Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 4446:8b03a20b320f
Much improved multi-display support for iPad.
Fixes most issues and limitations, I think.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 02 May 2010 05:08:12 -0400 |
| parents | e953700da4ca |
| children | 3e69e077cb95 49a97daea6ec |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3697 | 3 Copyright (C) 1997-2010 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 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 | |
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
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23 /** |
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24 * \file SDL_events.h |
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25 * |
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26 * Include file for SDL event handling. |
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27 */ |
| 0 | 28 |
| 29 #ifndef _SDL_events_h | |
| 30 #define _SDL_events_h | |
| 31 | |
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32 #include "SDL_stdinc.h" |
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33 #include "SDL_error.h" |
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34 #include "SDL_video.h" |
| 0 | 35 #include "SDL_keyboard.h" |
| 36 #include "SDL_mouse.h" | |
| 37 #include "SDL_joystick.h" | |
| 38 #include "SDL_quit.h" | |
| 39 | |
| 40 #include "begin_code.h" | |
| 41 /* Set up for C function definitions, even when using C++ */ | |
| 42 #ifdef __cplusplus | |
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43 /* *INDENT-OFF* */ |
| 0 | 44 extern "C" { |
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45 /* *INDENT-ON* */ |
| 0 | 46 #endif |
| 47 | |
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48 /* General keyboard/mouse state definitions */ |
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49 #define SDL_RELEASED 0 |
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50 #define SDL_PRESSED 1 |
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51 |
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52 /** |
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53 * \brief The types of events that can be delivered. |
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54 */ |
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55 typedef enum |
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56 { |
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57 SDL_FIRSTEVENT = 0, /**< Unused (do not remove) */ |
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58 |
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59 /* Application events */ |
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60 SDL_QUIT = 0x100, /**< User-requested quit */ |
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61 |
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62 /* Window events */ |
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63 SDL_WINDOWEVENT = 0x200, /**< Window state change */ |
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64 SDL_SYSWMEVENT, /**< System specific event */ |
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65 |
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66 /* Keyboard events */ |
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67 SDL_KEYDOWN = 0x300, /**< Keys pressed */ |
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68 SDL_KEYUP, /**< Keys released */ |
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69 SDL_TEXTEDITING, /**< Keyboard text editing (composition) */ |
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70 SDL_TEXTINPUT, /**< Keyboard text input */ |
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71 |
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72 /* Mouse events */ |
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73 SDL_MOUSEMOTION = 0x400, /**< Mouse moved */ |
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74 SDL_MOUSEBUTTONDOWN, /**< Mouse button pressed */ |
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75 SDL_MOUSEBUTTONUP, /**< Mouse button released */ |
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76 SDL_MOUSEWHEEL, /**< Mouse wheel motion */ |
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77 |
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78 /* Tablet events */ |
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79 SDL_PROXIMITYIN = 0x500, /**< Proximity In event */ |
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80 SDL_PROXIMITYOUT, /**< Proximity Out event */ |
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81 |
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82 /* Joystick events */ |
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83 SDL_JOYAXISMOTION = 0x600, /**< Joystick axis motion */ |
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84 SDL_JOYBALLMOTION, /**< Joystick trackball motion */ |
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85 SDL_JOYHATMOTION, /**< Joystick hat position change */ |
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86 SDL_JOYBUTTONDOWN, /**< Joystick button pressed */ |
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87 SDL_JOYBUTTONUP, /**< Joystick button released */ |
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88 |
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89 /* Obsolete events */ |
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90 SDL_EVENT_COMPAT1 = 0x7000, /**< SDL 1.2 events for compatibility */ |
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91 SDL_EVENT_COMPAT2, |
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92 SDL_EVENT_COMPAT3, |
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93 |
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94 /** Events ::SDL_USEREVENT through ::SDL_LASTEVENT are for your use, |
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95 * and should be allocated with SDL_RegisterEvents() |
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96 */ |
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97 SDL_USEREVENT = 0x8000, |
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98 |
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99 /** |
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100 * This last event is only for bounding internal arrays |
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101 */ |
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102 SDL_LASTEVENT = 0xFFFF |
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103 } SDL_EventType; |
| 0 | 104 |
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105 /** |
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106 * \brief Window state change event data (event.window.*) |
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107 */ |
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108 typedef struct SDL_WindowEvent |
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109 { |
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110 Uint32 type; /**< ::SDL_WINDOWEVENT */ |
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111 Uint32 windowID; /**< The associated window */ |
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112 Uint8 event; /**< ::SDL_WindowEventID */ |
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113 Uint8 padding1; |
