Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 1724:6c63fc2bd986 SDL-1.3
Proof of concept done - Win32 GDI implementation mostly complete.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 06 Jul 2006 07:17:11 +0000 |
| parents | 5daa04d862f1 |
| children | 875c3cf1a12c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 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 * \enum SDL_EventType |
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54 * |
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55 * \brief The types of events that can be delivered |
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56 */ |
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57 typedef enum |
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58 { |
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59 SDL_NOEVENT = 0, /**< Unused (do not remove) */ |
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60 SDL_WINDOWEVENT, /**< Window state change */ |
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61 SDL_KEYDOWN, /**< Keys pressed */ |
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62 SDL_KEYUP, /**< Keys released */ |
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63 SDL_TEXTINPUT, /**< Keyboard text input */ |
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64 SDL_MOUSEMOTION, /**< Mouse moved */ |
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65 SDL_MOUSEBUTTONDOWN, /**< Mouse button pressed */ |
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66 SDL_MOUSEBUTTONUP, /**< Mouse button released */ |
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67 SDL_MOUSEWHEEL, /**< Mouse wheel motion */ |
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68 SDL_JOYAXISMOTION, /**< Joystick axis motion */ |
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69 SDL_JOYBALLMOTION, /**< Joystick trackball motion */ |
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70 SDL_JOYHATMOTION, /**< Joystick hat position change */ |
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71 SDL_JOYBUTTONDOWN, /**< Joystick button pressed */ |
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72 SDL_JOYBUTTONUP, /**< Joystick button released */ |
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73 SDL_QUIT, /**< User-requested quit */ |
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74 SDL_SYSWMEVENT, /**< System specific event */ |
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75 SDL_EVENT_RESERVED1, /**< Reserved for future use... */ |
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76 SDL_EVENT_RESERVED2, /**< Reserved for future use... */ |
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77 SDL_EVENT_RESERVED3, /**< Reserved for future use... */ |
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78 /* Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use */ |
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79 SDL_USEREVENT = 24, |
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80 /* This last event is only for bounding internal arrays |
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81 It is the number of bits in the event mask datatype -- Uint32 |
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82 */ |
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83 SDL_NUMEVENTS = 32 |
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84 } SDL_EventType; |
| 0 | 85 |
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86 /** |
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87 * \enum SDL_EventMask |
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88 * |
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89 * \brief Predefined event masks |
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90 */ |
| 0 | 91 #define SDL_EVENTMASK(X) (1<<(X)) |
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92 typedef enum |
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93 { |
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94 SDL_WINDOWEVENTMASK = SDL_EVENTMASK(SDL_WINDOWEVENT), |
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95 SDL_KEYDOWNMASK = SDL_EVENTMASK(SDL_KEYDOWN), |
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96 SDL_KEYUPMASK = SDL_EVENTMASK(SDL_KEYUP), |
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97 SDL_KEYEVENTMASK = SDL_EVENTMASK(SDL_KEYDOWN) | SDL_EVENTMASK(SDL_KEYUP), |
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98 SDL_TEXTINPUTMASK = SDL_EVENTMASK(SDL_TEXTINPUT), |
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99 SDL_MOUSEMOTIONMASK = SDL_EVENTMASK(SDL_MOUSEMOTION), |
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100 SDL_MOUSEBUTTONDOWNMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN), |
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101 SDL_MOUSEBUTTONUPMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONUP), |
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102 SDL_MOUSEWHEELMASK = SDL_EVENTMASK(SDL_MOUSEWHEEL), |
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103 SDL_MOUSEEVENTMASK = SDL_EVENTMASK(SDL_MOUSEMOTION) | |
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104 SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN) | SDL_EVENTMASK(SDL_MOUSEBUTTONUP), |
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105 SDL_JOYAXISMOTIONMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION), |
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106 SDL_JOYBALLMOTIONMASK = SDL_EVENTMASK(SDL_JOYBALLMOTION), |
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107 SDL_JOYHATMOTIONMASK = SDL_EVENTMASK(SDL_JOYHATMOTION), |
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108 SDL_JOYBUTTONDOWNMASK = SDL_EVENTMASK(SDL_JOYBUTTONDOWN), |
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109 SDL_JOYBUTTONUPMASK = SDL_EVENTMASK(SDL_JOYBUTTONUP), |
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110 SDL_JOYEVENTMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION) | |
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111 SDL_EVENTMASK(SDL_JOYBALLMOTION) | |
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112 SDL_EVENTMASK(SDL_JOYHATMOTION) | |
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113 SDL_EVENTMASK(SDL_JOYBUTTONDOWN) | SDL_EVENTMASK(SDL_JOYBUTTONUP), |
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114 SDL_QUITMASK = SDL_EVENTMASK(SDL_QUIT), |
