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annotate docs/man3/SDL_JoyBallEvent.3 @ 3235:d35b649858e0

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David Carre to Sam Hello sam, me again. I'v fixed another bug in the pandora code, it's on the no-X videodriver, i forgot to add some code to destroy the window so it was impossible to reload SDL inside the same application (eglTerminate). You'll find the svn diff attached. See you, David.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 11 Aug 2009 13:45:01 +0000
parents 546f7c1eb755
children 1238da4a7112
rev   line source
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1 .TH "SDL_JoyBallEvent" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_JoyBallEvent \- Joystick trackball motion event structure
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4 .SH "STRUCTURE DEFINITION"
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5 .PP
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6 .nf
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7 \f(CWtypedef struct{
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8 Uint8 type;
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9 Uint8 which;
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10 Uint8 ball;
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11 Sint16 xrel, yrel;
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12 } SDL_JoyBallEvent;\fR
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13 .fi
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14 .PP
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15 .SH "STRUCTURE DATA"
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16 .TP 20
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17 \fBtype\fR
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18 \fBSDL_JOYBALLMOTION\fP
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19 .TP 20
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20 \fBwhich\fR
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21 Joystick device index
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22 .TP 20
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23 \fBball\fR
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24 Joystick trackball index
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25 .TP 20
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26 \fBxrel\fR, \fByrel\fR
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27 The relative motion in the X/Y direction
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28 .SH "DESCRIPTION"
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29 .PP
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30 \fBSDL_JoyBallEvent\fR is a member of the \fI\fBSDL_Event\fR\fR union and is used when an event of type \fBSDL_JOYBALLMOTION\fP is reported\&.
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31 .PP
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32 A \fBSDL_JOYBALLMOTION\fP event occurs when a user moves a trackball on the joystick\&. The field \fBwhich\fR is the index of the joystick that reported the event and \fBball\fR is the index of the trackball (for a more detailed explaination see the \fIJoystick section\fR)\&. Trackballs only return relative motion, this is the change in position on the ball since it was last polled (last cycle of the event loop) and it is stored in \fBxrel\fR and \fByrel\fR\&.
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33 .SH "SEE ALSO"
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34 .PP
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35 \fI\fBSDL_Event\fR\fR, \fIJoystick Functions\fR, \fI\fBSDL_JoystickEventState\fP\fR, \fI\fBSDL_JoystickGetBall\fP\fR
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36 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59