/* $Id: event.h 840 2007-09-09 12:17:42Z michael $ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/event.h $ * * generic timer handling * * Copyright (C) 2009 Ed Martin * Copyright (C) 2009 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef _EVENT_H_ #define _EVENT_H_ #include //events are identified by their file descriptor only /* * these functions allow plugins to add event hooks * (and thus break out of the main loop when sleeping) * these callbacks than then trigger named events to propagate * the event to the screen */ typedef enum { EVENT_READ = 1, EVENT_WRITE = 2, EVENT_HUP = 4, EVENT_ERR = 8 } event_flags_t; int event_add(void (*callback) (event_flags_t flags, void *data), void *data, const int fd, const int read, const int write, const int active); int event_del(const int fd); int event_modify(const int fd, const int read, const int write, const int active); int event_process(const struct timespec *timeout); void event_exit(void); /* * These fuctions keep a list of the events to trigger on allowing multiple * things to trigger an event and multiple things to receive the event */ //add an event to be triggered int named_event_add(char *event, void (*callback) (void *data), void *data); //remove an event from the list of events int named_event_del(char *event, void (*callback) (void *data), void *data); int named_event_trigger(char *event); //call all calbacks for this event #endif ue='search'/>
path: root/README.Plugins
blob: 88ca467841d8add79a7f894229fad2b1f528ec57 (plain) 
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#
# $Id: README.Plugins,v 1.2 2004/06/01 06:04:25 reinelt Exp $
#


This file contains instructions for writing plugins to lcd4linux.

- use the file 'plugin_sample.c' as a template
- copy the file to 'plugin_yourname.c' and edit
- replace the "$Id..." in the first line with "$Id\$" (without backslash)
- add a short description what this plugin is for
- add your copyright notice (important: your name and email)
- replace the "$Log..." with "$Log\$" (without backslash)
- remove all Log lines until "*/"
- do some documentation (I know that real programmers write programs, not documentation)
- use one or more of the example functions as templates for your own functions
- register your new functions to the init() function, delete the sample ones
- edit 'plugin.c', add a prototype and the call to your plugin_init_* function
- edit 'Makefile.am' and add your 'plugin_*.c' to lcd4linux_SOURCES
- compile and test with interactive mode ('-i')
- send me a patch (or check in if you have developer CVS access)
- enjoy
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