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To: sdl@libsdl.org From: Christian Walther <cwalther@gmx.ch> Date: Wed, 28 Dec 2005 12:13:20 +0100 Subject: [SDL] Fix for opening documents on Mac OS X < 10.4 The current code in SDLMain.m that transforms documents opened from the Finder into command-line arguments (introduced in revision 1.14, 2005-08-11) uses the methods -[NSString lengthOfBytesUsingEncoding:] and -[NSString getCString:maxLength:encoding:], which are only available in Mac OS X 10.4. Compiling this code on 10.3 produces warnings, and running it (i.e. starting an SDL application by opening a document) leads to weird behavior which I didn't investigate in detail ("*** -[NSCFString lengthOfBytesUsingEncoding:]: selector not recognized" is printed to the console log, and the SDL window never opens). The attached patch removes the offending calls and uses -[NSString UTF8String] instead, which is available everywhere. Tested on 10.3.9, and I see no reason why it shouldn't also work on 10.2 and 10.4. Two further comments: * The comment above the -[SDLMain application: openFile:] implementation says "You need to have a CFBundleDocumentsType section in your Info.plist to get this message, apparently." This is not the case in my experience - it worked just fine with a hand-built bare-bones application consisting only of Test.app/Contents/MacOS/test, without any Info.plist (although you have to press the option and command keys for such an application to accept a dragged file). * I took the liberty of cleaning up another area of SDLMain.m: I changed "CustomApplicationMain (argc, argv)" to "CustomApplicationMain (int argc, char **argv)". This avoids the "type of `argv' defaults to `int'" warnings, and I'm not sure if leaving out the types could cause problems on platforms where an int and a char** aren't of the same size. -Christian
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 01 Jan 2006 23:45:52 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_PauseAudio</TITLE
><META
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
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><H1
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>SDL_PauseAudio</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN6765"
></A
><H2
>Name</H2
>SDL_PauseAudio&nbsp;--&nbsp;Pauses and unpauses the audio callback processing</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN6768"
></A
><H2
>Synopsis</H2
><DIV
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><A
NAME="AEN6769"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_PauseAudio</B
></CODE
>(int pause_on);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6775"
></A
><H2
>Description</H2
><P
>This function pauses and unpauses the audio callback processing.
It should be called with <TT
CLASS="PARAMETER"
><I
>pause_on</I
></TT
>=0 after opening the audio
device to start playing sound.  This is so you can safely initialize
data for your callback function after opening the audio device.
Silence will be written to the audio device during the pause.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6779"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlgetaudiostatus.html"
><TT
CLASS="FUNCTION"
>SDL_GetAudioStatus</TT
></A
>,
<A
HREF="sdlopenaudio.html"
><TT
CLASS="FUNCTION"
>SDL_OpenAudio</TT
></A
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