Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_SetEventFilter.3 @ 614:0b4c3f5ff63d
Date: Wed, 9 Apr 2003 18:21:33 -0230
From: Stephen Anthony <stephena@roadrunner.nf.net>
Subject: [SDL] First patch concerning 4.3 and refresh rates
OK, here's my first draft of the patch for the above subject.
A short explanation:
X 4.3 introduces many more modelines than older versions. This would be
fine, except it introduces many modes with the *same* resolution but
different refresh rates. And SDL won't necessarily pick the one with the
highest refresh rate.
So this patch restores SDL to X 4.2 functionality. That is, there is only
ever one refresh rate *per* resolution, and it is the highest possible.
This functionality can be totally disabled by using the environment
variable 'SDL_VIDEO_X11_USE_ALL_MODES' set equal to 1.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 20 Apr 2003 05:36:52 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_SetEventFilter" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_SetEventFilter\- Sets up a filter to process all events before they are posted to the event queue\&. | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBvoid \fBSDL_SetEventFilter\fP\fR(\fBSDL_EventFilter filter\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 This function sets up a filter to process all events before they are posted to the event queue\&. This is a very powerful and flexible feature\&. The filter is prototyped as: | |
| 12 .PP | |
| 13 .nf | |
| 14 \f(CWtypedef int (*SDL_EventFilter)(const SDL_Event *event);\fR | |
| 15 .fi | |
| 16 .PP | |
| 17 If the filter returns \fB1\fR, then the event will be added to the internal queue\&. If it returns \fB0\fR, then the event will be dropped from the queue\&. This allows selective filtering of dynamically\&. | |
| 18 .PP | |
| 19 There is one caveat when dealing with the \fBSDL_QUITEVENT\fP event type\&. The event filter is only called when the window manager desires to close the application window\&. If the event filter returns 1, then the window will be closed, otherwise the window will remain open if possible\&. If the quit event is generated by an interrupt signal, it will bypass the internal queue and be delivered to the application at the next event poll\&. | |
| 20 .PP | |
| 21 .RS | |
| 22 \fBNote: | |
| 23 .PP | |
| 24 Events pushed onto the queue with \fI\fBSDL_PushEvent\fP\fR or \fI\fBSDL_PeepEvents\fP\fR do not get passed through the event filter\&. | |
| 25 .RE | |
| 26 .PP | |
| 27 .RS | |
| 28 \fBNote: | |
| 29 .PP | |
| 30 \fIBe Careful!\fP The event filter function may run in a different thread so be careful what you do within it\&. | |
| 31 .RE | |
| 32 .SH "SEE ALSO" | |
| 33 .PP | |
| 34 \fI\fBSDL_Event\fR\fR, \fI\fBSDL_GetEventFilter\fP\fR, \fI\fBSDL_PushEvent\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
35 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59 |