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><H1
><A
NAME="SDLPEEPEVENTS"
>SDL_PeepEvents</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5037"
></A
><H2
>Name</H2
>SDL_PeepEvents&nbsp;--&nbsp;Checks the event queue for messages and optionally returns them.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN5040"
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><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_PeepEvents</B
></CODE
>(SDL_Event *events, int numevents, SDL_eventaction action, Uint32 mask);</CODE
></P
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CLASS="REFSECT1"
><A
NAME="AEN5047"
></A
><H2
>Description</H2
><P
>Checks the event queue for messages and optionally returns them.</P
><P
>If <TT
CLASS="PARAMETER"
><I
>action</I
></TT
> is <TT
CLASS="LITERAL"
>SDL_ADDEVENT</TT
>, up to
<TT
CLASS="PARAMETER"
><I
>numevents</I
></TT
> events will be added to the back of the event
 queue.</P
><P
>If <TT
CLASS="PARAMETER"
><I
>action</I
></TT
> is <TT
CLASS="LITERAL"
>SDL_PEEKEVENT</TT
>, up to
<TT
CLASS="PARAMETER"
><I
>numevents</I
></TT
> events at the front of the event queue,
matching <A
HREF="sdlevent.html"
><TT
CLASS="PARAMETER"
><I
>mask</I
></TT
></A
>,
will be returned and will not be removed from the queue.</P
><P
>If <TT
CLASS="PARAMETER"
><I
>action</I
></TT
> is <TT
CLASS="LITERAL"
>SDL_GETEVENT</TT
>, up to
<TT
CLASS="PARAMETER"
><I
>numevents</I
></TT
> events at the front of the event queue,
matching <A
HREF="sdlevent.html"
><TT
CLASS="PARAMETER"
><I
>mask</I
></TT
></A
>,
will be returned and will be removed from the queue.</P
><P
>This function is thread-safe.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN5067"
></A
><H2
>Return Value</H2
><P
>This function returns the number of events actually stored, or
<SPAN
CLASS="RETURNVALUE"
>-1</SPAN
> if there was an error.  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN5071"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
>,
<A
HREF="sdlpollevent.html"
><TT
CLASS="FUNCTION"
>SDL_PollEvent</TT
></A
>,
<A
HREF="sdlpushevent.html"
><TT
CLASS="FUNCTION"
>SDL_PushEvent</TT
></A
></P
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author	Sam Lantinga <slouken@libsdl.org>
date	Tue, 09 Apr 2002 23:49:06 +0000
parents	e5bc29de3f0a
children	355632dca928