Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 4638:08d22c54a21f
Don't need to use strlen() to determine if there's text.
Use the SDL safe strcpy() function
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 22 Aug 2010 11:56:07 -0700 |
parents | 0a07d002f10b |
children | c24ba2cc9583 |
rev | line source |
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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 or multiple mice input device events */ |
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79 SDL_INPUTMOTION = 0x500, /**< Input moved */ |
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80 SDL_INPUTBUTTONDOWN, /**< Input button pressed */ |
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81 SDL_INPUTBUTTONUP, /**< Input button released */ |
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82 SDL_INPUTWHEEL, /**< Input wheel motion */ |
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83 SDL_INPUTPROXIMITYIN, /**< Input pen entered proximity */ |
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84 SDL_INPUTPROXIMITYOUT, /**< Input pen left proximity */ |
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85 |
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86 /* Joystick events */ |
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87 SDL_JOYAXISMOTION = 0x600, /**< Joystick axis motion */ |
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88 SDL_JOYBALLMOTION, /**< Joystick trackball motion */ |
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89 SDL_JOYHATMOTION, /**< Joystick hat position change */ |
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90 SDL_JOYBUTTONDOWN, /**< Joystick button pressed */ |
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91 SDL_JOYBUTTONUP, /**< Joystick button released */ |
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92 |
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93 /* Clipboard events */ |
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94 SDL_CLIPBOARDUPDATE = 0x700, /**< The clipboard changed */ |
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95 |
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96 /* Obsolete events */ |
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97 SDL_EVENT_COMPAT1 = 0x7000, /**< SDL 1.2 events for compatibility */ |
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98 SDL_EVENT_COMPAT2, |
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99 SDL_EVENT_COMPAT3, |
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100 |
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101 /** Events ::SDL_USEREVENT through ::SDL_LASTEVENT are for your use, |
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102 * and should be allocated with SDL_RegisterEvents() |
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103 */ |
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104 SDL_USEREVENT = 0x8000, |
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105 |
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106 /** |
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107 * This last event is only for bounding internal arrays |
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108 */ |
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109 SDL_LASTEVENT = 0xFFFF |
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110 } SDL_EventType; |
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112 /** |
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113 * \brief Window state change event data (event.window.*) |
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114 */ |
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115 typedef struct SDL_WindowEvent |
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116 { |
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117 Uint32 type; /**< ::SDL_WINDOWEVENT */ |
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118 Uint32 windowID; /**< The associated window */ |
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119 Uint8 event; /**< ::SDL_WindowEventID */ |
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120 Uint8 padding1; |
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121 Uint8 padding2; |
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122 Uint8 padding3; |
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123 int data1; /**< event dependent data */ |
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124 int data2; /**< event dependent data */ |
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125 } SDL_WindowEvent; |
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127 /** |
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128 * \brief Keyboard button event structure (event.key.*) |
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129 */ |
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130 typedef struct SDL_KeyboardEvent |
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131 { |
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132 Uint32 type; /**< ::SDL_KEYDOWN or ::SDL_KEYUP */ |
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133 Uint32 windowID; /**< The window with keyboard focus, if any */ |
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134 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */ |
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135 Uint8 repeat; /**< Non-zero if this is a key repeat */ |
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136 Uint8 padding2; |
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137 Uint8 padding3; |
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138 SDL_keysym keysym; /**< The key that was pressed or released */ |
0 | 139 } SDL_KeyboardEvent; |
140 | |
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141 #define SDL_TEXTEDITINGEVENT_TEXT_SIZE (32) |
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142 /** |
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143 * \brief Keyboard text editing event structure (event.edit.*) |
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144 */ |
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145 typedef struct SDL_TextEditingEvent |
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146 { |
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147 Uint32 type; /**< ::SDL_TEXTEDITING */ |
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148 Uint32 windowID; /**< The window with keyboard focus, if any */ |
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149 char text[SDL_TEXTEDITINGEVENT_TEXT_SIZE]; /**< The editing text */ |
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150 int start; /**< The start cursor of selected editing text */ |
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151 int length; /**< The length of selected editing text */ |
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152 } SDL_TextEditingEvent; |
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153 |
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154 |
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155 #define SDL_TEXTINPUTEVENT_TEXT_SIZE (32) |
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156 /** |
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157 * \brief Keyboard text input event structure (event.text.*) |
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158 */ |
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159 typedef struct SDL_TextInputEvent |
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160 { |
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161 Uint32 type; /**< ::SDL_TEXTINPUT */ |
