Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_JoystickGetBall.3 @ 55:55f1f1b3e27d
Added new docs for SDL 1.2.1
author | Sam Lantinga <slouken@lokigames.com> |
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date | Sun, 10 Jun 2001 19:31:57 +0000 |
parents | 74212992fb08 |
children | e5bc29de3f0a |
rev | line source |
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55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1 .TH "SDL_JoystickGetBall" "3" "Sun 10 Jun 2001, 19:41" "SDL" "SDL API Reference" |
0 | 2 .SH "NAME" |
3 SDL_JoystickGetBall\- Get relative trackball motion | |
4 .SH "SYNOPSIS" | |
5 .PP | |
6 \fB#include "SDL\&.h" | |
7 .sp | |
8 \fBint \fBSDL_JoystickGetBall\fP\fR(\fBSDL_Joystick *joystick, int ball, int *dx, int *dy\fR); | |
9 .SH "DESCRIPTION" | |
10 .PP | |
11 Get the \fBball\fR axis change\&. | |
12 .PP | |
13 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\&. | |
14 .SH "RETURN VALUE" | |
15 .PP | |
16 Returns \fB0\fR on success or \fB-1\fR on failure | |
17 .SH "EXAMPLES" | |
18 .PP | |
19 .PP | |
20 .nf | |
21 \f(CWint delta_x, delta_y; | |
22 SDL_Joystick *joy; | |
23 \&. | |
24 \&. | |
25 \&. | |
26 SDL_JoystickUpdate(); | |
27 if(SDL_JoystickGetBall(joy, 0, &delta_x, &delta_y)==-1) | |
28 printf("TrackBall Read Error! | |
29 "); | |
30 printf("Trackball Delta- X:%d, Y:%d | |
31 ", delta_x, delta_y);\fR | |
32 .fi | |
33 .PP | |
34 .SH "SEE ALSO" | |
35 .PP | |
36 \fI\fBSDL_JoystickNumBalls\fP\fR | |
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
37 ...\" created by instant / docbook-to-man, Sun 10 Jun 2001, 19:41 |