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115 SDL_SYSWMEVENTMASK = SDL_EVENTMASK(SDL_SYSWMEVENT) |
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116 } SDL_EventMask; |
| 0 | 117 #define SDL_ALLEVENTS 0xFFFFFFFF |
| 118 | |
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119 /** |
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120 * \struct SDL_WindowEvent |
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121 * |
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122 * \brief Window state change event data |
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123 */ |
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124 typedef struct SDL_WindowEvent |
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125 { |
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126 Uint8 type; /**< SDL_WINDOWEVENT */ |
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127 Uint8 event; /**< SDL_WindowEventID */ |
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128 int data1; /**< event dependent data */ |
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129 int data2; /**< event dependent data */ |
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130 SDL_WindowID windowID; /**< The associated window */ |
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131 } SDL_WindowEvent; |
| 0 | 132 |
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133 /** |
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134 * \struct SDL_KeyboardEvent |
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135 * |
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136 * \brief Keyboard button event structure |
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137 */ |
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138 typedef struct SDL_KeyboardEvent |
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139 { |
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140 Uint8 type; /**< SDL_KEYDOWN or SDL_KEYUP */ |
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141 Uint8 which; /**< The keyboard device index */ |
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142 Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ |
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143 SDL_keysym keysym; /**< The key that was pressed or released */ |
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144 SDL_WindowID windowID; /**< The window with keyboard focus, if any */ |
| 0 | 145 } SDL_KeyboardEvent; |
| 146 | |
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147 /** |
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148 * \struct SDL_TextInputEvent |
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149 * |
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150 * \brief Keyboard text input event structure |
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151 */ |
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152 typedef struct SDL_TextInputEvent |
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153 { |
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154 Uint8 type; /**< SDL_TEXTINPUT */ |
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155 Uint8 which; /**< The keyboard device index */ |
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156 char text[32]; /**< The input text */ |
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157 SDL_WindowID windowID; /**< The window with keyboard focus, if any */ |
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158 } SDL_TextInputEvent; |
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159 |
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160 /** |
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161 * \struct SDL_MouseMotionEvent |
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162 * |
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163 * \brief Mouse motion event structure |
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164 */ |
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165 typedef struct SDL_MouseMotionEvent |
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166 { |
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167 Uint8 type; /**< SDL_MOUSEMOTION */ |
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168 Uint8 which; /**< The mouse device index */ |
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169 Uint8 state; /**< The current button state */ |
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170 int x; /**< X coordinate, relative to window */ |
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171 int y; /**< Y coordinate, relative to window */ |
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172 int xrel; /**< The relative motion in the X direction */ |
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173 int yrel; /**< The relative motion in the Y direction */ |
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174 SDL_WindowID windowID; /**< The window with mouse focus, if any */ |
| 0 | 175 } SDL_MouseMotionEvent; |
| 176 | |
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177 /** |
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178 * \struct SDL_MouseButtonEvent |
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179 * |
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180 * \brief Mouse button event structure |
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181 */ |
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182 typedef struct SDL_MouseButtonEvent |
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183 { |
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184 Uint8 type; /**< SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP */ |
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185 Uint8 which; /**< The mouse device index */ |
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186 Uint8 button; /**< The mouse button index */ |
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187 Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ |
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188 int x; /**< X coordinate, relative to window */ |
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189 int y; /**< Y coordinate, relative to window */ |
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190 SDL_WindowID windowID; /**< The window with mouse focus, if any */ |
