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><H1
><A
NAME="SDLACTIVEEVENT"
>SDL_ActiveEvent</A
></H1
><DIV
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><A
NAME="AEN3571"
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><H2
>Name</H2
>SDL_ActiveEvent&nbsp;--&nbsp;Application visibility event structure</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3574"
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><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint8 type;
  Uint8 gain;
  Uint8 state;
} SDL_ActiveEvent;</PRE
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><H2
>Structure Data</H2
><DIV
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><TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
></TD
><TD
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VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_ACTIVEEVENT.</TT
></TD
></TR
><TR
><TD
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><TT
CLASS="STRUCTFIELD"
><I
>gain</I
></TT
></TD
><TD
ALIGN="LEFT"
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>0 if the event is a loss or 1 if it is a gain.</TD
></TR
><TR
><TD
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><TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
></TD
><TD
ALIGN="LEFT"
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><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
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><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
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><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>This event does not occur when an application window is first created.</P
></BLOCKQUOTE
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><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
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author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 09 Nov 2002 05:51:13 +0000
parents	e5bc29de3f0a
children	355632dca928