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114 Uint8 padding2; |
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115 Uint8 padding3; |
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116 int data1; /**< event dependent data */ |
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117 int data2; /**< event dependent data */ |
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118 } SDL_WindowEvent; |
| 0 | 119 |
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120 /** |
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121 * \brief Keyboard button event structure (event.key.*) |
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122 */ |
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123 typedef struct SDL_KeyboardEvent |
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124 { |
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125 Uint32 type; /**< ::SDL_KEYDOWN or ::SDL_KEYUP */ |
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126 Uint32 windowID; /**< The window with keyboard focus, if any */ |
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127 Uint8 which; /**< The keyboard device index */ |
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128 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */ |
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129 Uint8 padding1; |
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130 Uint8 padding2; |
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131 SDL_keysym keysym; /**< The key that was pressed or released */ |
| 0 | 132 } SDL_KeyboardEvent; |
| 133 | |
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134 #define SDL_TEXTEDITINGEVENT_TEXT_SIZE (32) |
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135 /** |
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136 * \brief Keyboard text editing event structure (event.edit.*) |
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137 */ |
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138 typedef struct SDL_TextEditingEvent |
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139 { |
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140 Uint32 type; /**< ::SDL_TEXTEDITING */ |
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141 Uint32 windowID; /**< The window with keyboard focus, if any */ |
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142 Uint8 which; /**< The keyboard device index */ |
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143 char text[SDL_TEXTEDITINGEVENT_TEXT_SIZE]; /**< The editing text */ |
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144 int start; /**< The start cursor of selected editing text */ |
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145 int length; /**< The length of selected editing text */ |
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146 } SDL_TextEditingEvent; |
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147 |
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148 |
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149 #define SDL_TEXTINPUTEVENT_TEXT_SIZE (32) |
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150 /** |
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151 * \brief Keyboard text input event structure (event.text.*) |
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152 */ |
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153 typedef struct SDL_TextInputEvent |
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154 { |
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155 Uint32 type; /**< ::SDL_TEXTINPUT */ |
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156 Uint32 windowID; /**< The window with keyboard focus, if any */ |
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157 Uint8 which; /**< The keyboard device index */ |
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158 Uint8 padding1; |
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159 Uint8 padding2; |
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160 Uint8 padding3; |
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161 char text[SDL_TEXTINPUTEVENT_TEXT_SIZE]; /**< The input text */ |
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162 } SDL_TextInputEvent; |
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163 |
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164 /** |
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165 * \brief Mouse motion event structure (event.motion.*) |
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166 */ |
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167 typedef struct SDL_MouseMotionEvent |
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168 { |
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169 Uint32 type; /**< ::SDL_MOUSEMOTION */ |
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170 Uint32 windowID; /**< The window with mouse focus, if any */ |
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171 Uint8 which; /**< The mouse device index */ |
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172 Uint8 state; /**< The current button state */ |
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173 Uint8 padding1; |
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174 Uint8 padding2; |
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175 int x; /**< X coordinate, relative to window */ |
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176 int y; /**< Y coordinate, relative to window */ |
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177 int z; /**< Z coordinate, for future use */ |
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178 int pressure; /**< Pressure reported by tablets */ |
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179 int pressure_max; /**< Maximum value of the pressure reported by the device */ |
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180 int pressure_min; /**< Minimum value of the pressure reported by the device */ |
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181 int rotation; /**< For future use */ |
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182 int tilt_x; /**< For future use */ |
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183 int tilt_y; /**< For future use */ |
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184 int cursor; /**< The cursor being used in the event */ |
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185 int xrel; /**< The relative motion in the X direction */ |
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186 int yrel; /**< The relative motion in the Y direction */ |
| 0 | 187 } SDL_MouseMotionEvent; |
| 188 | |
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189 /** |
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190 * \brief Mouse button event structure (event.button.*) |
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191 */ |
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192 typedef struct SDL_MouseButtonEvent |
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193 { |
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194 Uint32 type; /**< ::SDL_MOUSEBUTTONDOWN or ::SDL_MOUSEBUTTONUP */ |
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195 Uint32 windowID; /**< The window with mouse focus, if any */ |
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196 Uint8 which; /**< The mouse device index */ |
