1 <HTML 2 ><HEAD 3 ><TITLE 4 >SDL_PumpEvents</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="Event Functions." 14 HREF="eventfunctions.html"><LINK 15 REL="PREVIOUS" 16 TITLE="Event Functions." 17 HREF="eventfunctions.html"><LINK 18 REL="NEXT" 19 TITLE="SDL_PeepEvents" 20 HREF="sdlpeepevents.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="eventfunctions.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="sdlpeepevents.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="SDLPUMPEVENTS" 74 ></A 75 >SDL_PumpEvents</H1 76 ><DIV 77 CLASS="REFNAMEDIV" 78 ><A 79 NAME="AEN5387" 80 ></A 81 ><H2 82 >Name</H2 83 >SDL_PumpEvents -- Pumps the event loop, gathering events from the input devices.</DIV 84 ><DIV 85 CLASS="REFSYNOPSISDIV" 86 ><A 87 NAME="AEN5390" 88 ></A 89 ><H2 90 >Synopsis</H2 91 ><DIV 92 CLASS="FUNCSYNOPSIS" 93 ><A 94 NAME="AEN5391" 95 ></A 96 ><P 97 ></P 98 ><PRE 99 CLASS="FUNCSYNOPSISINFO" 100 >#include "SDL.h"</PRE 101 ><P 102 ><CODE 103 ><CODE 104 CLASS="FUNCDEF" 105 >void <B 106 CLASS="FSFUNC" 107 >SDL_PumpEvents</B 108 ></CODE 109 >(void);</CODE 110 ></P 111 ><P 112 ></P 113 ></DIV 114 ></DIV 115 ><DIV 116 CLASS="REFSECT1" 117 ><A 118 NAME="AEN5397" 119 ></A 120 ><H2 121 >Description</H2 122 ><P 123 >Pumps the event loop, gathering events from the input devices.</P 124 ><P 125 ><TT 126 CLASS="FUNCTION" 127 >SDL_PumpEvents</TT 128 > gathers all the pending input information from devices and places it on the event queue. Without calls to <TT 129 CLASS="FUNCTION" 130 >SDL_PumpEvents</TT 131 > no events would ever be placed on the queue. Often calls the need for <TT 132 CLASS="FUNCTION" 133 >SDL_PumpEvents</TT 134 > is hidden from the user since <A 135 HREF="sdlpollevent.html" 136 ><TT 137 CLASS="FUNCTION" 138 >SDL_PollEvent</TT 139 ></A 140 > and <A 141 HREF="sdlwaitevent.html" 142 ><TT 143 CLASS="FUNCTION" 144 >SDL_WaitEvent</TT 145 ></A 146 > implicitly call <TT 147 CLASS="FUNCTION" 148 >SDL_PumpEvents</TT 149 >. However, if you are not polling or waiting for events (e.g. you are filtering them), then you must call <TT 150 CLASS="FUNCTION" 151 >SDL_PumpEvents</TT 152 > to force an event queue update.</P 153 ><DIV 154 CLASS="NOTE" 155 ><BLOCKQUOTE 156 CLASS="NOTE" 157 ><P 158 ><B 159 >Note: </B 160 >You can only call this function in the thread that set the video mode.</P 161 ></BLOCKQUOTE 162 ></DIV 163 ></DIV 164 ><DIV 165 CLASS="REFSECT1" 166 ><A 167 NAME="AEN5412" 168 ></A 169 ><H2 170 >See Also</H2 171 ><P 172 ><A 173 HREF="sdlpollevent.html" 174 ><TT 175 CLASS="FUNCTION" 176 >SDL_PollEvent</TT 177 ></A 178 ></P 179 ></DIV 180 ><DIV 181 CLASS="NAVFOOTER" 182 ><HR 183 ALIGN="LEFT" 184 WIDTH="100%"><TABLE 185 SUMMARY="Footer navigation table" 186 WIDTH="100%" 187 BORDER="0" 188 CELLPADDING="0" 189 CELLSPACING="0" 190 ><TR 191 ><TD 192 WIDTH="33%" 193 ALIGN="left" 194 VALIGN="top" 195 ><A 196 HREF="eventfunctions.html" 197 ACCESSKEY="P" 198 >Prev</A 199 ></TD 200 ><TD 201 WIDTH="34%" 202 ALIGN="center" 203 VALIGN="top" 204 ><A 205 HREF="index.html" 206 ACCESSKEY="H" 207 >Home</A 208 ></TD 209 ><TD 210 WIDTH="33%" 211 ALIGN="right" 212 VALIGN="top" 213 ><A 214 HREF="sdlpeepevents.html" 215 ACCESSKEY="N" 216 >Next</A 217 ></TD 218 ></TR 219 ><TR 220 ><TD 221 WIDTH="33%" 222 ALIGN="left" 223 VALIGN="top" 224 >Event Functions.</TD 225 ><TD 226 WIDTH="34%" 227 ALIGN="center" 228 VALIGN="top" 229 ><A 230 HREF="eventfunctions.html" 231 ACCESSKEY="U" 232 >Up</A 233 ></TD 234 ><TD 235 WIDTH="33%" 236 ALIGN="right" 237 VALIGN="top" 238 >SDL_PeepEvents</TD 239 ></TR 240 ></TABLE 241 ></DIV 242 ></BODY 243 ></HTML 244 >