Mercurial > sdl-ios-xcode
view docs/html/sdlpeepevents.html @ 1013:a649064a3215
Date: Tue, 14 Dec 2004 12:08:30 +0100
From: Marcin Konicki
Subject: Re: [SDL] SDL 1.2.8 Prerelease
I'm sending small fix for BeOS, which prevents filling up SDL's message
queue too fast.
Without it, SDL receives "key down" messages from BeOS code, for each key
repeat (BeOS handles key repeats itself, and application can check if
received "key down" message from BeOS is first time key down, or if it's
repeat, and which repeat it is). Since there is no way for "sdl driver" to
turn off "default" SDL's key-repeat mechanism, they were working both at
the same time (and queue could be filled up very fast).
So this patch removes handling "key down" message from BeOS if it's
key_repeat "type".
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 14 Dec 2004 18:23:27 +0000 |
parents | 355632dca928 |
children |
line wrap: on
line source
<HTML ><HEAD ><TITLE >SDL_PeepEvents</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="SDL_PumpEvents" HREF="sdlpumpevents.html"><LINK REL="NEXT" TITLE="SDL_PollEvent" HREF="sdlpollevent.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="sdlpumpevents.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlpollevent.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLPEEPEVENTS" ></A >SDL_PeepEvents</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN5421" ></A ><H2 >Name</H2 >SDL_PeepEvents -- Checks the event queue for messages and optionally returns them.</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN5424" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN5425" ></A ><P ></P ><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 ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5431" ></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 >The <TT CLASS="PARAMETER" ><I >mask</I ></TT > parameter is an bitwise OR of <TT CLASS="LITERAL" >SDL_EVENTMASK</TT >(<TT CLASS="PARAMETER" ><I >event_type</I ></TT >), for all event types you are interested in.</P ><P >This function is thread-safe.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5455" ></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="AEN5459" ></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 ></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="sdlpumpevents.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="sdlpollevent.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_PumpEvents</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_PollEvent</TD ></TR ></TABLE ></DIV ></BODY ></HTML >