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197 Uint8 button; /**< The mouse button index */ |
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198 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */ |
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199 Uint8 padding1; |
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200 int x; /**< X coordinate, relative to window */ |
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201 int y; /**< Y coordinate, relative to window */ |
| 0 | 202 } SDL_MouseButtonEvent; |
| 203 | |
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204 /** |
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205 * \brief Mouse wheel event structure (event.wheel.*) |
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206 */ |
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207 typedef struct SDL_MouseWheelEvent |
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208 { |
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209 Uint32 type; /**< ::SDL_MOUSEWHEEL */ |
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210 Uint32 windowID; /**< The window with mouse focus, if any */ |
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211 Uint8 which; /**< The mouse device index */ |
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212 Uint8 padding1; |
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213 Uint8 padding2; |
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214 Uint8 padding3; |
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215 int x; /**< The amount scrolled horizontally */ |
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216 int y; /**< The amount scrolled vertically */ |
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217 } SDL_MouseWheelEvent; |
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218 |
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219 /** |
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220 * \brief Tablet pen proximity event |
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221 */ |
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222 typedef struct SDL_ProximityEvent |
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223 { |
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224 Uint32 type; /**< ::SDL_PROXIMITYIN or ::SDL_PROXIMITYOUT */ |
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225 Uint32 windowID; /**< The associated window */ |
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226 Uint8 which; |
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227 Uint8 padding1; |
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228 Uint8 padding2; |
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229 Uint8 padding3; |
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230 int cursor; |
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231 int x; |
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232 int y; |
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233 } SDL_ProximityEvent; |
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234 |
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235 /** |
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236 * \brief Joystick axis motion event structure (event.jaxis.*) |
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237 */ |
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238 typedef struct SDL_JoyAxisEvent |
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239 { |
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240 Uint32 type; /**< ::SDL_JOYAXISMOTION */ |
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241 Uint8 which; /**< The joystick device index */ |
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242 Uint8 axis; /**< The joystick axis index */ |
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243 Uint8 padding1; |
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244 Uint8 padding2; |
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245 int value; /**< The axis value (range: -32768 to 32767) */ |
| 0 | 246 } SDL_JoyAxisEvent; |
| 247 | |
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248 /** |
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249 * \brief Joystick trackball motion event structure (event.jball.*) |
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250 */ |
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251 typedef struct SDL_JoyBallEvent |
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252 { |
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253 Uint32 type; /**< ::SDL_JOYBALLMOTION */ |
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254 Uint8 which; /**< The joystick device index */ |
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255 Uint8 ball; /**< The joystick trackball index */ |
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256 Uint8 padding1; |
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257 Uint8 padding2; |
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258 int xrel; /**< The relative motion in the X direction */ |
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259 int yrel; /**< The relative motion in the Y direction */ |
| 0 | 260 } SDL_JoyBallEvent; |
| 261 | |
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262 /** |
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263 * \brief Joystick hat position change event structure (event.jhat.*) |
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264 */ |
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265 typedef struct SDL_JoyHatEvent |
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266 { |
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267 Uint32 type; /**< ::SDL_JOYHATMOTION */ |
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268 Uint8 which; /**< The joystick device index */ |
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269 Uint8 hat; /**< The joystick hat index */ |
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270 Uint8 value; /**< The hat position value. |
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271 * \sa ::SDL_HAT_LEFTUP ::SDL_HAT_UP ::SDL_HAT_RIGHTUP |
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272 * \sa ::SDL_HAT_LEFT ::SDL_HAT_CENTERED ::SDL_HAT_RIGHT |
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273 * \sa ::SDL_HAT_LEFTDOWN ::SDL_HAT_DOWN ::SDL_HAT_RIGHTDOWN |
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274 * |
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275 * Note that zero means the POV is centered. |
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276 */ |
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277 Uint8 padding1; |
| 0 | 278 } SDL_JoyHatEvent; |
| 279 | |
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280 /** |
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281 * \brief Joystick button event structure (event.jbutton.*) |
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282 */ |
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283 typedef struct SDL_JoyButtonEvent |
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284 { |
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285 Uint32 type; /**< ::SDL_JOYBUTTONDOWN or ::SDL_JOYBUTTONUP */ |
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286 Uint8 which; /**< The joystick device index */ |
