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annotate src/SDL.c @ 4590:1ad70fb49fcb

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Fix so many things that there is little place in this column to list them all but the result is that blending modes just work now for drawing primitives. Fixes involved: 1. Fix handling of alpha channel when SDL_BLENDMODE_NONE is set. 2. Make xrendercolor use floating-point values for color channels and then convert to 16 bit ints. 3. Fix handling of visuals in SDL_x11modes.c so that a 32 bit ARGB visual is used. 4. Fix the background pixel value in SDL_x11window.c so that the window background has an alpha value of 0xFF and not 0.
author Sunny Sachanandani <sunnysachanandani@gmail.com>
date Fri, 09 Jul 2010 21:36:41 +0530
parents 5e7e1f1a4056
children 791b3256fb22
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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 /* Initialization/Cleanup routines */
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35 #if !SDL_JOYSTICK_DISABLED
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36 extern int SDL_JoystickInit(void);
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37 extern void SDL_JoystickQuit(void);
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38 #endif
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39 #if !SDL_HAPTIC_DISABLED
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40 extern int SDL_HapticInit(void);
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41 extern int SDL_HapticQuit(void);
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42 #endif
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43 #if !SDL_TIMERS_DISABLED
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44 extern void SDL_StartTicks(void);
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45 extern int SDL_TimerInit(void);
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46 extern void SDL_TimerQuit(void);
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47 #endif
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48 #if defined(__WIN32__)
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49 extern int SDL_HelperWindowCreate(void);
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50 extern int SDL_HelperWindowDestroy(void);
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51 #endif
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52
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53 extern int SDL_AssertionsInit(void);
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54 extern void SDL_AssertionsQuit(void);
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55
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56 /* The initialized subsystems */
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57 static Uint32 SDL_initialized = 0;
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58 static Uint32 ticks_started = 0;
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59
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60 #ifdef CHECK_LEAKS
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61 int surfaces_allocated = 0;
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62 #endif
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63
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64 int
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65 SDL_InitSubSystem(Uint32 flags)
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66 {
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67 #if !SDL_VIDEO_DISABLED
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68 /* Initialize the video/event subsystem */
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69 if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
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70 if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {
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71 return (-1);
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72 }
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73 SDL_initialized |= SDL_INIT_VIDEO;
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74 }
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75 #else
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76 if (flags & SDL_INIT_VIDEO) {
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77 SDL_SetError("SDL not built with video support");
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78 return (-1);
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79 }
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80 #endif
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81
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82 #if !SDL_AUDIO_DISABLED
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83 /* Initialize the audio subsystem */
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84 if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
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85 if (SDL_AudioInit(NULL) < 0) {
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86 return (-1);
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87 }
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88 SDL_initialized |= SDL_INIT_AUDIO;
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89 }
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90 #else
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91 if (flags & SDL_INIT_AUDIO) {
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92 SDL_SetError("SDL not built with audio support");
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93 return (-1);
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94 }
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95 #endif
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96
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97 #if !SDL_TIMERS_DISABLED
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98 /* Initialize the timer subsystem */
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99 if (!ticks_started) {
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100 SDL_StartTicks();
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101 ticks_started = 1;
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102 }
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103 if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
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104 if (SDL_TimerInit() < 0) {
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105 return (-1);
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106 }
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107 SDL_initialized |= SDL_INIT_TIMER;
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108 }
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109 #else
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110 if (flags & SDL_INIT_TIMER) {
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111 SDL_SetError("SDL not built with timer support");
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112 return (-1);
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113 }
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114 #endif
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115
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116 #if !SDL_JOYSTICK_DISABLED
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117 /* Initialize the joystick subsystem */
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118 if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
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119 if (SDL_JoystickInit() < 0) {
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120 return (-1);
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121 }
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122 SDL_initialized |= SDL_INIT_JOYSTICK;
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123 }
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124 #else
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125 if (flags & SDL_INIT_JOYSTICK) {
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126 SDL_SetError("SDL not built with joystick support");
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127 return (-1);
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128 }
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129 #endif
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130
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131 #if !SDL_HAPTIC_DISABLED
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132 /* Initialize the haptic subsystem */
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133 if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
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134 if (SDL_HapticInit() < 0) {
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135 return (-1);
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136 }
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137 SDL_initialized |= SDL_INIT_HAPTIC;
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138 }
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139 #else
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140 if (flags & SDL_INIT_HAPTIC) {
