1 <HTML 2 ><HEAD 3 ><TITLE 4 >SDL_QuitEvent</TITLE 5 ><META 6 NAME="GENERATOR" 7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ 8 "><LINK 9 REL="HOME" 10 TITLE="SDL Library Documentation" 11 HREF="index.html"><LINK 12 REL="UP" 13 TITLE="SDL Event Structures." 14 HREF="eventstructures.html"><LINK 15 REL="PREVIOUS" 16 TITLE="SDL_UserEvent" 17 HREF="sdluserevent.html"><LINK 18 REL="NEXT" 19 TITLE="SDL_keysym" 20 HREF="sdlkeysym.html"></HEAD 21 ><BODY 22 CLASS="REFENTRY" 23 BGCOLOR="#FFF8DC" 24 TEXT="#000000" 25 LINK="#0000ee" 26 VLINK="#551a8b" 27 ALINK="#ff0000" 28 ><DIV 29 CLASS="NAVHEADER" 30 ><TABLE 31 SUMMARY="Header navigation table" 32 WIDTH="100%" 33 BORDER="0" 34 CELLPADDING="0" 35 CELLSPACING="0" 36 ><TR 37 ><TH 38 COLSPAN="3" 39 ALIGN="center" 40 >SDL Library Documentation</TH 41 ></TR 42 ><TR 43 ><TD 44 WIDTH="10%" 45 ALIGN="left" 46 VALIGN="bottom" 47 ><A 48 HREF="sdluserevent.html" 49 ACCESSKEY="P" 50 >Prev</A 51 ></TD 52 ><TD 53 WIDTH="80%" 54 ALIGN="center" 55 VALIGN="bottom" 56 ></TD 57 ><TD 58 WIDTH="10%" 59 ALIGN="right" 60 VALIGN="bottom" 61 ><A 62 HREF="sdlkeysym.html" 63 ACCESSKEY="N" 64 >Next</A 65 ></TD 66 ></TR 67 ></TABLE 68 ><HR 69 ALIGN="LEFT" 70 WIDTH="100%"></DIV 71 ><H1 72 ><A 73 NAME="SDLQUITEVENT" 74 ></A 75 >SDL_QuitEvent</H1 76 ><DIV 77 CLASS="REFNAMEDIV" 78 ><A 79 NAME="AEN4621" 80 ></A 81 ><H2 82 >Name</H2 83 >SDL_QuitEvent -- Quit requested event</DIV 84 ><DIV 85 CLASS="REFSECT1" 86 ><A 87 NAME="AEN4624" 88 ></A 89 ><H2 90 >Structure Definition</H2 91 ><PRE 92 CLASS="PROGRAMLISTING" 93 >typedef struct{ 94 Uint8 type 95 } SDL_QuitEvent;</PRE 96 ></DIV 97 ><DIV 98 CLASS="REFSECT1" 99 ><A 100 NAME="AEN4627" 101 ></A 102 ><H2 103 >Structure Data</H2 104 ><DIV 105 CLASS="INFORMALTABLE" 106 ><A 107 NAME="AEN4629" 108 ></A 109 ><P 110 ></P 111 ><TABLE 112 BORDER="0" 113 CLASS="CALSTABLE" 114 ><TBODY 115 ><TR 116 ><TD 117 ALIGN="LEFT" 118 VALIGN="TOP" 119 ><TT 120 CLASS="STRUCTFIELD" 121 ><I 122 >type</I 123 ></TT 124 ></TD 125 ><TD 126 ALIGN="LEFT" 127 VALIGN="TOP" 128 ><TT 129 CLASS="LITERAL" 130 >SDL_QUIT</TT 131 ></TD 132 ></TR 133 ></TBODY 134 ></TABLE 135 ><P 136 ></P 137 ></DIV 138 ></DIV 139 ><DIV 140 CLASS="REFSECT1" 141 ><A 142 NAME="AEN4637" 143 ></A 144 ><H2 145 >Description</H2 146 ><P 147 ><SPAN 148 CLASS="STRUCTNAME" 149 >SDL_QuitEvent</SPAN 150 > is a member of the <A 151 HREF="sdlevent.html" 152 ><SPAN 153 CLASS="STRUCTNAME" 154 >SDL_Event</SPAN 155 ></A 156 > union and is used whan an event of type <TT 157 CLASS="LITERAL" 158 >SDL_QUIT</TT 159 > is reported.</P 160 ><P 161 >As can be seen, the SDL_QuitEvent structure serves no useful purpose. The event itself, on the other hand, is very important. If you filter out or ignore a quit event then it is impossible for the user to close the window. On the other hand, if you do accept a quit event then the application window will be closed, and screen updates will still report success event though the application will no longer be visible.</P 162 ><DIV 163 CLASS="NOTE" 164 ><BLOCKQUOTE 165 CLASS="NOTE" 166 ><P 167 ><B 168 >Note: </B 169 >The macro <TT 170 CLASS="FUNCTION" 171 >SDL_QuitRequested</TT 172 > will return non-zero if a quit event is pending</P 173 ></BLOCKQUOTE 174 ></DIV 175 ></DIV 176 ><DIV 177 CLASS="REFSECT1" 178 ><A 179 NAME="AEN4648" 180 ></A 181 ><H2 182 >See Also</H2 183 ><P 184 ><A 185 HREF="sdlevent.html" 186 ><SPAN 187 CLASS="STRUCTNAME" 188 >SDL_Event</SPAN 189 ></A 190 >, 191 <A 192 HREF="sdlseteventfilter.html" 193 ><TT 194 CLASS="FUNCTION" 195 >SDL_SetEventFilter</TT 196 ></A 197 ></P 198 ></DIV 199 ><DIV 200 CLASS="NAVFOOTER" 201 ><HR 202 ALIGN="LEFT" 203 WIDTH="100%"><TABLE 204 SUMMARY="Footer navigation table" 205 WIDTH="100%" 206 BORDER="0" 207 CELLPADDING="0" 208 CELLSPACING="0" 209 ><TR 210 ><TD 211 WIDTH="33%" 212 ALIGN="left" 213 VALIGN="top" 214 ><A 215 HREF="sdluserevent.html" 216 ACCESSKEY="P" 217 >Prev</A 218 ></TD 219 ><TD 220 WIDTH="34%" 221 ALIGN="center" 222 VALIGN="top" 223 ><A 224 HREF="index.html" 225 ACCESSKEY="H" 226 >Home</A 227 ></TD 228 ><TD 229 WIDTH="33%" 230 ALIGN="right" 231 VALIGN="top" 232 ><A 233 HREF="sdlkeysym.html" 234 ACCESSKEY="N" 235 >Next</A 236 ></TD 237 ></TR 238 ><TR 239 ><TD 240 WIDTH="33%" 241 ALIGN="left" 242 VALIGN="top" 243 >SDL_UserEvent</TD 244 ><TD 245 WIDTH="34%" 246 ALIGN="center" 247 VALIGN="top" 248 ><A 249 HREF="eventstructures.html" 250 ACCESSKEY="U" 251 >Up</A 252 ></TD 253 ><TD 254 WIDTH="33%" 255 ALIGN="right" 256 VALIGN="top" 257 >SDL_keysym</TD 258 ></TR 259 ></TABLE 260 ></DIV 261 ></BODY 262 ></HTML 263 >