Mercurial > sdl-ios-xcode

annotate src/video/ataricommon/SDL_biosevents.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 BIOS
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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 bios_currentkeyboard[ATARIBIOS_MAXKEYS];
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50 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
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51 static unsigned char bios_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 /* The translation tables from a console scancode to a SDL keysym */
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65 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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66
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67 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym);
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68 static void UpdateSpecialKeys(int special_keys_state);
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69
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70 void AtariBios_InitOSKeymap(_THIS)
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71 {
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72 int i;
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73
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74 memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
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75 memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
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76
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77 /* Initialize keymap */
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78 for ( i=0; i<sizeof(keymap); i++ )
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79 keymap[i] = SDLK_UNKNOWN;
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80
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81 /* Functions keys */
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82 for ( i = 0; i<10; i++ )
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83 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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84
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85 /* Cursor keypad */
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86 keymap[SCANCODE_HELP] = SDLK_HELP;
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87 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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88 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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89 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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90 keymap[SCANCODE_UP] = SDLK_UP;
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91 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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92 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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93 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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94
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95 /* Special keys */
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96 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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97 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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98 keymap[SCANCODE_TAB] = SDLK_TAB;
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99 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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100 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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101 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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102 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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103 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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104 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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105 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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106
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107 SDL_AtariXbios_InstallVectors(ATARI_XBIOS_MOUSEEVENTS|ATARI_XBIOS_JOYSTICKEVENTS);
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108 }
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109
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110 void AtariBios_PumpEvents(_THIS)
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111 {
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112 int i;
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113 SDL_keysym keysym;
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114
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115 /* Update pressed keys */
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116 memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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117
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118 while (Bconstat(_CON)) {
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119 unsigned long key_pressed;
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120 unsigned char asciicode, scancode;
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121
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122 key_pressed=Bconin(_CON);
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123
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124 asciicode = key_pressed;
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125 scancode = key_pressed >> 16;
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126
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127 bios_currentkeyboard[scancode]=0xFF;
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128 bios_currentascii[scancode]=asciicode;
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129 }
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130
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131 /* Read special keys */
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132 UpdateSpecialKeys(Kbshift(-1));
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133
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134 /* Now generate events */
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135 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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136 /* Key pressed ? */
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137 if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
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138 SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, bios_currentascii[i], &keysym));
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139
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140 /* Key unpressed ? */
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141 if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
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142 SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, bios_currentascii[i], &keysym));
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143 }
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144
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145 SDL_AtariXbios_PostMouseEvents(this);
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146
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147 /* Will be previous table */
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148 memcpy(bios_previouskeyboard, bios_currentkeyboard, ATARIBIOS_MAXKEYS);
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149 }
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150
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151 static void UpdateSpecialKeys(int special_keys_state)
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152 {
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153 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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154 { \
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155 if (special_keys_state & (1<<(numbit))) { \
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156 bios_currentkeyboard[scancode]=0xFF; \
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157 bios_currentascii[scancode]=0; \
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158 } \
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159 }
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160
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161 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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162 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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163 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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164 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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165 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
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166 }
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167
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168 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym)
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169 {
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170 /* Set the keysym information */
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171 keysym->scancode = scancode;
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172
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173 if (asciicode)
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174 keysym->sym = asciicode;
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175 else
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176 keysym->sym = keymap[scancode];
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177
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178 keysym->mod = KMOD_NONE;
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179 keysym->unicode = 0;
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180
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181 return(keysym);
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182 }
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183
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184 void AtariBios_ShutdownEvents(void)
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185 {
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186 SDL_AtariXbios_RestoreVectors();
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187 }