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287 Uint8 button; /**< The joystick button index */ |
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288 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */ |
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289 Uint8 padding1; |
| 0 | 290 } SDL_JoyButtonEvent; |
| 291 | |
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292 /** |
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293 * \brief The "quit requested" event |
| 0 | 294 */ |
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295 typedef struct SDL_QuitEvent |
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296 { |
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297 Uint32 type; /**< ::SDL_QUIT */ |
| 0 | 298 } SDL_QuitEvent; |
| 299 | |
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300 /** |
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301 * \brief A user-defined event type (event.user.*) |
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302 */ |
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303 typedef struct SDL_UserEvent |
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304 { |
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305 Uint32 type; /**< ::SDL_USEREVENT through ::SDL_NUMEVENTS-1 */ |
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306 Uint32 windowID; /**< The associated window if any */ |
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307 int code; /**< User defined event code */ |
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308 void *data1; /**< User defined data pointer */ |
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309 void *data2; /**< User defined data pointer */ |
| 0 | 310 } SDL_UserEvent; |
| 311 | |
| 312 struct SDL_SysWMmsg; | |
| 313 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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314 |
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315 /** |
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316 * \brief A video driver dependent system event (event.syswm.*) |
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317 * |
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318 * \note If you want to use this event, you should include SDL_syswm.h. |
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319 */ |
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320 typedef struct SDL_SysWMEvent |
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321 { |
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322 Uint32 type; /**< ::SDL_SYSWMEVENT */ |
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323 SDL_SysWMmsg *msg; /**< driver dependent data, defined in SDL_syswm.h */ |
| 0 | 324 } SDL_SysWMEvent; |
| 325 | |
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326 #ifndef SDL_NO_COMPAT |
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327 /** |
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328 * \addtogroup Compatibility |
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329 */ |
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330 /*@{*/ |
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331 |
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332 /** |
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333 * \name Typedefs for backwards compatibility |
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334 */ |
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335 /*@{*/ |
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336 typedef struct SDL_ActiveEvent |
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337 { |
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338 Uint32 type; |
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339 Uint8 gain; |
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340 Uint8 state; |
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341 } SDL_ActiveEvent; |
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342 |
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343 typedef struct SDL_ResizeEvent |
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344 { |
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345 Uint32 type; |
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346 int w; |
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347 int h; |
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348 } SDL_ResizeEvent; |
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349 /*@}*/ |
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350 |
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351 /*@}*//*Compatibility*/ |
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352 #endif |
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353 |
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354 /** |
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355 * \brief General event structure |
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356 */ |
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357 typedef union SDL_Event |
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358 { |
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359 Uint32 type; /**< Event type, shared with all events */ |
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360 SDL_WindowEvent window; /**< Window event data */ |
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361 SDL_KeyboardEvent key; /**< Keyboard event data */ |
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362 SDL_TextEditingEvent edit; /**< Text editing event data */ |
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363 SDL_TextInputEvent text; /**< Text input event data */ |
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364 SDL_MouseMotionEvent motion; /**< Mouse motion event data */ |
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365 SDL_MouseButtonEvent button; /**< Mouse button event data */ |
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366 SDL_MouseWheelEvent wheel; /**< Mouse wheel event data */ |
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367 SDL_JoyAxisEvent jaxis; /**< Joystick axis event data */ |
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368 SDL_JoyBallEvent jball; /**< Joystick ball event data */ |
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369 SDL_JoyHatEvent jhat; /**< Joystick hat event data */ |
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370 SDL_JoyButtonEvent jbutton; /**< Joystick button event data */ |
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371 SDL_QuitEvent quit; /**< Quit request event data */ |
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372 SDL_UserEvent user; /**< Custom event data */ |
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373 SDL_SysWMEvent syswm; /**< System dependent window event data */ |
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374 SDL_ProximityEvent proximity; /**< Proximity In or Out event */ |
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375 |
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376 /** Temporarily here for backwards compatibility */ |
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377 /*@{*/ |
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378 #ifndef SDL_NO_COMPAT |
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379 SDL_ActiveEvent active; |
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380 SDL_ResizeEvent resize; |
