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annotate docs/html/joystick.html @ 987:d9f3b5bb7870

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author Patrice Mandin <patmandin@gmail.com>
date Mon, 22 Nov 2004 20:36:59 +0000
parents 355632dca928
children
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1 <HTML
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2 ><HEAD
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3 ><TITLE
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4 >Joystick</TITLE
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5 ><META
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6 NAME="GENERATOR"
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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8 "><LINK
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9 REL="HOME"
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10 TITLE="SDL Library Documentation"
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11 HREF="index.html"><LINK
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12 REL="UP"
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13 TITLE="SDL Reference"
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14 HREF="reference.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_JoystickEventState"
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17 HREF="sdljoystickeventstate.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_NumJoysticks"
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20 HREF="sdlnumjoysticks.html"><META
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21 NAME="KEYWORD"
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22 CONTENT="joystick"><META
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23 NAME="KEYWORD"
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24 CONTENT="function"></HEAD
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25 ><BODY
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26 CLASS="CHAPTER"
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27 BGCOLOR="#FFF8DC"
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28 TEXT="#000000"
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29 LINK="#0000ee"
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30 VLINK="#551a8b"
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31 ALINK="#ff0000"
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32 ><DIV
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33 CLASS="NAVHEADER"
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34 ><TABLE
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35 SUMMARY="Header navigation table"
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36 WIDTH="100%"
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37 BORDER="0"
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38 CELLPADDING="0"
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39 CELLSPACING="0"
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40 ><TR
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41 ><TH
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42 COLSPAN="3"
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43 ALIGN="center"
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44 >SDL Library Documentation</TH
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45 ></TR
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46 ><TR
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47 ><TD
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48 WIDTH="10%"
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49 ALIGN="left"
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50 VALIGN="bottom"
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51 ><A
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52 HREF="sdljoystickeventstate.html"
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53 ACCESSKEY="P"
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54 >Prev</A
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55 ></TD
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56 ><TD
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57 WIDTH="80%"
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58 ALIGN="center"
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59 VALIGN="bottom"
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60 ></TD
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61 ><TD
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62 WIDTH="10%"
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63 ALIGN="right"
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64 VALIGN="bottom"
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65 ><A
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66 HREF="sdlnumjoysticks.html"
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67 ACCESSKEY="N"
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68 >Next</A
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69 ></TD
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70 ></TR
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71 ></TABLE
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72 ><HR
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73 ALIGN="LEFT"
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74 WIDTH="100%"></DIV
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75 ><DIV
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76 CLASS="CHAPTER"
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77 ><H1
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78 ><A
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79 NAME="JOYSTICK"
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80 ></A
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81 >Chapter 9. Joystick</H1
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82 ><DIV
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83 CLASS="TOC"
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84 ><DL
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85 ><DT
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86 ><B
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87 >Table of Contents</B
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88 ></DT
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89 ><DT
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90 ><A
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91 HREF="sdlnumjoysticks.html"
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92 >SDL_NumJoysticks</A
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93 >&nbsp;--&nbsp;Count available joysticks.</DT
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94 ><DT
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95 ><A
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96 HREF="sdljoystickname.html"
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97 >SDL_JoystickName</A
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98 >&nbsp;--&nbsp;Get joystick name.</DT
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99 ><DT
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100 ><A
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101 HREF="sdljoystickopen.html"
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102 >SDL_JoystickOpen</A
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103 >&nbsp;--&nbsp;Opens a joystick for use.</DT
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104 ><DT
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105 ><A
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106 HREF="sdljoystickopened.html"
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107 >SDL_JoystickOpened</A
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108 >&nbsp;--&nbsp;Determine if a joystick has been opened</DT
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109 ><DT
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110 ><A
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111 HREF="sdljoystickindex.html"
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112 >SDL_JoystickIndex</A
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113 >&nbsp;--&nbsp;Get the index of an SDL_Joystick.</DT
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114 ><DT
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115 ><A
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116 HREF="sdljoysticknumaxes.html"
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117 >SDL_JoystickNumAxes</A
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118 >&nbsp;--&nbsp;Get the number of joystick axes</DT
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119 ><DT
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120 ><A
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121 HREF="sdljoysticknumballs.html"
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122 >SDL_JoystickNumBalls</A
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123 >&nbsp;--&nbsp;Get the number of joystick trackballs</DT
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124 ><DT
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125 ><A
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126 HREF="sdljoysticknumhats.html"
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127 >SDL_JoystickNumHats</A
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128 >&nbsp;--&nbsp;Get the number of joystick hats</DT
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129 ><DT
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130 ><A
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131 HREF="sdljoysticknumbuttons.html"
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132 >SDL_JoystickNumButtons</A
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133 >&nbsp;--&nbsp;Get the number of joysitck buttons</DT
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134 ><DT
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135 ><A
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136 HREF="sdljoystickupdate.html"
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137 >SDL_JoystickUpdate</A
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138 >&nbsp;--&nbsp;Updates the state of all joysticks</DT
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139 ><DT
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140 ><A
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141 HREF="sdljoystickgetaxis.html"
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142 >SDL_JoystickGetAxis</A
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143 >&nbsp;--&nbsp;Get the current state of an axis</DT
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144 ><DT
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145 ><A
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146 HREF="sdljoystickgethat.html"
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147 >SDL_JoystickGetHat</A
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148 >&nbsp;--&nbsp;Get the current state of a joystick hat</DT
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149 ><DT
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150 ><A
