sdl_joybuttonevent.3

网络MPEG4IP流媒体开发源代码

.TH "SDL_JoyButtonEvent" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_JoyButtonEvent\- Joystick button event structure
.SH "STRUCTURE DEFINITION"
.PP
.nf
\f(CWtypedef struct{
  Uint8 type;
  Uint8 which;
  Uint8 button;
  Uint8 state;
} SDL_JoyButtonEvent;\fR
.fi
.PP
.SH "STRUCTURE DATA"
.TP 20
\fBtype\fR
\fBSDL_JOYBUTTONDOWN\fP or \fBSDL_JOYBUTTONUP\fP
.TP 20
\fBwhich\fR
Joystick device index
.TP 20
\fBbutton\fR
Joystick button index
.TP 20
\fBstate\fR
\fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP
.SH "DESCRIPTION"
.PP
\fBSDL_JoyButtonEvent\fR is a member of the \fI\fBSDL_Event\fR\fR union and is used when an event of type \fBSDL_JOYBUTTONDOWN\fP or \fBSDL_JOYBUTTONUP\fP is reported\&.
.PP
A \fBSDL_JOYBUTTONDOWN\fP or \fBSDL_JOYBUTTONUP\fP event occurs when ever a user presses or releases a button on a joystick\&. The field \fBwhich\fR is the index of the joystick that reported the event and \fBbutton\fR is the index of the button (for a more detailed explaination see the \fIJoystick section\fR)\&. \fBstate\fR is the current state or the button which is either \fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_Event\fR\fR, \fIJoystick Functions\fR, \fI\fBSDL_JoystickEventState\fP\fR, \fI\fBSDL_JoystickGetButton\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59