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381 #endif |
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382 /*@}*/ |
| 0 | 383 } SDL_Event; |
| 384 | |
| 385 | |
| 386 /* Function prototypes */ | |
| 387 | |
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388 /** |
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389 * Pumps the event loop, gathering events from the input devices. |
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390 * |
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391 * This function updates the event queue and internal input device state. |
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392 * |
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393 * This should only be run in the thread that sets the video mode. |
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394 */ |
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395 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
| 0 | 396 |
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397 /*@{*/ |
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398 typedef enum |
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399 { |
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400 SDL_ADDEVENT, |
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401 SDL_PEEKEVENT, |
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402 SDL_GETEVENT |
| 0 | 403 } SDL_eventaction; |
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404 |
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405 /** |
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406 * Checks the event queue for messages and optionally returns them. |
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407 * |
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408 * If \c action is ::SDL_ADDEVENT, up to \c numevents events will be added to |
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409 * the back of the event queue. |
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410 * |
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411 * If \c action is ::SDL_PEEKEVENT, up to \c numevents events at the front |
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412 * of the event queue, matching \c mask, will be returned and will not |
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413 * be removed from the queue. |
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414 * |
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415 * If \c action is ::SDL_GETEVENT, up to \c numevents events at the front |
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416 * of the event queue, matching \c mask, will be returned and will be |
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417 * removed from the queue. |
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418 * |
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419 * \return The number of events actually stored, or -1 if there was an error. |
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420 * |
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421 * This function is thread-safe. |
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422 */ |
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423 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event * events, int numevents, |
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424 SDL_eventaction action, |
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425 Uint32 minType, Uint32 maxType); |
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426 /*@}*/ |
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427 |
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428 /** |
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429 * Checks to see if certain event types are in the event queue. |
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430 */ |
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431 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvent(Uint32 type); |
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432 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvents(Uint32 minType, Uint32 maxType); |
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433 |
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434 /** |
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435 * This function clears events from the event queue |
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436 */ |
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437 extern DECLSPEC void SDLCALL SDL_FlushEvent(Uint32 type); |
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438 extern DECLSPEC void SDLCALL SDL_FlushEvents(Uint32 minType, Uint32 maxType); |
| 0 | 439 |
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440 /** |
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441 * \brief Polls for currently pending events. |
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442 * |
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443 * \return 1 if there are any pending events, or 0 if there are none available. |
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444 * |
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445 * \param event If not NULL, the next event is removed from the queue and |
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446 * stored in that area. |
| 0 | 447 */ |
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448 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event * event); |
| 0 | 449 |
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450 /** |
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451 * \brief Waits indefinitely for the next available event. |
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452 * |
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453 * \return 1, or 0 if there was an error while waiting for events. |
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454 * |
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455 * \param event If not NULL, the next event is removed from the queue and |
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456 * stored in that area. |
| 0 | 457 */ |
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458 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event * event); |
| 0 | 459 |
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460 /** |
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461 * \brief Waits until the specified timeout (in milliseconds) for the next |
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462 * available event. |
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463 * |
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464 * \return 1, or 0 if there was an error while waiting for events. |
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465 * |
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466 * \param event If not NULL, the next event is removed from the queue and |
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467 * stored in that area. |
| 3072 | 468 */ |
| 469 extern DECLSPEC int SDLCALL SDL_WaitEventTimeout(SDL_Event * event, | |
| 470 int timeout); | |
| 471 | |
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472 /** |
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473 * \brief Add an event to the event queue. |
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474 * |