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151 HREF="sdljoystickgetbutton.html"
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152 >SDL_JoystickGetButton</A
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153 >&nbsp;--&nbsp;Get the current state of a given button on a given joystick</DT
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154 ><DT
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155 ><A
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156 HREF="sdljoystickgetball.html"
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157 >SDL_JoystickGetBall</A
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158 >&nbsp;--&nbsp;Get relative trackball motion</DT
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159 ><DT
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160 ><A
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161 HREF="sdljoystickclose.html"
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162 >SDL_JoystickClose</A
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163 >&nbsp;--&nbsp;Closes a previously opened joystick</DT
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164 ></DL
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165 ></DIV
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166 ><P
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167 >Joysticks, and other similar input devices, have a very strong role in game playing and SDL provides comprehensive support for them. Axes, Buttons, POV Hats and trackballs are all supported.</P
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168 ><P
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169 >Joystick support is initialized by passed the <TT
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170 CLASS="LITERAL"
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171 >SDL_INIT_JOYSTICK</TT
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172 > flag to <A
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173 HREF="sdlinit.html"
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174 ><TT
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175 CLASS="FUNCTION"
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176 >SDL_Init</TT
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177 ></A
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178 >. Once initilized joysticks must be opened using <A
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179 HREF="sdljoystickopen.html"
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180 ><TT
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181 CLASS="FUNCTION"
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182 >SDL_JoystickOpen</TT
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183 ></A
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184 >.</P
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185 ><P
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186 >While using the functions describe in this secton may seem like the best way to access and read from joysticks, in most cases they aren't. Ideally joysticks should be read using the <A
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187 HREF="event.html"
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188 >event</A
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189 > system. To enable this, you must set the joystick event processing state with <A
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190 HREF="sdljoystickeventstate.html"
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191 ><TT
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192 CLASS="FUNCTION"
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193 >SDL_JoystickEventState</TT
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194 ></A
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195 >. Joysticks must be <A
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196 HREF="sdljoystickopen.html"
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197 >opened</A
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198 > before they can be used of course.</P
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199 ><DIV
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200 CLASS="NOTE"
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201 ><BLOCKQUOTE
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202 CLASS="NOTE"
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203 ><P
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204 ><B
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205 >Note: </B
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206 >If you are <SPAN
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207 CLASS="emphasis"
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208 ><I
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209 CLASS="EMPHASIS"
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210 >not</I
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211 ></SPAN
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212 > handling the joystick via the event queue then you must explicitly request a joystick update by calling <A
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213 HREF="sdljoystickupdate.html"
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214 ><TT
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215 CLASS="FUNCTION"
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216 >SDL_JoystickUpdate</TT
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217 ></A
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218 >.</P
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219 ></BLOCKQUOTE
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220 ></DIV
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221 ><DIV
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222 CLASS="NOTE"
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223 ><BLOCKQUOTE
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224 CLASS="NOTE"
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225 ><P
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226 ><B
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227 >Note: </B
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228 >Force Feedback is not yet support. Sam (slouken@libsdl.org) is soliciting suggestions from people with force-feedback experience on the best wat to desgin the API.</P
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229 ></BLOCKQUOTE
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230 ></DIV
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231 ></DIV
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232 ><DIV
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233 CLASS="NAVFOOTER"
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234 ><HR
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235 ALIGN="LEFT"
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236 WIDTH="100%"><TABLE
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237 SUMMARY="Footer navigation table"
0
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238 WIDTH="100%"
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239 BORDER="0"
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240 CELLPADDING="0"
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241 CELLSPACING="0"
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242 ><TR
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243 ><TD
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244 WIDTH="33%"
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245 ALIGN="left"
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246 VALIGN="top"
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247 ><A
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248 HREF="sdljoystickeventstate.html"
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249 ACCESSKEY="P"
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250 >Prev</A
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251 ></TD
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252 ><TD
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253 WIDTH="34%"
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254 ALIGN="center"
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255 VALIGN="top"
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256 ><A
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257 HREF="index.html"
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258 ACCESSKEY="H"
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259 >Home</A
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260 ></TD
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261 ><TD
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262 WIDTH="33%"
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263 ALIGN="right"
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264 VALIGN="top"
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265 ><A
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266 HREF="sdlnumjoysticks.html"
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267 ACCESSKEY="N"
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268 >Next</A
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269 ></TD
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270 ></TR
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271 ><TR
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272 ><TD
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273 WIDTH="33%"
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274 ALIGN="left"
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275 VALIGN="top"
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276 >SDL_JoystickEventState</TD
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277 ><TD
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278 WIDTH="34%"
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279 ALIGN="center"
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280 VALIGN="top"
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281 ><A
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282 HREF="reference.html"
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283 ACCESSKEY="U"
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284 >Up</A
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285 ></TD
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286 ><TD
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287 WIDTH="33%"
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288 ALIGN="right"
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289 VALIGN="top"
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290 >SDL_NumJoysticks</TD
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291 ></TR
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292 ></TABLE
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293 ></DIV
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294 ></BODY
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295 ></HTML
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296 >