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141 SDL_SetError("SDL not built with haptic (force feedback) support");
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142 return (-1);
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143 }
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144 #endif
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145 return (0);
0
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146 }
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147
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148 int
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149 SDL_Init(Uint32 flags)
0
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150 {
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151 if (SDL_AssertionsInit() < 0) {
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152 return -1;
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153 }
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154
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155 /* Clear the error message */
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156 SDL_ClearError();
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157
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158 #if defined(__WIN32__)
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159 if (SDL_HelperWindowCreate() < 0) {
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160 return -1;
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161 }
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162 #endif
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163
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164 /* Initialize the desired subsystems */
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165 if (SDL_InitSubSystem(flags) < 0) {
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166 return (-1);
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167 }
0
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168
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169 /* Everything is initialized */
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170 if (!(flags & SDL_INIT_NOPARACHUTE)) {
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171 SDL_InstallParachute();
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172 }
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173
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174 return (0);
0
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175 }
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176
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177 void
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178 SDL_QuitSubSystem(Uint32 flags)
0
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179 {
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180 /* Shut down requested initialized subsystems */
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181 #if !SDL_JOYSTICK_DISABLED
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182 if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {
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183 SDL_JoystickQuit();
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184 SDL_initialized &= ~SDL_INIT_JOYSTICK;
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185 }
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186 #endif
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187 #if !SDL_HAPTIC_DISABLED
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188 if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {
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189 SDL_HapticQuit();
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190 SDL_initialized &= ~SDL_INIT_HAPTIC;
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191 }
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192 #endif
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193 #if !SDL_TIMERS_DISABLED
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194 if ((flags & SDL_initialized & SDL_INIT_TIMER)) {
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195 SDL_TimerQuit();
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196 SDL_initialized &= ~SDL_INIT_TIMER;
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197 }
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198 #endif
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199 #if !SDL_AUDIO_DISABLED
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200 if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {
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201 SDL_AudioQuit();
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202 SDL_initialized &= ~SDL_INIT_AUDIO;
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203 }
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204 #endif
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205 #if !SDL_VIDEO_DISABLED
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206 if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {
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207 SDL_VideoQuit();
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208 SDL_initialized &= ~SDL_INIT_VIDEO;
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209 }
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210 #endif
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211 }
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212
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213 Uint32
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214 SDL_WasInit(Uint32 flags)
0
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215 {
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216 if (!flags) {
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217 flags = SDL_INIT_EVERYTHING;
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218 }
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219 return (SDL_initialized & flags);
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220 }
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221
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222 void
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223 SDL_Quit(void)
0
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224 {
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225 /* Quit all subsystems */
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226 #ifdef DEBUG_BUILD
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227 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n");
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228 fflush(stdout);
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229 #endif
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230
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231 #if defined(__WIN32__)
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232 SDL_HelperWindowDestroy();
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233 #endif
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234 SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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235
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236 #ifdef CHECK_LEAKS
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237 #ifdef DEBUG_BUILD
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238 printf("[SDL_Quit] : CHECK_LEAKS\n");
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239 fflush(stdout);
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240 #endif
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241
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242 /* !!! FIXME: make this an assertion. */
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243 /* Print the number of surfaces not freed */
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244 if (surfaces_allocated != 0) {
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245 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
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246 surfaces_allocated);
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247 }
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248 #endif
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249 #ifdef DEBUG_BUILD
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250 printf("[SDL_Quit] : SDL_UninstallParachute()\n");
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251 fflush(stdout);
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252 #endif
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253
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254 /* Uninstall any parachute signal handlers */
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255 SDL_UninstallParachute();
397
283d348cb624 Pth threading bug fix
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diff changeset
256
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257 SDL_AssertionsQuit();
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258
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259 #ifdef DEBUG_BUILD
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260 printf("[SDL_Quit] : Returning!\n");
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261 fflush(stdout);