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162 Uint32 windowID; /**< The window with keyboard focus, if any */ |
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163 char text[SDL_TEXTINPUTEVENT_TEXT_SIZE]; /**< The input text */ |
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164 } SDL_TextInputEvent; |
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165 |
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166 /** |
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167 * \brief Mouse motion event structure (event.motion.*) |
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168 */ |
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169 typedef struct SDL_MouseMotionEvent |
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170 { |
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171 Uint32 type; /**< ::SDL_MOUSEMOTION */ |
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172 Uint32 windowID; /**< The window with mouse focus, if any */ |
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173 Uint8 state; /**< The current button state */ |
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174 Uint8 padding1; |
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175 Uint8 padding2; |
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176 Uint8 padding3; |
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177 int x; /**< X coordinate, relative to window */ |
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178 int y; /**< Y coordinate, relative to window */ |
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179 int xrel; /**< The relative motion in the X direction */ |
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180 int yrel; /**< The relative motion in the Y direction */ |
0 | 181 } SDL_MouseMotionEvent; |
182 | |
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183 /** |
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184 * \brief Mouse button event structure (event.button.*) |
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185 */ |
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186 typedef struct SDL_MouseButtonEvent |
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187 { |
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188 Uint32 type; /**< ::SDL_MOUSEBUTTONDOWN or ::SDL_MOUSEBUTTONUP */ |
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189 Uint32 windowID; /**< The window with mouse focus, if any */ |
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190 Uint8 button; /**< The mouse button index */ |
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191 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */ |
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192 Uint8 padding1; |
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193 Uint8 padding2; |
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194 int x; /**< X coordinate, relative to window */ |
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195 int y; /**< Y coordinate, relative to window */ |
0 | 196 } SDL_MouseButtonEvent; |
197 | |
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198 /** |
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199 * \brief Mouse wheel event structure (event.wheel.*) |
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200 */ |
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201 typedef struct SDL_MouseWheelEvent |
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202 { |
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203 Uint32 type; /**< ::SDL_MOUSEWHEEL */ |
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204 Uint32 windowID; /**< The window with mouse focus, if any */ |
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205 int x; /**< The amount scrolled horizontally */ |
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206 int y; /**< The amount scrolled vertically */ |
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207 } SDL_MouseWheelEvent; |
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208 |
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209 /** |
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210 * \brief Joystick axis motion event structure (event.jaxis.*) |
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211 */ |
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212 typedef struct SDL_JoyAxisEvent |
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213 { |
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214 Uint32 type; /**< ::SDL_JOYAXISMOTION */ |
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215 Uint8 which; /**< The joystick device index */ |
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216 Uint8 axis; /**< The joystick axis index */ |
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217 Uint8 padding1; |
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218 Uint8 padding2; |
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219 int value; /**< The axis value (range: -32768 to 32767) */ |
0 | 220 } SDL_JoyAxisEvent; |
221 | |
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222 /** |
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223 * \brief Joystick trackball motion event structure (event.jball.*) |
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224 */ |
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225 typedef struct SDL_JoyBallEvent |
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226 { |
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227 Uint32 type; /**< ::SDL_JOYBALLMOTION */ |
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228 Uint8 which; /**< The joystick device index */ |
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229 Uint8 ball; /**< The joystick trackball index */ |
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230 Uint8 padding1; |
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231 Uint8 padding2; |
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232 int xrel; /**< The relative motion in the X direction */ |
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233 int yrel; /**< The relative motion in the Y direction */ |
0 | 234 } SDL_JoyBallEvent; |
235 | |
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236 /** |
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237 * \brief Joystick hat position change event structure (event.jhat.*) |
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238 */ |
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239 typedef struct SDL_JoyHatEvent |
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240 { |
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241 Uint32 type; /**< ::SDL_JOYHATMOTION */ |
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242 Uint8 which; /**< The joystick device index */ |
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243 Uint8 hat; /**< The joystick hat index */ |
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244 Uint8 value; /**< The hat position value. |
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245 * \sa ::SDL_HAT_LEFTUP ::SDL_HAT_UP ::SDL_HAT_RIGHTUP |
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246 * \sa ::SDL_HAT_LEFT ::SDL_HAT_CENTERED ::SDL_HAT_RIGHT |
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247 * \sa ::SDL_HAT_LEFTDOWN ::SDL_HAT_DOWN ::SDL_HAT_RIGHTDOWN |
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248 * |
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249 * Note that zero means the POV is centered. |
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250 */ |
