diff options
Diffstat (limited to 'distrib/sdl-1.2.15/docs/man3/SDL_JoystickGetBall.3')
| -rw-r--r-- | distrib/sdl-1.2.15/docs/man3/SDL_JoystickGetBall.3 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/docs/man3/SDL_JoystickGetBall.3 b/distrib/sdl-1.2.15/docs/man3/SDL_JoystickGetBall.3 new file mode 100644 index 0000000..124c910 --- /dev/null +++ b/distrib/sdl-1.2.15/docs/man3/SDL_JoystickGetBall.3 @@ -0,0 +1,37 @@ +.TH "SDL_JoystickGetBall" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" +.SH "NAME" +SDL_JoystickGetBall \- Get relative trackball motion +.SH "SYNOPSIS" +.PP +\fB#include "SDL\&.h" +.sp +\fBint \fBSDL_JoystickGetBall\fP\fR(\fBSDL_Joystick *joystick, int ball, int *dx, int *dy\fR); +.SH "DESCRIPTION" +.PP +Get the \fBball\fR axis change\&. +.PP +Trackballs can only return relative motion since the last call to \fBSDL_JoystickGetBall\fP, these motion deltas a placed into \fBdx\fR and \fBdy\fR\&. +.SH "RETURN VALUE" +.PP +Returns \fB0\fR on success or \fB-1\fR on failure +.SH "EXAMPLES" +.PP +.PP +.nf +\f(CWint delta_x, delta_y; +SDL_Joystick *joy; +\&. +\&. +\&. +SDL_JoystickUpdate(); +if(SDL_JoystickGetBall(joy, 0, &delta_x, &delta_y)==-1) + printf("TrackBall Read Error! +"); +printf("Trackball Delta- X:%d, Y:%d +", delta_x, delta_y);\fR +.fi +.PP +.SH "SEE ALSO" +.PP +\fI\fBSDL_JoystickNumBalls\fP\fR +.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00 |