Mercurial > sdl-ios-xcode
view docs/html/sdlactiveevent.html @ 3958:85b6fb6a5e3c SDL-1.2
Actually, this is a better fix...clear the error state once if everything we
need loaded; it's more efficient, and works even if the last unnecessary
xrandr symbol failed to load. Otherwise, leave the original loadso error, so
the end user can find out what symbol failed.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Wed, 13 Jun 2007 08:00:10 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_ActiveEvent</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="SDL Event Structures." HREF="eventstructures.html"><LINK REL="PREVIOUS" TITLE="SDL_Event" HREF="sdlevent.html"><LINK REL="NEXT" TITLE="SDL_KeyboardEvent" HREF="sdlkeyboardevent.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="sdlevent.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlkeyboardevent.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLACTIVEEVENT" ></A >SDL_ActiveEvent</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN3955" ></A ><H2 >Name</H2 >SDL_ActiveEvent -- Application visibility event structure</DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3958" ></A ><H2 >Structure Definition</H2 ><PRE CLASS="PROGRAMLISTING" >typedef struct{ Uint8 type; Uint8 gain; Uint8 state; } SDL_ActiveEvent;</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3961" ></A ><H2 >Structure Data</H2 ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN3963" ></A ><P ></P ><TABLE BORDER="0" CLASS="CALSTABLE" ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >type</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_ACTIVEEVENT.</TT ></TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >gain</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >0 if the event is a loss or 1 if it is a gain.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >state</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_APPMOUSEFOCUS</TT > if mouse focus was gained or lost, <TT CLASS="LITERAL" >SDL_APPINPUTFOCUS</TT > if input focus was gained or lost, or <TT CLASS="LITERAL" >SDL_APPACTIVE</TT > if the application was iconified (<TT CLASS="STRUCTFIELD" ><I >gain</I ></TT >=0) or restored(<TT CLASS="STRUCTFIELD" ><I >gain</I ></TT >=1).</TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3984" ></A ><H2 >Description</H2 ><P ><SPAN CLASS="STRUCTNAME" >SDL_ActiveEvent</SPAN > is a member of the <A HREF="sdlevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_Event</SPAN ></A > union and is used when an event of type <TT CLASS="LITERAL" >SDL_ACTIVEEVENT</TT > is reported.</P ><P >When the mouse leaves or enters the window area a <TT CLASS="LITERAL" >SDL_APPMOUSEFOCUS</TT > type activation event occurs, if the mouse entered the window then <TT CLASS="STRUCTFIELD" ><I >gain</I ></TT > will be 1, otherwise <TT CLASS="STRUCTFIELD" ><I >gain</I ></TT > will be 0. A <TT CLASS="LITERAL" >SDL_APPINPUTFOCUS</TT > type activation event occurs when the application loses or gains keyboard focus. This usually occurs when another application is made active. Finally, a <TT CLASS="LITERAL" >SDL_APPACTIVE</TT > type event occurs when the application is either minimised/iconified (<TT CLASS="STRUCTFIELD" ><I >gain</I ></TT >=0) or restored.</P ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >Note: </B >This event does not occur when an application window is first created.</P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN4000" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_Event</SPAN ></A >, <A HREF="sdlgetappstate.html" ><TT CLASS="FUNCTION" >SDL_GetAppState</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="sdlevent.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="sdlkeyboardevent.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_Event</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="eventstructures.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_KeyboardEvent</TD ></TR ></TABLE ></DIV ></BODY ></HTML >