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I've made so many changes I don't dare continue until I check the current stuff in. /test/testatomic.c performs absolutely basic tests to show that the function work as expected. Need a second test to do more detailed tests. /include/SDL_atomic.h provides declarations for all included functions. /src/atomic/linux/SDL_atomic.c provided all the functions. On a generic built the 64 bit functions work, but they are emulated. On a build for -march=pentium and above the 64 bit functions use native instructions /src/atomic/dummy/SDL_atomic.c emulates all the operations using SDL_mutex.h. /src/atomic/win32/SDL_atomic.c is a copy of dummy /src/atomic/macosx/SDL_atomic.s is a copy of dummy These versions of SDL_atomic.c provide a frame work for building the library with a mixture of native and emulated functions. This allows the whole library to be provided on all platforms. (I hope.) I hope this fits with the SDL philosophy of either providing a common subset or emulating when the platform is missing a feature. I have not added dummy, macosx, or win32 to the build. They are there as place holders for future work. I have modified congifure.in to compile sources in /src/atomic/linux. (The SDL configure.in file is an amazing piece of work and I hope I didn't mess it up. :-)
author Bob Pendleton <bob@pendleton.com>
date Mon, 29 Jun 2009 19:54:43 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_ShowCursor</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="SDL Library Documentation"
HREF="index.html"><LINK
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HREF="video.html"><LINK
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TITLE="SDL_GetCursor"
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><H1
><A
NAME="SDLSHOWCURSOR"
></A
>SDL_ShowCursor</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2615"
></A
><H2
>Name</H2
>SDL_ShowCursor&nbsp;--&nbsp;Toggle whether or not the cursor is shown on the screen.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2618"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN2619"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_ShowCursor</B
></CODE
>(int toggle);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2625"
></A
><H2
>Description</H2
><P
>Toggle whether or not the cursor is shown on the screen. Passing <TT
CLASS="LITERAL"
>SDL_ENABLE</TT
> displays the cursor and passing <TT
CLASS="LITERAL"
>SDL_DISABLE</TT
> hides it. The current state of the mouse cursor can be queried by passing <TT
CLASS="LITERAL"
>SDL_QUERY</TT
>, either <TT
CLASS="LITERAL"
>SDL_DISABLE</TT
> or <TT
CLASS="LITERAL"
>SDL_ENABLE</TT
> will be returned.</P
><P
>The cursor starts off displayed, but can be turned off.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2634"
></A
><H2
>Return Value</H2
><P
>Returns the current state of the cursor.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2637"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlcreatecursor.html"
><TT
CLASS="FUNCTION"
>SDL_CreateCursor</TT
></A
>,
<A
HREF="sdlsetcursor.html"
><TT
CLASS="FUNCTION"
>SDL_SetCursor</TT
></A
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