| 0 | 191 } SDL_MouseButtonEvent; |
| 192 | |
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193 /** |
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194 * \struct SDL_MouseWheelEvent |
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195 * |
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196 * \brief Mouse wheel event structure |
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197 */ |
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198 typedef struct SDL_MouseWheelEvent |
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199 { |
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200 Uint8 type; /**< SDL_MOUSEWHEEL */ |
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201 Uint8 which; /**< The mouse device index */ |
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202 int motion; /**< The direction and distance scrolled */ |
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203 SDL_WindowID windowID; /**< The window with mouse focus, if any */ |
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204 } SDL_MouseWheelEvent; |
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205 |
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206 /** |
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207 * \struct SDL_JoyAxisEvent |
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208 * |
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209 * \brief Joystick axis motion event structure |
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210 */ |
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211 typedef struct SDL_JoyAxisEvent |
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212 { |
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213 Uint8 type; /**< SDL_JOYAXISMOTION */ |
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214 Uint8 which; /**< The joystick device index */ |
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215 Uint8 axis; /**< The joystick axis index */ |
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216 int value; /**< The axis value (range: -32768 to 32767) */ |
| 0 | 217 } SDL_JoyAxisEvent; |
| 218 | |
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219 /** |
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220 * \struct SDL_JoyBallEvent |
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221 * |
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222 * \brief Joystick trackball motion event structure |
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223 */ |
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224 typedef struct SDL_JoyBallEvent |
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225 { |
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226 Uint8 type; /**< SDL_JOYBALLMOTION */ |
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227 Uint8 which; /**< The joystick device index */ |
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228 Uint8 ball; /**< The joystick trackball index */ |
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229 int xrel; /**< The relative motion in the X direction */ |
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230 int yrel; /**< The relative motion in the Y direction */ |
| 0 | 231 } SDL_JoyBallEvent; |
| 232 | |
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233 /** |
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234 * \struct SDL_JoyHatEvent |
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235 * |
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236 * \brief Joystick hat position change event structure |
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237 */ |
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238 typedef struct SDL_JoyHatEvent |
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239 { |
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240 Uint8 type; /**< SDL_JOYHATMOTION */ |
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241 Uint8 which; /**< The joystick device index */ |
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242 Uint8 hat; /**< The joystick hat index */ |
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243 Uint8 value; /**< The hat position value: |
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244 SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP |
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245 SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT |
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246 SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN |
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247 Note that zero means the POV is centered. |
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248 */ |
| 0 | 249 } SDL_JoyHatEvent; |
| 250 | |
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251 /** |
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252 * \struct SDL_JoyButtonEvent |
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253 * |
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254 * \brief Joystick button event structure |
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255 */ |
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256 typedef struct SDL_JoyButtonEvent |
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257 { |
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258 Uint8 type; /**< SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP */ |
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259 Uint8 which; /**< The joystick device index */ |
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260 Uint8 button; /**< The joystick button index */ |
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261 Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ |
| 0 | 262 } SDL_JoyButtonEvent; |
| 263 | |
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264 /** |
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265 * \struct SDL_QuitEvent |
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266 * |
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267 * \brief The "quit requested" event |
| 0 | 268 */ |
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269 typedef struct SDL_QuitEvent |
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270 { |
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271 Uint8 type; /**< SDL_QUIT */ |
