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sdlpollevent.html
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sdlpollevent.html
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<HTML
><HEAD
><TITLE
>SDL_PollEvent</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
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TITLE="SDL_PeepEvents"
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REL="NEXT"
TITLE="SDL_WaitEvent"
HREF="sdlwaitevent.html"></HEAD
><BODY
CLASS="REFENTRY"
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TEXT="#000000"
LINK="#0000ee"
VLINK="#551a8b"
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><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
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><TH
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>SDL Library Documentation</TH
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><HR
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><H1
><A
NAME="SDLPOLLEVENT"
></A
>SDL_PollEvent</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5472"
></A
><H2
>Name</H2
>SDL_PollEvent -- Polls for currently pending events.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN5475"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN5476"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_PollEvent</B
></CODE
>(SDL_Event *event);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN5482"
></A
><H2
>Description</H2
><P
>Polls for currently pending events, and returns <SPAN
CLASS="RETURNVALUE"
>1</SPAN
>
if there are any pending events, or <SPAN
CLASS="RETURNVALUE"
>0</SPAN
> if there
are none available. </P
><P
>If <TT
CLASS="PARAMETER"
><I
>event</I
></TT
> is not <TT
CLASS="LITERAL"
>NULL</TT
>, the next
event is removed from the queue and stored in that area.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN5490"
></A
><H2
>Examples</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>SDL_Event event; /* Event structure */
.
.
.
/* Check for events */
while(SDL_PollEvent(&event)){ /* Loop until there are no events left on the queue */
switch(event.type){ /* Process the appropiate event type */
case SDL_KEYDOWN: /* Handle a KEYDOWN event */
printf("Oh! Key press\n");
break;
case SDL_MOUSEMOTION:
.
.
.
default: /* Report an unhandled event */
printf("I don't know what this event is!\n");
}
}</PRE
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN5494"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
>,
<A
HREF="sdlwaitevent.html"
><TT
CLASS="FUNCTION"
>SDL_WaitEvent</TT
></A
>,
<A
HREF="sdlpeepevents.html"
><TT
CLASS="FUNCTION"
>SDL_PeepEvents</TT
></A
></P
></DIV
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><HR
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><A
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>Prev</A
></TD
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>Home</A
></TD
><TD
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><A
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></TD
></TR
><TR
><TD
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>SDL_PeepEvents</TD
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><A
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>Up</A
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>