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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
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>SDL_VideoDriverName</TITLE
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>SDL_VideoDriverName</H1
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><H2
>Name</H2
>SDL_VideoDriverName&nbsp;--&nbsp;Obtain the name of the video driver</DIV
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>Synopsis</H2
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><P
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><PRE
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>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>char *<B
CLASS="FSFUNC"
>SDL_VideoDriverName</B
></CODE
>(char *namebuf, int maxlen);</CODE
></P
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><H2
>Description</H2
><P
>The buffer pointed to by <TT
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><I
>namebuf</I
></TT
> is filled up to a maximum of <TT
CLASS="PARAMETER"
><I
>maxlen</I
></TT
> characters (include the NULL terminator) with the name of the initialised video driver. The driver name is a simple one word identifier like "x11" or "windib".</P
></DIV
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><A
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><H2
>Return Value</H2
><P
>Returns <TT
CLASS="LITERAL"
>NULL</TT
> if video has not been initialised with <TT
CLASS="FUNCTION"
>SDL_Init</TT
> or a pointer to <TT
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><I
>namebuf</I
></TT
> otherwise.</P
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