view docs/html/sdlpollevent.html @ 4006:2c66ac13144f SDL-1.2

Fixed bug #436 The install-lib target should depend on the libraries that are built.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 05 Jul 2007 06:34:51 +0000
parents 355632dca928
children
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>SDL_PollEvent</H1
><DIV
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><A
NAME="AEN5472"
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><H2
>Name</H2
>SDL_PollEvent&nbsp;--&nbsp;Polls for currently pending events.</DIV
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>Synopsis</H2
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_PollEvent</B
></CODE
>(SDL_Event *event);</CODE
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><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
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>Examples</H2
><P
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CLASS="PROGRAMLISTING"
>SDL_Event event; /* Event structure */

.
.
.
/* Check for events */
while(SDL_PollEvent(&#38;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
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>SDL_Event</SPAN
></A
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><TT
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>SDL_WaitEvent</TT
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><TT
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>SDL_PeepEvents</TT
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