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262 #endif
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263
0
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264 }
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265
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266 /* Get the library version number */
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diff changeset
267 void
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268 SDL_GetVersion(SDL_version * ver)
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269 {
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270 SDL_VERSION(ver);
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271 }
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272
2982
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273 /* Get the library source revision */
4419
5e7e1f1a4056 Changed revision details to be a string (an hg changeset) instead of an int.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
274 const char *
2996
972a69e47cd9 Added missing void
Sam Lantinga <slouken@libsdl.org>
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275 SDL_GetRevision(void)
2982
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276 {
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388c5a2daeac Fine tuned revision code, updated testver
Sam Lantinga <slouken@libsdl.org>
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277 return SDL_REVISION;
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278 }
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279
3319
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280 /* Get the name of the platform */
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281 const char *
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282 SDL_GetPlatform()
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283 {
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284 #if __AIX__
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285 return "AIX";
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286 #elif __HAIKU__
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287 /* Haiku must appear here before BeOS, since it also defines __BEOS__ */
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288 return "Haiku";
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289 #elif __BEOS__
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290 return "BeOS";
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291 #elif __BSDI__
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292 return "BSDI";
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293 #elif __DREAMCAST__
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294 return "Dreamcast";
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295 #elif __FREEBSD__
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296 return "FreeBSD";
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297 #elif __HPUX__
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298 return "HP-UX";
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299 #elif __IRIX__
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300 return "Irix";
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301 #elif __LINUX__
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302 return "Linux";
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303 #elif __MINT__
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304 return "Atari MiNT";
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305 #elif __MACOS__
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306 return "MacOS Classic";
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307 #elif __MACOSX__
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308 return "Mac OS X";
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309 #elif __NETBSD__
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310 return "NetBSD";
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311 #elif __OPENBSD__
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312 return "OpenBSD";
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313 #elif __OS2__
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Sam Lantinga <slouken@libsdl.org>
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314 return "OS/2";
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315 #elif __OSF__
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Sam Lantinga <slouken@libsdl.org>
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316 return "OSF/1";
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Sam Lantinga <slouken@libsdl.org>
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317 #elif __QNXNTO__
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318 return "QNX Neutrino";
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319 #elif __RISCOS__
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320 return "RISC OS";
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321 #elif __SOLARIS__
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322 return "Solaris";
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Sam Lantinga <slouken@libsdl.org>
parents: 3269
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323 #elif __WIN32__
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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324 #ifdef _WIN32_WCE
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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325 return "Windows CE";
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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326 #else
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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327 return "Windows";
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Sam Lantinga <slouken@libsdl.org>
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328 #endif
63d4517fc4ac Fixed bug #777
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329 #elif __IPHONEOS__
63d4517fc4ac Fixed bug #777
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330 return "iPhone OS";
63d4517fc4ac Fixed bug #777
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331 #else
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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332 return "Unknown (see SDL_platform.h)";
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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diff changeset
333 #endif
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
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334 }
63d4517fc4ac Fixed bug #777
Sam Lantinga <slouken@libsdl.org>
parents: 3269
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335
3269
a67a961e2171 Removed outdated OS/2 support
Sam Lantinga <slouken@libsdl.org>
parents: 3243
diff changeset
336 #if defined(__WIN32__)
1330
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Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
337
1465
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks)
Sam Lantinga <slouken@libsdl.org>
parents: 1433
diff changeset
338 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks)
Sam Lantinga <slouken@libsdl.org>
parents: 1433
diff changeset
339 /* Need to include DllMain() on Watcom C for some reason.. */
1433
bb6839704ed6 SDL_windows.h is no longer necessary
Sam Lantinga <slouken@libsdl.org>
parents: 1402
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340 #define WIN32_LEAN_AND_MEAN
bb6839704ed6 SDL_windows.h is no longer necessary
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
341 #include <windows.h>
1330
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parents: 1312
diff changeset
342
1895
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Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
343 BOOL APIENTRY
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
344 _DllMainCRTStartup(HANDLE hModule,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
345 DWORD ul_reason_for_call, LPVOID lpReserved)
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
346 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
347 switch (ul_reason_for_call) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
348 case DLL_PROCESS_ATTACH:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
349 case DLL_THREAD_ATTACH:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
350 case DLL_THREAD_DETACH:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
351 case DLL_PROCESS_DETACH:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
352 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
353 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
354 return TRUE;
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
355 }
1465
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks)
Sam Lantinga <slouken@libsdl.org>
parents: 1433
diff changeset
356 #endif /* building DLL with Watcom C */
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
357
3269
a67a961e2171 Removed outdated OS/2 support
Sam Lantinga <slouken@libsdl.org>
parents: 3243
diff changeset
358 #endif /* __WIN32__ */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
359
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
360 /* vi: set ts=4 sw=4 expandtab: */