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view docs/html/sdlpumpevents.html @ 1550:31c2b8e4885e
Fixed bug #166
From the autoconf obsolete macros documentation:
Macro: AC_CANONICAL_SYSTEM
Determine the system type and set output variables to the names of the canonical system types. See section Getting the Canonical System Type, for details about the variables this macro sets.
The user is encouraged to use either AC_CANONICAL_BUILD, or AC_CANONICAL_HOST, or AC_CANONICAL_TARGET, depending on the needs. Using AC_CANONICAL_TARGET is enough to run the two other macros.
From the documentation for the canonical environments:
case $target in
i386-*-mach* | i386-*-gnu*)
obj_format=aout emulation=mach bfd_gas=yes ;;
i960-*-bout) obj_format=bout ;;
esac
Note that the above example uses $target because it's taken from a tool which can be built on some architecture ($build), run on another ($host), but yet handle data for a third architecture ($target). Such tools are usually part of a compiler suite, they generate code for a specific $target.
However $target should be meaningless for most packages. If you want to base a decision on the system where your program will be run, make sure you use the $host variable.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 Mar 2006 05:27:22 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_PumpEvents</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Event Functions." HREF="eventfunctions.html"><LINK REL="PREVIOUS" TITLE="Event Functions." HREF="eventfunctions.html"><LINK REL="NEXT" TITLE="SDL_PeepEvents" HREF="sdlpeepevents.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="eventfunctions.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlpeepevents.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLPUMPEVENTS" ></A >SDL_PumpEvents</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN5387" ></A ><H2 >Name</H2 >SDL_PumpEvents -- Pumps the event loop, gathering events from the input devices.</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN5390" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN5391" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >void <B CLASS="FSFUNC" >SDL_PumpEvents</B ></CODE >(void);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5397" ></A ><H2 >Description</H2 ><P >Pumps the event loop, gathering events from the input devices.</P ><P ><TT CLASS="FUNCTION" >SDL_PumpEvents</TT > gathers all the pending input information from devices and places it on the event queue. Without calls to <TT CLASS="FUNCTION" >SDL_PumpEvents</TT > no events would ever be placed on the queue. Often calls the need for <TT CLASS="FUNCTION" >SDL_PumpEvents</TT > is hidden from the user since <A HREF="sdlpollevent.html" ><TT CLASS="FUNCTION" >SDL_PollEvent</TT ></A > and <A HREF="sdlwaitevent.html" ><TT CLASS="FUNCTION" >SDL_WaitEvent</TT ></A > implicitly call <TT CLASS="FUNCTION" >SDL_PumpEvents</TT >. However, if you are not polling or waiting for events (e.g. you are filtering them), then you must call <TT CLASS="FUNCTION" >SDL_PumpEvents</TT > to force an event queue update.</P ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >Note: </B >You can only call this function in the thread that set the video mode.</P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5412" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlpollevent.html" ><TT CLASS="FUNCTION" >SDL_PollEvent</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="eventfunctions.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlpeepevents.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Event Functions.</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="eventfunctions.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_PeepEvents</TD ></TR ></TABLE ></DIV ></BODY ></HTML >