Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_AddTimer.3 @ 967:cda407d627a3
Date: Tue, 5 Oct 2004 11:04:02 -0400
From: Bob Ippolito
Subject: [SDL] PATCH: Fix for release count bug in SDL_QuartzWM
SDL_QuartzWM incorrectly does [window close]; [window release];
The semantics for -[NSWindow close] are as follows:
Removes the receiver from the screen. If the receiver is set to be
released when closed, a release message is sent to the object after the
current event is completed. For an NSWindow object, the default is to
be released on closing, while for an NSPanel object, the default is not
to be released. You can use the setReleasedWhenClosed: method to change
the default behavior.
This patch simply removes the incorrect release.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 12 Nov 2004 21:29:52 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
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181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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1 .TH "SDL_AddTimer" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_AddTimer\- Add a timer which will call a callback after the specified number of milliseconds has elapsed\&. | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBSDL_TimerID \fBSDL_AddTimer\fP\fR(\fBUint32 interval, SDL_NewTimerCallback callback, void *param\fR); | |
| 9 .SH "CALLBACK" | |
| 10 .PP | |
| 11 .nf | |
| 12 \f(CW/* type definition for the "new" timer callback function */ | |
| 13 typedef Uint32 (*SDL_NewTimerCallback)(Uint32 interval, void *param);\fR | |
| 14 .fi | |
| 15 .PP | |
| 16 .SH "DESCRIPTION" | |
| 17 .PP | |
| 18 Adds a callback function to be run after the specified number of milliseconds has elapsed\&. The callback function is passed the current timer interval and the user supplied parameter from the \fBSDL_AddTimer\fP call and returns the next timer interval\&. If the returned value from the callback is the same as the one passed in, the periodic alarm continues, otherwise a new alarm is scheduled\&. | |
| 19 .PP | |
| 20 To cancel a currently running timer call \fISDL_RemoveTimer\fR with the timer ID returned from \fBSDL_AddTimer\fP\&. | |
| 21 .PP | |
|
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55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
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22 The timer callback function may run in a different thread than your main program, and so shouldn\&'t call any functions from within itself\&. You may always call \fISDL_PushEvent\fR, however\&. |
| 0 | 23 .PP |
|
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55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
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24 The granularity of the timer is platform-dependent, but you should count on it being at least 10 ms as this is the most common number\&. This means that if you request a 16 ms timer, your callback will run approximately 20 ms later on an unloaded system\&. If you wanted to set a flag signaling a frame update at 30 frames per second (every 33 ms), you might set a timer for 30 ms (see example below)\&. If you use this function, you need to pass \fBSDL_INIT_TIMER\fP to \fISDL_Init\fR\&. |
| 0 | 25 .SH "RETURN VALUE" |
| 26 .PP | |
| 27 Returns an ID value for the added timer or \fBNULL\fR if there was an error\&. | |
| 28 .SH "EXAMPLES" | |
| 29 .PP | |
| 30 .PP | |
| 31 .nf | |
| 32 \f(CWmy_timer_id = SDL_AddTimer((33/10)*10, my_callbackfunc, my_callback_param);\fR | |
| 33 .fi | |
| 34 .PP | |
| 35 .SH "SEE ALSO" | |
| 36 .PP | |
|
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55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
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37 \fI\fBSDL_RemoveTimer\fP\fR, \fI\fBSDL_PushEvent\fP\fR |
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181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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38 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |