annotate docs/html/sdluserevent.html @ 370:ba72f259bc88

Date: Sat, 18 May 2002 17:40:53 +0300 From: Mike Gorchak <mike@malva.ua> Subject: New QNX patches - Added more error check to avoid SEGFAULTS; - Fixed bug in update function for SDL_HWSURFACE. BTW: update is much faster than before. - Added checks for SDL_HWSURFACE flag, chosen bpp must be equal to desktop bpp for SDL_HWSURFACE. - Fixed overlay bug, no more SEGFAULTS.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 May 2002 19:54:01 +0000
parents e5bc29de3f0a
children 355632dca928
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1 <HTML
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3 ><TITLE
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4 >SDL_UserEvent</TITLE
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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="SDL Event Structures."
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14 HREF="eventstructures.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_SysWMEvent"
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17 HREF="sdlsyswmevent.html"><LINK
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19 TITLE="SDL_QuitEvent"
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20 HREF="sdlquitevent.html"></HEAD
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21 ><BODY
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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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31 WIDTH="100%"
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32 BORDER="0"
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33 CELLPADDING="0"
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34 CELLSPACING="0"
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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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45 VALIGN="bottom"
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46 ><A
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47 HREF="sdlsyswmevent.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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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="sdlquitevent.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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67 WIDTH="100%"></DIV
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68 ><H1
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69 ><A
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70 NAME="SDLUSEREVENT"
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71 >SDL_UserEvent</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="AEN4181"
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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_UserEvent&nbsp;--&nbsp;A user-defined event type</DIV
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81 ><DIV
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82 CLASS="REFSECT1"
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83 ><A
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84 NAME="AEN4184"
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85 ></A
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86 ><H2
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87 >Structure Definition</H2
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88 ><PRE
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89 CLASS="PROGRAMLISTING"
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90 >typedef struct{
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91 Uint8 type;
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92 int code;
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93 void *data1;
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94 void *data2;
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95 } SDL_UserEvent;</PRE
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96 ></DIV
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97 ><DIV
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98 CLASS="REFSECT1"
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99 ><A
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100 NAME="AEN4187"
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101 ></A
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102 ><H2
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103 >Structure Data</H2
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104 ><DIV
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105 CLASS="INFORMALTABLE"
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106 ><A
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107 NAME="AEN4189"
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108 ></A
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109 ><P
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110 ></P
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111 ><TABLE
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112 BORDER="0"
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113 CLASS="CALSTABLE"
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114 ><TBODY
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115 ><TR
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116 ><TD
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117 ALIGN="LEFT"
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118 VALIGN="TOP"
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119 ><TT
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120 CLASS="STRUCTFIELD"
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121 ><I
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122 >type</I
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123 ></TT
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124 ></TD
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125 ><TD
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126 ALIGN="LEFT"
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128 ><TT
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129 CLASS="LITERAL"
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130 >SDL_USEREVENT</TT
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131 > through to <TT
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132 CLASS="LITERAL"
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133 >SDL_NUMEVENTS-1</TT
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134 ></TD
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135 ></TR
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136 ><TR
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137 ><TD
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138 ALIGN="LEFT"
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139 VALIGN="TOP"
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140 ><TT
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141 CLASS="STRUCTFIELD"
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142 ><I
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143 >code</I
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144 ></TT
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145 ></TD
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146 ><TD
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147 ALIGN="LEFT"
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148 VALIGN="TOP"
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149 >User defined event code</TD
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150 ></TR
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151 ><TR
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152 ><TD
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153 ALIGN="LEFT"
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154 VALIGN="TOP"
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155 ><TT
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156 CLASS="STRUCTFIELD"
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157 ><I
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158 >data1</I
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159 ></TT
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160 ></TD
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161 ><TD
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162 ALIGN="LEFT"
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163 VALIGN="TOP"
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164 >User defined data pointer</TD
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165 ></TR
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166 ><TR
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167 ><TD
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168 ALIGN="LEFT"
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169 VALIGN="TOP"
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170 ><TT
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171 CLASS="STRUCTFIELD"
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172 ><I
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173 >data2</I
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174 ></TT
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175 ></TD
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176 ><TD
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177 ALIGN="LEFT"
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178 VALIGN="TOP"
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179 >User defined data pointer</TD
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180 ></TR
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181 ></TBODY
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182 ></TABLE
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183 ><P
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184 ></P
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185 ></DIV
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186 ></DIV
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187 ><DIV
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188 CLASS="REFSECT1"
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189 ><A
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190 NAME="AEN4210"
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191 ></A
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192 ><H2
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193 >Description</H2
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194 ><P
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195 ><SPAN
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196 CLASS="STRUCTNAME"
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197 >SDL_UserEvent</SPAN
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198 > is in the <TT
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199 CLASS="STRUCTFIELD"
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200 ><I
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201 >user</I
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202 ></TT
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203 > member of the structure <A
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204 HREF="sdlevent.html"
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205 ><SPAN
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206 CLASS="STRUCTNAME"
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207 >SDL_Event</SPAN
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208 ></A
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209 >. This event is unique, it is never created by SDL but only by the user. The event can be pushed onto the event queue using <A
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210 HREF="sdlpushevent.html"
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211 ><TT
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212 CLASS="FUNCTION"
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213 >SDL_PushEvent</TT
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214 ></A
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215 >. The contents of the structure members or completely up to the programmer, the only requirement is that <TT
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216 CLASS="STRUCTFIELD"
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217 ><I
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218 >type</I
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219 ></TT
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220 > is a value from <TT
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221 CLASS="LITERAL"
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222 >SDL_USEREVENT</TT
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223 > to <TT
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224 CLASS="LITERAL"
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225 >SDL_NUMEVENTS-1</TT
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226 > (inclusive).</P
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227 ></DIV
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228 ><DIV
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229 CLASS="REFSECT1"
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230 ><A
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231 NAME="AEN4222"
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232 ></A
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233 ><H2
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234 >Examples</H2
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235 ><P
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236 ><PRE
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237 CLASS="PROGRAMLISTING"
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238 >SDL_Event event;
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239
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240 event.type = SDL_USEREVENT;
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241 event.user.code = my_event_code;
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242 event.user.data1 = significant_data;
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243 event.user.data2 = 0;
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244 SDL_PushEvent(&#38;event);</PRE
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245 ></P
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246 ></DIV
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247 ><DIV
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248 CLASS="REFSECT1"
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249 ><A
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250 NAME="AEN4226"
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251 ></A
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252 ><H2
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253 >See Also</H2
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254 ><P
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255 ><A
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256 HREF="sdlevent.html"
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257 ><SPAN
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258 CLASS="STRUCTNAME"
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259 >SDL_Event</SPAN
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260 ></A
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261 >,
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262 <A
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263 HREF="sdlpushevent.html"
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264 ><TT
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265 CLASS="FUNCTION"
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266 >SDL_PushEvent</TT
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267 ></A
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268 ></P
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269 ></DIV
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270 ><DIV
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271 CLASS="NAVFOOTER"
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272 ><HR
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273 ALIGN="LEFT"
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274 WIDTH="100%"><TABLE
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275 WIDTH="100%"
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276 BORDER="0"
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277 CELLPADDING="0"
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278 CELLSPACING="0"
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279 ><TR
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280 ><TD
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281 WIDTH="33%"
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282 ALIGN="left"
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283 VALIGN="top"
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284 ><A
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285 HREF="sdlsyswmevent.html"
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286 >Prev</A
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287 ></TD
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288 ><TD
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289 WIDTH="34%"
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290 ALIGN="center"
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291 VALIGN="top"
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292 ><A
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293 HREF="index.html"
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294 >Home</A
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295 ></TD
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296 ><TD
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297 WIDTH="33%"
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298 ALIGN="right"
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299 VALIGN="top"
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300 ><A
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301 HREF="sdlquitevent.html"
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302 >Next</A
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303 ></TD
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304 ></TR
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305 ><TR
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306 ><TD
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307 WIDTH="33%"
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308 ALIGN="left"
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309 VALIGN="top"
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310 >SDL_SysWMEvent</TD
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311 ><TD
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312 WIDTH="34%"
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313 ALIGN="center"
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314 VALIGN="top"
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315 ><A
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316 HREF="eventstructures.html"
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317 >Up</A
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318 ></TD
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319 ><TD
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320 WIDTH="33%"
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321 ALIGN="right"
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322 VALIGN="top"
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323 >SDL_QuitEvent</TD
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324 ></TR
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325 ></TABLE
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326 ></DIV
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327 ></BODY
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328 ></HTML
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329 >