Difference between revisions of "Development/Tutorials/PIM/ical"

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(main.cpp)
(build and run it)
Line 57: Line 57:
 
== build and run it ==
 
== build and run it ==
 
  cmake . && make -j8 && ./kdestart
 
  cmake . && make -j8 && ./kdestart
 +
 +
== result ==
 +
If we delete /tmp/test.ics and then run the program, the file will look about like this:
 +
# cat /tmp/test.ics
 +
BEGIN:VCALENDAR
 +
PRODID:-//K Desktop Environment//NONSGML libkcal 4.3//EN
 +
VERSION:2.0
 +
BEGIN:VTODO
 +
DTSTAMP:20110926T090835Z
 +
CREATED:20110926T090835Z
 +
UID:libkcal-1018318974.1052
 +
LAST-MODIFIED:20110926T090835Z
 +
SUMMARY:test todo
 +
PERCENT-COMPLETE:0
 +
END:VTODO
 +
END:VCALENDAR
 +
However, the UID is calculated by random. If we run the program several times, it will append new todos, not overwrite any.

Revision as of 10:10, 26 September 2011

iCal is a standardized data format for storing appointments, events and todos in a calendar file. It is being used by Apple and Outlook. Using the KDE libraries you can read and write files in this format.

Contents

Loading a calendar

Here is the easiest test case: A program that loads /tmp/test.ics.

CMakeLists.txt

PROJECT( kde4start )
FIND_PACKAGE(KDE4 REQUIRED)
INCLUDE_DIRECTORIES( ${KDE4_INCLUDES} . )


SET(kde4startSources main.cpp )

KDE4_ADD_EXECUTABLE(kde4start ${kde4startSources} )

TARGET_LINK_LIBRARIES(kde4start ${KDE4_KDEUI_LIBS} ${KDE4_KCAL_LIBS} ${KDE4_KPARTS_LIBS} kdepim kcal_resourceremote )

main.cpp

/*
This is a demo/test case for KDE's iCalendar functionality.
(c) 2008-2011 by Thorsten Staerk
*/

#include <QString>
#include <kapplication.h>
#include <kaboutdata.h>
#include <kcmdlineargs.h>
#include <KMainWindow>
#include <kcal/resourcecalendar.h>
#include <kcal/resourcecached.h>
#include <kcal/resourcelocal.h>

int main (int argc, char *argv[])
{
  const QByteArray& ba=QByteArray("test");
  const KLocalizedString name=ki18n("myName");
  KAboutData aboutData( ba, ba, name, ba, name);
  KCmdLineArgs::init( argc, argv, &aboutData );
  KApplication khello;
  KCal::ResourceCalendar* cal;
  KCal::ResourceCached* resource;
  resource=new KCal::ResourceLocal("/tmp/test.ics");
  cal=resource;
  cal->load();
  KCal::Todo* todo1 = new KCal::Todo();
  todo1->setSummary("test todo");
  cal->addTodo(todo1);
  KABC::Lock *lock = cal->lock();
  cal->save();
  lock->unlock();
}

build and run it

cmake . && make -j8 && ./kdestart

result

If we delete /tmp/test.ics and then run the program, the file will look about like this:

# cat /tmp/test.ics
BEGIN:VCALENDAR
PRODID:-//K Desktop Environment//NONSGML libkcal 4.3//EN
VERSION:2.0
BEGIN:VTODO
DTSTAMP:20110926T090835Z
CREATED:20110926T090835Z
UID:libkcal-1018318974.1052
LAST-MODIFIED:20110926T090835Z
SUMMARY:test todo
PERCENT-COMPLETE:0
END:VTODO
END:VCALENDAR

However, the UID is calculated by random. If we run the program several times, it will append new todos, not overwrite any.


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