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251 Uint8 padding1; |
0 | 252 } SDL_JoyHatEvent; |
253 | |
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254 /** |
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255 * \brief Joystick button event structure (event.jbutton.*) |
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256 */ |
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257 typedef struct SDL_JoyButtonEvent |
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258 { |
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259 Uint32 type; /**< ::SDL_JOYBUTTONDOWN or ::SDL_JOYBUTTONUP */ |
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260 Uint8 which; /**< The joystick device index */ |
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261 Uint8 button; /**< The joystick button index */ |
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262 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */ |
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263 Uint8 padding1; |
0 | 264 } SDL_JoyButtonEvent; |
265 | |
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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 Uint32 type; /**< ::SDL_QUIT */ |
0 | 272 } SDL_QuitEvent; |
273 | |
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274 /** |
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275 * \brief A user-defined event type (event.user.*) |
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276 */ |
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277 typedef struct SDL_UserEvent |
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278 { |
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279 Uint32 type; /**< ::SDL_USEREVENT through ::SDL_NUMEVENTS-1 */ |
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280 Uint32 windowID; /**< The associated window if any */ |
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281 int code; /**< User defined event code */ |
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282 void *data1; /**< User defined data pointer */ |
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283 void *data2; /**< User defined data pointer */ |
0 | 284 } SDL_UserEvent; |
285 | |
286 struct SDL_SysWMmsg; | |
287 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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288 |
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289 /** |
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290 * \brief A video driver dependent system event (event.syswm.*) |
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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 */ |
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294 typedef struct SDL_SysWMEvent |
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295 { |
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296 Uint32 type; /**< ::SDL_SYSWMEVENT */ |
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297 SDL_SysWMmsg *msg; /**< driver dependent data, defined in SDL_syswm.h */ |
0 | 298 } SDL_SysWMEvent; |
299 | |
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300 #ifndef SDL_NO_COMPAT |
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301 /** |
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302 * \addtogroup Compatibility |
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303 */ |
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304 /*@{*/ |
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305 |
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306 /** |
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307 * \name Typedefs for backwards compatibility |
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308 */ |
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309 /*@{*/ |
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310 typedef struct SDL_ActiveEvent |
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311 { |
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312 Uint32 type; |
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313 Uint8 gain; |
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314 Uint8 state; |
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315 } SDL_ActiveEvent; |
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316 |
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317 typedef struct SDL_ResizeEvent |
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318 { |
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319 Uint32 type; |
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320 int w; |
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321 int h; |
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322 } SDL_ResizeEvent; |
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323 /*@}*/ |
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324 |
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325 /*@}*//*Compatibility*/ |
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326 #endif |
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327 |
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328 /** |
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329 * \brief General event structure |
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330 */ |
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331 typedef union SDL_Event |
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332 { |
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333 Uint32 type; /**< Event type, shared with all events */ |
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334 SDL_WindowEvent window; /**< Window event data */ |
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335 SDL_KeyboardEvent key; /**< Keyboard event data */ |
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336 SDL_TextEditingEvent edit; /**< Text editing event data */ |
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337 SDL_TextInputEvent text; /**< Text input event data */ |
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338 SDL_MouseMotionEvent motion; /**< Mouse motion event data */ |
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339 SDL_MouseButtonEvent button; /**< Mouse button event data */ |
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340 SDL_MouseWheelEvent wheel; /**< Mouse wheel event data */ |
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341 SDL_JoyAxisEvent jaxis; /**< Joystick axis event data */ |
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342 SDL_JoyBallEvent jball; /**< Joystick ball event data */ |
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343 SDL_JoyHatEvent jhat; /**< Joystick hat event data */ |
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344 SDL_JoyButtonEvent jbutton; /**< Joystick button event data */ |
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345 SDL_QuitEvent quit; /**< Quit request event data */ |
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346 SDL_UserEvent user; /**< Custom event data */ |
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347 SDL_SysWMEvent syswm; /**< System dependent window event data */ |
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348 |
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349 /** Temporarily here for backwards compatibility */ |
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350 /*@{*/ |
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351 #ifndef SDL_NO_COMPAT |
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352 SDL_ActiveEvent active; |
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353 SDL_ResizeEvent resize; |
