Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_JoystickGetBall.3 @ 19:8cc4dbfab9ab
Date: Thu, 19 Apr 2001 08:36:54 +0300
From: "Mike Gorchak" <mike@malva.com.ua>
Subject: Patches for QNX RtP
Here my patch for QNX RtP/Photon for SDL-1.2.
Detailed description of my changes:
SDL/configure.in:
If Photon detected declare define ENABLE_PHOTON.
SDL/src/video/SDL_sysvideo.h:
Added extern to ph_bootstrap.
SDL/src/video/SDL_video.c:
Added ph_bootstrap to bootstrap array.
SDL/src/video/photon/SDL_ph_events.c:
Declare DISABLE_X11 if compiled for Photon.
SDL/src/video/photon/SDL_ph_image.c:
Fixed segment violation on exit. Please update BUGS file.
SDL/src/video/photon/SDL_ph_video.c:
1. Enabling window manager.
2. Added to device capabilities Photon Window Manager functions:
SetCaption and IconifyWindow.
3. Renamed X11_bootstrap to ph_bootstrap.
4. Removed SEGFAULT termination of programs if Photon not available.
SDL/src/video/photon/SDL_ph_wm.c:
1. Declare DISABLE_X11 if compiled for Photon.
2. Added ph_SetCaption and ph_IconifyWindow code. (Thanks to
'phearbear' for iconify window source).
3. Some stubers for other wm functions.
Thanks !
----------------------------
Mike Gorchak
CJSC Malva
System Programmer
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Thu, 10 May 2001 18:42:17 +0000 |
| parents | 74212992fb08 |
| children | 55f1f1b3e27d |
| rev | line source |
|---|---|
| 0 | 1 .TH "SDL_JoystickGetBall" "3" "Mon 12 Mar 2001, 01:03" "SDL" "SDL API Reference" |
| 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 | |
| 37 ...\" created by instant / docbook-to-man, Mon 12 Mar 2001, 01:03 |