| 0 | 272 } SDL_QuitEvent; |
| 273 | |
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274 /** |
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275 * \struct SDL_UserEvent |
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276 * |
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277 * \brief A user-defined event type |
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278 */ |
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279 typedef struct SDL_UserEvent |
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280 { |
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281 Uint8 type; /**< SDL_USEREVENT through SDL_NUMEVENTS-1 */ |
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282 int code; /**< User defined event code */ |
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283 void *data1; /**< User defined data pointer */ |
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284 void *data2; /**< User defined data pointer */ |
| 0 | 285 } SDL_UserEvent; |
| 286 | |
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287 /** |
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288 * \struct SDL_SysWMEvent |
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289 * |
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290 * \brief A video driver dependent system event |
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291 * |
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292 * \note If you want to use this event, you should include SDL_syswm.h |
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293 */ |
| 0 | 294 struct SDL_SysWMmsg; |
| 295 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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296 typedef struct SDL_SysWMEvent |
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297 { |
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298 Uint8 type; /**< SDL_SYSWMEVENT */ |
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299 SDL_SysWMmsg *msg; /**< driver dependent data, defined in SDL_syswm.h */ |
| 0 | 300 } SDL_SysWMEvent; |
| 301 | |
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302 /* Typedefs for backwards compatibility */ |
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303 typedef struct SDL_ActiveEvent |
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304 { |
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305 Uint8 type; |
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306 Uint8 gain; |
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307 Uint8 state; |
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308 } SDL_ActiveEvent; |
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309 typedef struct SDL_ResizeEvent |
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310 { |
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311 Uint8 type; |
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312 int w; |
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313 int h; |
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314 } SDL_ResizeEvent; |
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315 |
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316 /** |
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317 * \union SDL_Event |
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318 * |
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319 * \brief General event structure |
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320 */ |
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321 typedef union SDL_Event |
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322 { |
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323 Uint8 type; /**< Event type, shared with all events */ |
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324 SDL_WindowEvent window; /**< Window event data */ |
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325 SDL_KeyboardEvent key; /**< Keyboard event data */ |
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326 SDL_TextInputEvent text; /**< Text input event data */ |
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327 SDL_MouseMotionEvent motion; /**< Mouse motion event data */ |
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328 SDL_MouseButtonEvent button; /**< Mouse button event data */ |
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329 SDL_MouseWheelEvent wheel; /**< Mouse wheel event data */ |
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330 SDL_JoyAxisEvent jaxis; /**< Joystick axis event data */ |
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331 SDL_JoyBallEvent jball; /**< Joystick ball event data */ |
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332 SDL_JoyHatEvent jhat; /**< Joystick hat event data */ |
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333 SDL_JoyButtonEvent jbutton; /**< Joystick button event data */ |
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334 SDL_QuitEvent quit; /**< Quit request event data */ |
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335 SDL_UserEvent user; /**< Custom event data */ |
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336 SDL_SysWMEvent syswm; /**< System dependent window event data */ |
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337 |
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338 /* Temporarily here for backwards compatibility */ |
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339 SDL_ActiveEvent active; |
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340 SDL_ResizeEvent resize; |
| 0 | 341 } SDL_Event; |
| 342 | |
| 343 | |
| 344 /* Function prototypes */ | |
| 345 | |
| 346 /* Pumps the event loop, gathering events from the input devices. | |
| 347 This function updates the event queue and internal input device state. | |
| 348 This should only be run in the thread that sets the video mode. | |
| 349 */ | |
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350 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
| 0 | 351 |
| 352 /* Checks the event queue for messages and optionally returns them. | |
| 353 If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to | |
| 354 the back of the event queue. | |
| 355 If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front | |
| 356 of the event queue, matching 'mask', will be returned and will not | |
