Mercurial > sdl-ios-xcode
view docs/man3/SDL_GetModState.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_GetModState" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" .SH "NAME" SDL_GetModState\- Get the state of modifier keys\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBSDLMod \fBSDL_GetModState\fP\fR(\fBvoid\fR); .SH "DESCRIPTION" .PP Returns the current state of the modifier keys (CTRL, ALT, etc\&.)\&. .SH "RETURN VALUE" .PP The return value can be an OR\&'d combination of the SDLMod enum\&. .PP .PP .RS \fBSDLMod\fR .PP .PP .nf \f(CWtypedef enum { KMOD_NONE = 0x0000, KMOD_LSHIFT= 0x0001, KMOD_RSHIFT= 0x0002, KMOD_LCTRL = 0x0040, KMOD_RCTRL = 0x0080, KMOD_LALT = 0x0100, KMOD_RALT = 0x0200, KMOD_LMETA = 0x0400, KMOD_RMETA = 0x0800, KMOD_NUM = 0x1000, KMOD_CAPS = 0x2000, KMOD_MODE = 0x4000, } SDLMod;\fR .fi .PP .RE SDL also defines the following symbols for convenience: .PP .RS .PP .nf \f(CW#define KMOD_CTRL (KMOD_LCTRL|KMOD_RCTRL) #define KMOD_SHIFT (KMOD_LSHIFT|KMOD_RSHIFT) #define KMOD_ALT (KMOD_LALT|KMOD_RALT) #define KMOD_META (KMOD_LMETA|KMOD_RMETA)\fR .fi .PP .RE .SH "SEE ALSO" .PP \fI\fBSDL_GetKeyState\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59