annotate docs/html/sdlcdstatus.html @ 537:77b05010bb33

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author Sam Lantinga <slouken@libsdl.org>
date Sat, 09 Nov 2002 05:51:13 +0000
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children 355632dca928
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1 <HTML
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2 ><HEAD
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3 ><TITLE
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4 >SDL_CDStatus</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 1.64
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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="CD-ROM"
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14 HREF="cdrom.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_CDOpen"
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17 HREF="sdlcdopen.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_CDPlay"
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20 HREF="sdlcdplay.html"></HEAD
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27 ALINK="#ff0000"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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35 ><TR
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36 ><TH
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37 COLSPAN="3"
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38 ALIGN="center"
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39 >SDL Library Documentation</TH
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40 ></TR
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41 ><TR
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42 ><TD
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43 WIDTH="10%"
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44 ALIGN="left"
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45 VALIGN="bottom"
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46 ><A
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47 HREF="sdlcdopen.html"
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48 >Prev</A
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49 ></TD
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50 ><TD
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51 WIDTH="80%"
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52 ALIGN="center"
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53 VALIGN="bottom"
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54 ></TD
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55 ><TD
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56 WIDTH="10%"
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57 ALIGN="right"
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58 VALIGN="bottom"
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59 ><A
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60 HREF="sdlcdplay.html"
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61 >Next</A
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62 ></TD
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63 ></TR
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64 ></TABLE
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65 ><HR
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66 ALIGN="LEFT"
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67 WIDTH="100%"></DIV
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68 ><H1
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69 ><A
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70 NAME="SDLCDSTATUS"
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71 >SDL_CDStatus</A
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72 ></H1
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73 ><DIV
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74 CLASS="REFNAMEDIV"
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75 ><A
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76 NAME="AEN6920"
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77 ></A
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78 ><H2
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79 >Name</H2
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80 >SDL_CDStatus&nbsp;--&nbsp;Returns the current status of the given drive.</DIV
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81 ><DIV
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82 CLASS="REFSYNOPSISDIV"
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83 ><A
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84 NAME="AEN6923"
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85 ></A
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86 ><H2
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87 >Synopsis</H2
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88 ><DIV
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89 CLASS="FUNCSYNOPSIS"
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90 ><A
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91 NAME="AEN6924"
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92 ></A
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93 ><P
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94 ></P
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95 ><PRE
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96 CLASS="FUNCSYNOPSISINFO"
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97 >#include "SDL.h"</PRE
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98 ><P
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99 ><CODE
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100 ><CODE
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101 CLASS="FUNCDEF"
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102 >CDstatus <B
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103 CLASS="FSFUNC"
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104 >SDL_CDStatus</B
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105 ></CODE
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106 >(SDL_CD *cdrom);</CODE
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107 ></P
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108 ><PRE
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109 CLASS="FUNCSYNOPSISINFO"
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110 >/* Given a status, returns true if there's a disk in the drive */
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111 #define CD_INDRIVE(status) ((int)status &#62; 0)</PRE
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112 ><P
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113 ></P
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114 ></DIV
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115 ></DIV
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116 ><DIV
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117 CLASS="REFSECT1"
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118 ><A
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119 NAME="AEN6931"
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120 ></A
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121 ><H2
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122 >Description</H2
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123 ><P
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124 >This function returns the current status of the given drive. Status is described like so:
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125 <PRE
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126 CLASS="PROGRAMLISTING"
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127 >typedef enum {
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128 CD_TRAYEMPTY,
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129 CD_STOPPED,
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130 CD_PLAYING,
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131 CD_PAUSED,
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132 CD_ERROR = -1
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133 } CDstatus;</PRE
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134 ></P
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135 ><P
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136 >If the drive has a CD in it, the table of contents of the CD and current
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137 play position of the CD will be stored in the SDL_CD structure.</P
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138 ><P
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139 >The macro <TT
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140 CLASS="LITERAL"
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141 >CD_INDRIVE</TT
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142 > is provided for convenience,
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143 and given a status returns true if there's a disk in the drive.</P
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144 ><DIV
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145 CLASS="NOTE"
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146 ><BLOCKQUOTE
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147 CLASS="NOTE"
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148 ><P
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149 ><B
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150 >Note: </B
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151 ><TT
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152 CLASS="FUNCTION"
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153 >SDL_CDStatus</TT
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154 > also updates the <A
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155 HREF="sdlcd.html"
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156 ><SPAN
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157 CLASS="STRUCTNAME"
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158 >SDL_CD</SPAN
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159 ></A
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160 > structure passed to it.</P
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161 ></BLOCKQUOTE
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162 ></DIV
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163 ></DIV
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164 ><DIV
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165 CLASS="REFSECT1"
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166 ><A
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167 NAME="AEN6943"
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168 ></A
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169 ><H2
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170 >Example</H2
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171 ><PRE
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172 CLASS="PROGRAMLISTING"
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173 >int playTrack(int track)
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174 {
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175 int playing = 0;
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176
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177 if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
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178 /* clamp to the actual number of tracks on the CD */
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179 if (track &#62;= cdrom-&#62;numtracks) {
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180 track = cdrom-&#62;numtracks-1;
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181 }
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182
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183 if ( SDL_CDPlayTracks(cdrom, track, 0, 1, 0) == 0 ) {
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184 playing = 1;
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185 }
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186 }
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187 return playing;
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188 }</PRE
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189 ></DIV
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190 ><DIV
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191 CLASS="REFSECT1"
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192 ><A
181
e5bc29de3f0a Updated from the SDL Documentation Project
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193 NAME="AEN6946"
0
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194 ></A
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195 ><H2
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196 >See Also</H2
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197 ><P
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198 ><A
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199 HREF="sdlcd.html"
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200 ><TT
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201 CLASS="FUNCTION"
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202 >SDL_CD</TT
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203 ></A
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204 ></P
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205 ></DIV
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206 ><DIV
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207 CLASS="NAVFOOTER"
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208 ><HR
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209 ALIGN="LEFT"
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210 WIDTH="100%"><TABLE
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211 WIDTH="100%"
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212 BORDER="0"
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213 CELLPADDING="0"
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214 CELLSPACING="0"
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215 ><TR
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216 ><TD
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217 WIDTH="33%"
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218 ALIGN="left"
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219 VALIGN="top"
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220 ><A
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221 HREF="sdlcdopen.html"
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222 >Prev</A
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223 ></TD
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224 ><TD
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225 WIDTH="34%"
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226 ALIGN="center"
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227 VALIGN="top"
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228 ><A
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229 HREF="index.html"
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230 >Home</A
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231 ></TD
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232 ><TD
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233 WIDTH="33%"
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234 ALIGN="right"
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235 VALIGN="top"
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236 ><A
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237 HREF="sdlcdplay.html"
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238 >Next</A
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239 ></TD
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240 ></TR
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241 ><TR
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242 ><TD
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243 WIDTH="33%"
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244 ALIGN="left"
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245 VALIGN="top"
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246 >SDL_CDOpen</TD
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247 ><TD
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248 WIDTH="34%"
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249 ALIGN="center"
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250 VALIGN="top"
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251 ><A
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252 HREF="cdrom.html"
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253 >Up</A
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254 ></TD
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255 ><TD
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256 WIDTH="33%"
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257 ALIGN="right"
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258 VALIGN="top"
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259 >SDL_CDPlay</TD
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260 ></TR
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261 ></TABLE
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262 ></DIV
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263 ></BODY
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264 ></HTML
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265 >