| 357 be removed from the queue. | |
| 358 If 'action' is SDL_GETEVENT, up to 'numevents' events at the front | |
| 359 of the event queue, matching 'mask', will be returned and will be | |
| 360 removed from the queue. | |
| 361 This function returns the number of events actually stored, or -1 | |
| 362 if there was an error. This function is thread-safe. | |
| 363 */ | |
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364 typedef enum |
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365 { |
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366 SDL_ADDEVENT, |
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367 SDL_PEEKEVENT, |
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368 SDL_GETEVENT |
| 0 | 369 } SDL_eventaction; |
| 370 /* */ | |
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371 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event * events, int numevents, |
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372 SDL_eventaction action, |
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373 Uint32 mask); |
| 0 | 374 |
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375 /* Checks to see if certain event types are in the event queue. |
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376 */ |
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377 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvent(Uint32 mask); |
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378 |
| 0 | 379 /* Polls for currently pending events, and returns 1 if there are any pending |
| 380 events, or 0 if there are none available. If 'event' is not NULL, the next | |
| 381 event is removed from the queue and stored in that area. | |
| 382 */ | |
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383 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event * event); |
| 0 | 384 |
| 385 /* Waits indefinitely for the next available event, returning 1, or 0 if there | |
| 386 was an error while waiting for events. If 'event' is not NULL, the next | |
| 387 event is removed from the queue and stored in that area. | |
| 388 */ | |
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389 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event * event); |
| 0 | 390 |
| 391 /* Add an event to the event queue. | |
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392 This function returns 0 on success, or -1 if the event queue was full |
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393 or there was some other error. |
| 0 | 394 */ |
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395 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event * event); |
| 0 | 396 |
| 397 /* | |
| 398 This function sets up a filter to process all events before they | |
| 399 change internal state and are posted to the internal event queue. | |
| 400 | |
| 401 The filter is protypted as: | |
| 402 */ | |
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403 typedef int (SDLCALL * SDL_EventFilter) (void *userdata, SDL_Event * event); |
| 0 | 404 /* |
| 405 If the filter returns 1, then the event will be added to the internal queue. | |
| 406 If it returns 0, then the event will be dropped from the queue, but the | |
| 407 internal state will still be updated. This allows selective filtering of | |
| 408 dynamically arriving events. | |
| 409 | |
| 410 WARNING: Be very careful of what you do in the event filter function, as | |
| 411 it may run in a different thread! | |
| 412 | |
| 413 There is one caveat when dealing with the SDL_QUITEVENT event type. The | |
| 414 event filter is only called when the window manager desires to close the | |
| 415 application window. If the event filter returns 1, then the window will | |
| 416 be closed, otherwise the window will remain open if possible. | |
| 417 If the quit event is generated by an interrupt signal, it will bypass the | |
| 418 internal queue and be delivered to the application at the next event poll. | |
| 419 */ | |
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420 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter, |
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421 void *userdata); |
| 0 | 422 |
| 423 /* | |
| 424 Return the current event filter - can be used to "chain" filters. | |
| 425 If there is no event filter set, this function returns NULL. | |
| 426 */ | |
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427 extern DECLSPEC SDL_EventFilter SDLCALL SDL_GetEventFilter(void **userdata); |
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428 |
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429 /* |
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430 Run the filter function on the current event queue, removing any |
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431 events for which the filter returns 0. |
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432 */ |
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433 extern DECLSPEC void SDLCALL SDL_FilterEvents(SDL_EventFilter filter, |
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434 void *userdata); |
| 0 | 435 |
| 436 /* | |
| 437 This function allows you to set the state of processing certain events. | |
| 438 If 'state' is set to SDL_IGNORE, that event will be automatically dropped | |
| 439 from the event queue and will not event be filtered. | |
| 440 If 'state' is set to SDL_ENABLE, that event will be processed normally. | |
| 441 If 'state' is set to SDL_QUERY, SDL_EventState() will return the | |
| 442 current processing state of the specified event. | |
| 443 */ | |
| 444 #define SDL_QUERY -1 | |
| 445 #define SDL_IGNORE 0 | |
| 446 #define SDL_DISABLE 0 | |
| 447 #define SDL_ENABLE 1 | |
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448 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint8 type, int state); |
| 0 | 449 |
| 450 | |
| 451 /* Ends C function definitions when using C++ */ | |
| 452 #ifdef __cplusplus | |
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453 /* *INDENT-OFF* */ |
| 0 | 454 } |
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455 /* *INDENT-ON* */ |
| 0 | 456 #endif |
| 457 #include "close_code.h" | |
| 458 | |
| 459 #endif /* _SDL_events_h */ | |
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460 |
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461 /* vi: set ts=4 sw=4 expandtab: */ |