Mercurial > sdl-ios-xcode
view docs/man3/SDL_JoystickGetHat.3 @ 1626:a80e1e0880b8
Fixed bug #176
[I'm fixing this for the public headers, but I'm not going to bother for the SDL library code (yet)]
To clarify: Normaly, GCC (or, to be precise, the preprocessor) will ignore
this, and compile the code happily. However, one can specify -Wundef to get a
warning about this.
One can probably argue whether to consider this a bug or not; but I think that
(a) from a semantic point of view, using "#if FOO" when FOO is not defined is
strange, and (b) since it is possible to trigger a warning about this, and a
trivial fix exists, it should be corrected.
I can think of two alternative patches, BTW:
1) Simply use #define HAVE_FOO 0, instead of not defining HAVE_FOO at all
2) Change
#if HAVE_FOO
to
#if HAVE_FOO+0
which always does the right thing.
But I think I still prefer the attached patch :-).
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 13 Apr 2006 13:38:40 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
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.TH "SDL_JoystickGetHat" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" .SH "NAME" SDL_JoystickGetHat\- Get the current state of a joystick hat .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBUint8 \fBSDL_JoystickGetHat\fP\fR(\fBSDL_Joystick *joystick, int hat\fR); .SH "DESCRIPTION" .PP SDL_JoystickGetHat returns the current state of the given \fBhat\fR on the given \fBjoystick\fR\&. .SH "RETURN VALUE" .PP The current state is returned as a Uint8 which is defined as an OR\&'d combination of one or more of the following .IP "" 10 \fBSDL_HAT_CENTERED\fP .IP "" 10 \fBSDL_HAT_UP\fP .IP "" 10 \fBSDL_HAT_RIGHT\fP .IP "" 10 \fBSDL_HAT_DOWN\fP .IP "" 10 \fBSDL_HAT_LEFT\fP .IP "" 10 \fBSDL_HAT_RIGHTUP\fP .IP "" 10 \fBSDL_HAT_RIGHTDOWN\fP .IP "" 10 \fBSDL_HAT_LEFTUP\fP .IP "" 10 \fBSDL_HAT_LEFTDOWN\fP .SH "SEE ALSO" .PP \fI\fBSDL_JoystickNumHats\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00