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475 * \return 1 on success, 0 if the event was filtered, or -1 if the event queue |
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476 * was full or there was some other error. |
| 0 | 477 */ |
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478 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event * event); |
| 0 | 479 |
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480 typedef int (SDLCALL * SDL_EventFilter) (void *userdata, SDL_Event * event); |
| 0 | 481 |
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482 /** |
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483 * Sets up a filter to process all events before they change internal state and |
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484 * are posted to the internal event queue. |
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485 * |
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486 * The filter is protypted as: |
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487 * \code |
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488 * int SDL_EventFilter(void *userdata, SDL_Event * event); |
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489 * \endcode |
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490 * |
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491 * If the filter returns 1, then the event will be added to the internal queue. |
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492 * If it returns 0, then the event will be dropped from the queue, but the |
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493 * internal state will still be updated. This allows selective filtering of |
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494 * dynamically arriving events. |
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495 * |
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496 * \warning Be very careful of what you do in the event filter function, as |
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497 * it may run in a different thread! |
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498 * |
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499 * There is one caveat when dealing with the ::SDL_QUITEVENT event type. The |
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500 * event filter is only called when the window manager desires to close the |
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501 * application window. If the event filter returns 1, then the window will |
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502 * be closed, otherwise the window will remain open if possible. |
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503 * |
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504 * If the quit event is generated by an interrupt signal, it will bypass the |
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505 * internal queue and be delivered to the application at the next event poll. |
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506 */ |
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507 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter, |
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508 void *userdata); |
| 0 | 509 |
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510 /** |
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511 * Return the current event filter - can be used to "chain" filters. |
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512 * If there is no event filter set, this function returns SDL_FALSE. |
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513 */ |
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514 extern DECLSPEC SDL_bool SDLCALL SDL_GetEventFilter(SDL_EventFilter * filter, |
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515 void **userdata); |
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516 |
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517 /** |
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518 * Run the filter function on the current event queue, removing any |
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519 * events for which the filter returns 0. |
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520 */ |
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521 extern DECLSPEC void SDLCALL SDL_FilterEvents(SDL_EventFilter filter, |
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522 void *userdata); |
| 0 | 523 |
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524 /*@{*/ |
| 0 | 525 #define SDL_QUERY -1 |
| 526 #define SDL_IGNORE 0 | |
| 527 #define SDL_DISABLE 0 | |
| 528 #define SDL_ENABLE 1 | |
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529 |
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530 /** |
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531 * This function allows you to set the state of processing certain events. |
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532 * - If \c state is set to ::SDL_IGNORE, that event will be automatically |
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533 * dropped from the event queue and will not event be filtered. |
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534 * - If \c state is set to ::SDL_ENABLE, that event will be processed |
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535 * normally. |
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536 * - If \c state is set to ::SDL_QUERY, SDL_EventState() will return the |
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537 * current processing state of the specified event. |
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538 */ |
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539 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint32 type, int state); |
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540 /*@}*/ |
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541 #define SDL_GetEventState(type) SDL_EventState(type, SDL_QUERY) |
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542 |
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543 /** |
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544 * This function allocates a set of user-defined events, and returns |
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545 * the beginning event number for that set of events. |
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546 * |
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547 * If there aren't enough user-defined events left, this function |
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548 * returns (Uint32)-1 |
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549 */ |
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550 extern DECLSPEC Uint32 SDLCALL SDL_RegisterEvents(int numevents); |
| 0 | 551 |
| 552 /* Ends C function definitions when using C++ */ | |
| 553 #ifdef __cplusplus | |
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554 /* *INDENT-OFF* */ |
| 0 | 555 } |
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556 /* *INDENT-ON* */ |
| 0 | 557 #endif |
| 558 #include "close_code.h" | |
| 559 | |
| 560 #endif /* _SDL_events_h */ | |
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561 |
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562 /* vi: set ts=4 sw=4 expandtab: */ |