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354 #endif |
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355 /*@}*/ |
0 | 356 } SDL_Event; |
357 | |
358 | |
359 /* Function prototypes */ | |
360 | |
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361 /** |
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362 * Pumps the event loop, gathering events from the input devices. |
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363 * |
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364 * This function updates the event queue and internal input device state. |
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365 * |
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366 * This should only be run in the thread that sets the video mode. |
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367 */ |
337
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368 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
0 | 369 |
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370 /*@{*/ |
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371 typedef enum |
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372 { |
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373 SDL_ADDEVENT, |
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374 SDL_PEEKEVENT, |
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375 SDL_GETEVENT |
0 | 376 } SDL_eventaction; |
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377 |
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378 /** |
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379 * Checks the event queue for messages and optionally returns them. |
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380 * |
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381 * If \c action is ::SDL_ADDEVENT, up to \c numevents events will be added to |
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382 * the back of the event queue. |
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383 * |
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384 * If \c action is ::SDL_PEEKEVENT, up to \c numevents events at the front |
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385 * of the event queue, within the specified minimum and maximum type, |
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386 * will be returned and will not be removed from the queue. |
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387 * |
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388 * If \c action is ::SDL_GETEVENT, up to \c numevents events at the front |
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389 * of the event queue, within the specified minimum and maximum type, |
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390 * will be returned and will be removed from the queue. |
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391 * |
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392 * \return The number of events actually stored, or -1 if there was an error. |
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393 * |
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394 * This function is thread-safe. |
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395 */ |
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396 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event * events, int numevents, |
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397 SDL_eventaction action, |
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398 Uint32 minType, Uint32 maxType); |
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399 /*@}*/ |
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400 |
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401 /** |
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402 * Checks to see if certain event types are in the event queue. |
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403 */ |
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404 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvent(Uint32 type); |
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405 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvents(Uint32 minType, Uint32 maxType); |
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406 |
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407 /** |
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408 * This function clears events from the event queue |
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409 */ |
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410 extern DECLSPEC void SDLCALL SDL_FlushEvent(Uint32 type); |
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411 extern DECLSPEC void SDLCALL SDL_FlushEvents(Uint32 minType, Uint32 maxType); |
0 | 412 |
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413 /** |
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414 * \brief Polls for currently pending events. |
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415 * |
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416 * \return 1 if there are any pending events, or 0 if there are none available. |
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417 * |
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418 * \param event If not NULL, the next event is removed from the queue and |
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419 * stored in that area. |
0 | 420 */ |
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421 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event * event); |
0 | 422 |
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423 /** |
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424 * \brief Waits indefinitely for the next available event. |
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425 * |
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426 * \return 1, or 0 if there was an error while waiting for events. |
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427 * |
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428 * \param event If not NULL, the next event is removed from the queue and |
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429 * stored in that area. |
0 | 430 */ |
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431 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event * event); |
0 | 432 |
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433 /** |
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434 * \brief Waits until the specified timeout (in milliseconds) for the next |
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435 * available event. |
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436 * |
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437 * \return 1, or 0 if there was an error while waiting for events. |
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438 * |
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439 * \param event If not NULL, the next event is removed from the queue and |
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440 * stored in that area. |
3072 | 441 */ |
442 extern DECLSPEC int SDLCALL SDL_WaitEventTimeout(SDL_Event * event, | |
443 int timeout); | |
444 | |
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445 /** |
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446 * \brief Add an event to the event queue. |
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447 * |
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448 * \return 1 on success, 0 if the event was filtered, or -1 if the event queue |
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449 * was full or there was some other error. |
