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1 <HTML |
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2 ><HEAD |
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3 ><TITLE |
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4 >SDL_JoystickOpen</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="Joystick" |
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14 HREF="joystick.html"><LINK |
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15 REL="PREVIOUS" |
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16 TITLE="SDL_JoystickName" |
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17 HREF="sdljoystickname.html"><LINK |
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18 REL="NEXT" |
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19 TITLE="SDL_JoystickOpened" |
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20 HREF="sdljoystickopened.html"></HEAD |
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21 ><BODY |
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23 BGCOLOR="#FFF8DC" |
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24 TEXT="#000000" |
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25 LINK="#0000ee" |
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28 ><DIV |
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31 SUMMARY="Header navigation table" |
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35 CELLSPACING="0" |
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36 ><TR |
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37 ><TH |
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38 COLSPAN="3" |
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39 ALIGN="center" |
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40 >SDL Library Documentation</TH |
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41 ></TR |
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42 ><TR |
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43 ><TD |
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44 WIDTH="10%" |
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45 ALIGN="left" |
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46 VALIGN="bottom" |
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47 ><A |
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48 HREF="sdljoystickname.html" |
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49 ACCESSKEY="P" |
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50 >Prev</A |
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51 ></TD |
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52 ><TD |
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53 WIDTH="80%" |
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54 ALIGN="center" |
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55 VALIGN="bottom" |
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56 ></TD |
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57 ><TD |
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58 WIDTH="10%" |
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59 ALIGN="right" |
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60 VALIGN="bottom" |
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61 ><A |
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62 HREF="sdljoystickopened.html" |
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63 ACCESSKEY="N" |
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64 >Next</A |
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65 ></TD |
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66 ></TR |
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67 ></TABLE |
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68 ><HR |
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69 ALIGN="LEFT" |
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70 WIDTH="100%"></DIV |
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71 ><H1 |
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72 ><A |
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73 NAME="SDLJOYSTICKOPEN" |
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74 ></A |
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75 >SDL_JoystickOpen</H1 |
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76 ><DIV |
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77 CLASS="REFNAMEDIV" |
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78 ><A |
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79 NAME="AEN6096" |
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80 ></A |
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81 ><H2 |
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82 >Name</H2 |
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83 >SDL_JoystickOpen -- Opens a joystick for use.</DIV |
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84 ><DIV |
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85 CLASS="REFSYNOPSISDIV" |
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86 ><A |
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87 NAME="AEN6099" |
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88 ></A |
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89 ><H2 |
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90 >Synopsis</H2 |
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91 ><DIV |
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92 CLASS="FUNCSYNOPSIS" |
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93 ><A |
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94 NAME="AEN6100" |
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95 ></A |
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96 ><P |
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97 ></P |
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98 ><PRE |
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99 CLASS="FUNCSYNOPSISINFO" |
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100 >#include "SDL.h"</PRE |
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101 ><P |
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102 ><CODE |
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103 ><CODE |
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104 CLASS="FUNCDEF" |
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105 >SDL_Joystick *<B |
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106 CLASS="FSFUNC" |
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107 >SDL_JoystickOpen</B |
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108 ></CODE |
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109 >(int index);</CODE |
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110 ></P |
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111 ><P |
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112 ></P |
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113 ></DIV |
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114 ></DIV |
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115 ><DIV |
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116 CLASS="REFSECT1" |
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117 ><A |
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118 NAME="AEN6106" |
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119 ></A |
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120 ><H2 |
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121 >Description</H2 |
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122 ><P |
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123 >Opens a joystick for use within SDL. The <TT |
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124 CLASS="PARAMETER" |
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125 ><I |
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126 >index</I |
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127 ></TT |
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128 > refers to the N'th joystick in the system. A joystick must be opened before it game be used.</P |
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129 ></DIV |
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130 ><DIV |
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131 CLASS="REFSECT1" |
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132 ><A |
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133 NAME="AEN6110" |
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134 ></A |
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135 ><H2 |
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136 >Return Value</H2 |
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137 ><P |
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138 >Returns a <SPAN |
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139 CLASS="STRUCTNAME" |
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140 >SDL_Joystick</SPAN |
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141 > structure on success. <SPAN |
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142 CLASS="RETURNVALUE" |
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143 >NULL</SPAN |
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144 > on failure.</P |
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145 ></DIV |
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146 ><DIV |
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147 CLASS="REFSECT1" |
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148 ><A |
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149 NAME="AEN6115" |
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150 ></A |
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151 ><H2 |
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152 >Examples</H2 |
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153 ><P |
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154 ><PRE |
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155 CLASS="PROGRAMLISTING" |
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156 >SDL_Joystick *joy; |
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157 // Check for joystick |
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158 if(SDL_NumJoysticks()>0){ |
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159 // Open joystick |
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160 joy=SDL_JoystickOpen(0); |
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161 |
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162 if(joy) |
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163 { |
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164 printf("Opened Joystick 0\n"); |
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165 printf("Name: %s\n", SDL_JoystickName(0)); |
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166 printf("Number of Axes: %d\n", SDL_JoystickNumAxes(joy)); |
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167 printf("Number of Buttons: %d\n", SDL_JoystickNumButtons(joy)); |
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168 printf("Number of Balls: %d\n", SDL_JoystickNumBalls(joy)); |
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169 } |
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170 else |
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171 printf("Couldn't open Joystick 0\n"); |
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172 |
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173 // Close if opened |
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174 if(SDL_JoystickOpened(0)) |
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175 SDL_JoystickClose(joy); |
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176 }</PRE |
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177 ></P |
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178 ></DIV |
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179 ><DIV |
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180 CLASS="REFSECT1" |
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181 ><A |
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182 NAME="AEN6119" |
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183 ></A |
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184 ><H2 |
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185 >See Also</H2 |
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186 ><P |
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187 ><A |
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188 HREF="sdljoystickclose.html" |
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189 ><TT |
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190 CLASS="FUNCTION" |
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191 >SDL_JoystickClose</TT |
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192 ></A |
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193 ></P |
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194 ></DIV |
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195 ><DIV |
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205 ><TR |
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206 ><TD |
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207 WIDTH="33%" |
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208 ALIGN="left" |
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209 VALIGN="top" |
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210 ><A |
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211 HREF="sdljoystickname.html" |
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212 ACCESSKEY="P" |
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213 >Prev</A |
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214 ></TD |
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215 ><TD |
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216 WIDTH="34%" |
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217 ALIGN="center" |
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218 VALIGN="top" |
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219 ><A |
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220 HREF="index.html" |
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221 ACCESSKEY="H" |
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222 >Home</A |
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224 ><TD |
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226 ALIGN="right" |
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227 VALIGN="top" |
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228 ><A |
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229 HREF="sdljoystickopened.html" |
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230 ACCESSKEY="N" |
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231 >Next</A |
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232 ></TD |
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234 ><TR |
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235 ><TD |
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236 WIDTH="33%" |
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237 ALIGN="left" |
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238 VALIGN="top" |
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239 >SDL_JoystickName</TD |
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240 ><TD |
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241 WIDTH="34%" |
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242 ALIGN="center" |
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243 VALIGN="top" |
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244 ><A |
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245 HREF="joystick.html" |
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246 ACCESSKEY="U" |
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247 >Up</A |
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248 ></TD |
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249 ><TD |
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252 VALIGN="top" |
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253 >SDL_JoystickOpened</TD |
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259 > |