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From: Tyler Montbriand <tsm@accesscomm.ca> To: sdl@libsdl.org Date: Fri, 30 Sep 2005 02:24:50 -0600 Subject: [SDL] WinCE timers, continued Here's a strange timer for Windows CE that doesn't ignore time across suspends. It uses GetSystemTime to keep the time continuous, and GetTicks to get finer-grained readings than 1 second. It detects the difference between the GetTicks time and GetSystemTime time on power-on to keep the error within one second max. It's not a patch on the current win32 timer code -- took one look at that and figured it had more than enough #ifdefs already. It's windows-ce specific. Another thing I've noticed is that the Windows CE 4.0 and newer API has functions warn processes about suspends. This is something SDL REALLY needs for audio in particular, because turning it off while it's playing causes anything that uses audio to hardlock the system on power-on. Unfortunately I don't have 4.0 to play with. :(
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 22 Nov 2005 07:10:07 +0000
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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