0 | 450 */ |
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451 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event * event); |
0 | 452 |
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453 typedef int (SDLCALL * SDL_EventFilter) (void *userdata, SDL_Event * event); |
0 | 454 |
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455 /** |
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456 * Sets up a filter to process all events before they change internal state and |
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457 * are posted to the internal event queue. |
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458 * |
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459 * The filter is protypted as: |
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460 * \code |
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461 * int SDL_EventFilter(void *userdata, SDL_Event * event); |
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462 * \endcode |
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463 * |
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464 * If the filter returns 1, then the event will be added to the internal queue. |
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465 * If it returns 0, then the event will be dropped from the queue, but the |
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466 * internal state will still be updated. This allows selective filtering of |
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467 * dynamically arriving events. |
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468 * |
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469 * \warning Be very careful of what you do in the event filter function, as |
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470 * it may run in a different thread! |
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471 * |
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472 * There is one caveat when dealing with the ::SDL_QUITEVENT event type. The |
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473 * event filter is only called when the window manager desires to close the |
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474 * application window. If the event filter returns 1, then the window will |
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475 * be closed, otherwise the window will remain open if possible. |
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476 * |
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477 * If the quit event is generated by an interrupt signal, it will bypass the |
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478 * internal queue and be delivered to the application at the next event poll. |
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479 */ |
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480 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter, |
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481 void *userdata); |
0 | 482 |
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483 /** |
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484 * Return the current event filter - can be used to "chain" filters. |
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485 * If there is no event filter set, this function returns SDL_FALSE. |
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486 */ |
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487 extern DECLSPEC SDL_bool SDLCALL SDL_GetEventFilter(SDL_EventFilter * filter, |
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488 void **userdata); |
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489 |
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490 /** |
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491 * Run the filter function on the current event queue, removing any |
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492 * events for which the filter returns 0. |
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493 */ |
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494 extern DECLSPEC void SDLCALL SDL_FilterEvents(SDL_EventFilter filter, |
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495 void *userdata); |
0 | 496 |
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497 /*@{*/ |
0 | 498 #define SDL_QUERY -1 |
499 #define SDL_IGNORE 0 | |
500 #define SDL_DISABLE 0 | |
501 #define SDL_ENABLE 1 | |
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502 |
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503 /** |
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504 * This function allows you to set the state of processing certain events. |
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505 * - If \c state is set to ::SDL_IGNORE, that event will be automatically |
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506 * dropped from the event queue and will not event be filtered. |
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507 * - If \c state is set to ::SDL_ENABLE, that event will be processed |
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508 * normally. |
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509 * - If \c state is set to ::SDL_QUERY, SDL_EventState() will return the |
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510 * current processing state of the specified event. |
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511 */ |
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512 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint32 type, int state); |
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513 /*@}*/ |
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514 #define SDL_GetEventState(type) SDL_EventState(type, SDL_QUERY) |
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515 |
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516 /** |
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517 * This function allocates a set of user-defined events, and returns |
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518 * the beginning event number for that set of events. |
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519 * |
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520 * If there aren't enough user-defined events left, this function |
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521 * returns (Uint32)-1 |
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Sam Lantinga <slouken@libsdl.org>
parents:
3697
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522 */ |
faa9fc8e7f67
General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents:
3697
diff
changeset
|
523 extern DECLSPEC Uint32 SDLCALL SDL_RegisterEvents(int numevents); |
0 | 524 |
525 /* Ends C function definitions when using C++ */ | |
526 #ifdef __cplusplus | |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
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527 /* *INDENT-OFF* */ |
0 | 528 } |
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c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
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changeset
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529 /* *INDENT-ON* */ |
0 | 530 #endif |
531 #include "close_code.h" | |
532 | |
533 #endif /* _SDL_events_h */ | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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534 |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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535 /* vi: set ts=4 sw=4 expandtab: */ |