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Bug 303

Summary: SDL_GetKeyState
Product: SDL Reporter: John Funge <jfunge>
Component: *don't know*Assignee: Ryan C. Gordon <icculus>
Status: RESOLVED INVALID QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: 1.2.11   
Hardware: PowerPC   
OS: Mac OS X 10.4 (Intel)   

Description John Funge 2006-08-19 00:55:21 UTC 
On MacOS X 10.4 (Intel) SDL_GetKeyState doesn't seem to correctly report the status of keys.  For example, in the following code snippet, the assert never fires.

   Uint8* keys(SDL_GetKeyState(NULL));
   if (keys[SDLK_ESCAPE]) { assert(false); }

It seems that the problem is that the key presses never reach the application.  In particular, they seem to show up in terminal window from which the application was started.  The problem does not occur on the PPC version of any version of MaxOS X that I've tested (including 10.4), all Windows versions I've tested are also fine (including XP and W2K), as are all versions of Linux I've tested (including Fedora Core 4).

If it helps, the code I'm using is available:

   svn co https://svn.sourceforge.net/svnroot/ai4games ai4games

And compiles on MacOS X using SCons.  There is also some support for XCode.

Thanks.

John.
Comment 1 Sam Lantinga 2006-09-24 12:01:50 UTC 
This sounds like you're not linking with SDLmain, which contains some window system setup code so your window can receive keyboard events.  See README.MacOSX for details on building SDL applications with various build systems on Mac OS X.

You can also try out SDL 1.3, which has completely rewritten Mac OS X support so special steps are not necessary.