDL_TIMERS_DISABLED
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218 if ((flags & SDL_initialized & SDL_INIT_TIMER)) {
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219 SDL_TimerQuit();
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220 SDL_initialized &= ~SDL_INIT_TIMER;
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221 }
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222 #endif
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223 #if !SDL_AUDIO_DISABLED
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224 if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {
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225 SDL_AudioQuit();
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226 SDL_initialized &= ~SDL_INIT_AUDIO;
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227 }
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228 #endif
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229 #if !SDL_VIDEO_DISABLED
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230 if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {
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231 SDL_VideoQuit();
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232 SDL_initialized &= ~SDL_INIT_VIDEO;
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233 }
0
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234 #endif
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235 }
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236
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diff changeset
237 Uint32
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diff changeset
238 SDL_WasInit(Uint32 flags)
0
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diff changeset
239 {
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diff changeset
240 if (!flags) {
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diff changeset
241 flags = SDL_INIT_EVERYTHING;
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242 }
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243 return (SDL_initialized & flags);
0
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244 }
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245
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diff changeset
246 void
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diff changeset
247 SDL_Quit(void)
0
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248 {
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249 /* Quit all subsystems */
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250 #ifdef DEBUG_BUILD
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251 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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252 fflush(stdout);
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253 #endif
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254
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diff changeset
255 #if defined(__WIN32__)
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diff changeset
256 SDL_HelperWindowDestroy();
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diff changeset
257 #endif
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258 SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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diff changeset
259
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260 #ifdef CHECK_LEAKS
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diff changeset
261 #ifdef DEBUG_BUILD
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262 printf("[SDL_Quit] : CHECK_LEAKS\n");
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263 fflush(stdout);
1190
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diff changeset
264 #endif
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265
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266 /* !!! FIXME: make this an assertion. */
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267 /* Print the number of surfaces not freed */
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diff changeset
268 if (surfaces_allocated != 0) {
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269 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
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diff changeset
270 surfaces_allocated);
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diff changeset
271 }
0
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diff changeset
272 #endif
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273 #ifdef DEBUG_BUILD
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274 printf("[SDL_Quit] : SDL_UninstallParachute()\n");
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275 fflush(stdout);
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276 #endif
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277
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278 /* Uninstall any parachute signal handlers */
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279 SDL_UninstallParachute();
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280
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281 SDL_AssertionsQuit();
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282
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283 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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284 pth_kill();
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285 #endif
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286 #ifdef DEBUG_BUILD
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287 printf("[SDL_Quit] : Returning!\n");
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288 fflush(stdout);
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289 #endif
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290
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291 }
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292
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293 /* Get the library version number */
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294 void
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295 SDL_GetVersion(SDL_version * ver)
0
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296 {
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297 SDL_VERSION(ver);
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298 }
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299
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300 /* Get the library source revision */
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301 int
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302 SDL_GetRevision(void)
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303 {
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304 return SDL_REVISION;
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305 }
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306
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307 /* Get the name of the platform */
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308 const char *
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309 SDL_GetPlatform()
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310 {
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311 #if __AIX__
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312 return "AIX";
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313 #elif __HAIKU__
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314 /* Haiku must appear here before BeOS, since it also defines __BEOS__ */
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315 return "Haiku";
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316 #elif __BEOS__
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317 return "BeOS";
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318 #elif __BSDI__
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319 return "BSDI";
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320 #elif __DREAMCAST__
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321 return "Dreamcast";
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322 #elif __FREEBSD__
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323 return "FreeBSD";
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324 #elif __HPUX__
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325 return "HP-UX";
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326 #elif __IRIX__
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327 return "Irix";
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328 #elif __LINUX__
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329 return "Linux";
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330 #elif __MINT__
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331 return "Atari MiNT";
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332 #elif __MACOS__
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333 return "MacOS Classic";
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334 #elif __MACOSX__
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335 return "Mac OS X";
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336 #elif __NETBSD__
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337 return "NetBSD";
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338 #elif __OPENBSD__
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339 return "OpenBSD";
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340 #elif __OS2__
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341 return "OS/2";
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342 #elif __OSF__
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343 return "OSF/1";
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344 #elif __QNXNTO__
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345 return "QNX Neutrino";
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346 #elif __RISCOS__
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347 return "RISC OS";
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348 #elif __SOLARIS__
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349 return "Solaris";
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350 #elif __WIN32__
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351 #ifdef _WIN32_WCE
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352 return "Windows CE";
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353 #else
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354 return "Windows";
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355 #endif
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356 #elif __IPHONEOS__
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357 return "iPhone OS";
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358 #else
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359 return "Unknown (see SDL_platform.h)";
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360 #endif
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361 }
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362
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363 #if defined(__WIN32__)
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364
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365 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
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366 /* Need to include DllMain() on Watcom C for some reason.. */
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367 #define WIN32_LEAN_AND_MEAN
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368 #include <windows.h>
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369
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370 BOOL APIENTRY
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371 _DllMainCRTStartup(HANDLE hModule,
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372 DWORD ul_reason_for_call, LPVOID lpReserved)
1330
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373 {
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374 switch (ul_reason_for_call) {
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375 case DLL_PROCESS_ATTACH:
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376 case DLL_THREAD_ATTACH:
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377 case DLL_THREAD_DETACH:
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378 case DLL_PROCESS_DETACH:
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379 break;
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diff changeset
380 }
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381 return TRUE;
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diff changeset
382 }
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diff changeset
383 #endif /* building DLL with Watcom C */
1330
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diff changeset
384
3269
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diff changeset
385 #endif /* __WIN32__ */
1895
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diff changeset
386
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
387 /* vi: set ts=4 sw=4 expandtab: */