sdl_getmodstate.3

MPEG-4编解码的实现(包括MPEG4视音频编解码)

.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