Mercurial > sdl-ios-xcode

annotate src/video/ataricommon/SDL_gemdosevents.c @ 1050:8e1815fd9777

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Holding down shift while moving the mouse's scrollwheel on MacOS X makes the OS report these are "horizontal scrollwheel" events, which confuses gaming apps in several legitimate conditions. Now all scrollwheel events are made to look vertical when passed to the app. Patch by John Knottenbelt. http://www.libsdl.org/pipermail/sdl/2005-March/067978.html
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 17 Apr 2005 10:32:41 +0000
parents b8d311d90021
children a55ac374271c
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * Atari keyboard events manager, using Gemdos
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30 *
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31 * Patrice Mandin
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32 */
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33
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34 #include <string.h>
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35
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36 /* Mint includes */
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37 #include <mint/osbind.h>
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38
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39 #include "SDL.h"
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40 #include "SDL_sysevents.h"
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41 #include "SDL_events_c.h"
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42
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43 #include "SDL_atarikeys.h"
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44 #include "SDL_xbiosevents_c.h"
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45
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46 /* To save state of keyboard */
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47 #define ATARIBIOS_MAXKEYS 128
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48
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49 static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
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50 static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
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51 static unsigned char gemdos_currentascii[ATARIBIOS_MAXKEYS];
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52
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53 /* Special keys state */
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54 enum {
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55 K_RSHIFT=0,
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56 K_LSHIFT,
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57 K_CTRL,
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58 K_ALT,
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59 K_CAPSLOCK,
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60 K_CLRHOME,
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61 K_INSERT
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62 };
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63
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64 enum {
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65 DEV_BUSY=0,
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66 DEV_READY
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67 };
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68
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69 /* The translation tables from a console scancode to a SDL keysym */
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70 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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71
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72 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym);
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73 static void UpdateSpecialKeys(int special_keys_state);
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74
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75 void AtariGemdos_InitOSKeymap(_THIS)
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76 {
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77 int i;
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78
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79 memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
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80 memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
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81
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82 /* Initialize keymap */
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83 for ( i=0; i<sizeof(keymap); i++ )
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84 keymap[i] = SDLK_UNKNOWN;
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85
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86 /* Functions keys */
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87 for ( i = 0; i<10; i++ )
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88 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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89
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90 /* Cursor keypad */
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91 keymap[SCANCODE_HELP] = SDLK_HELP;
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92 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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93 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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94 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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95 keymap[SCANCODE_UP] = SDLK_UP;
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96 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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97 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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98 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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99
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100 /* Special keys */
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101 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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102 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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103 keymap[SCANCODE_TAB] = SDLK_TAB;
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104 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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105 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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106 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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107 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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108 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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109 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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110 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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111
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112 SDL_AtariXbios_InstallVectors(ATARI_XBIOS_MOUSEEVENTS|ATARI_XBIOS_JOYSTICKEVENTS);
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113 }
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114
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115 void AtariGemdos_PumpEvents(_THIS)
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116 {
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117 int i;
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118 SDL_keysym keysym;
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119
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120 /* Update pressed keys */
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121 memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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122
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123 while (Cconis()!=DEV_BUSY) {
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124 unsigned long key_pressed;
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125 unsigned char scancode, asciicode;
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126
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127 key_pressed=Cnecin();
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128
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129 asciicode = key_pressed;
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130 scancode = key_pressed >> 16;
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131
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132 gemdos_currentkeyboard[scancode]=0xFF;
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133 gemdos_currentascii[scancode]=asciicode;
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134 }
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135
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136 /* Read special keys */
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137 UpdateSpecialKeys(Kbshift(-1));
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138
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139 /* Now generate events */
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140 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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141 /* Key pressed ? */
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142 if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
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143 SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, gemdos_currentascii[i], &keysym));
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144
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145 /* Key unpressed ? */
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146 if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
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147 SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, gemdos_currentascii[i], &keysym));
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148 }
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149
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150 SDL_AtariXbios_PostMouseEvents(this);
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151
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152 /* Will be previous table */
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153 memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, ATARIBIOS_MAXKEYS);
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154 }
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155
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156 static void UpdateSpecialKeys(int special_keys_state)
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157 {
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158 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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159 { \
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160 if (special_keys_state & (1<<(numbit))) { \
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161 gemdos_currentkeyboard[scancode]=0xFF; \
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162 gemdos_currentascii[scancode]=0; \
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163 } \
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164 }
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165
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166 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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167 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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168 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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169 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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170 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
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171 }
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172
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173 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym)
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174 {
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175 /* Set the keysym information */
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176 keysym->scancode = scancode;
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177
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178 if (asciicode)
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179 keysym->sym = asciicode;
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180 else
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181 keysym->sym = keymap[scancode];
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182
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183 keysym->mod = KMOD_NONE;
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184 keysym->unicode = 0;
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185
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186 return(keysym);
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187 }
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188
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189 void AtariGemdos_ShutdownEvents(void)
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190 {
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191 SDL_AtariXbios_RestoreVectors();
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192 }