Application services
Base
New IPC Mechanisms for Symbian OS
In the following we examine the new Inter-Process Communication mechanisms available to applications and servers in Symbian OS. Understanding when and how these are required is essential in properly architecting components and making optimum use of the OS capabilities. Read the paper (120 Kb) (updated at 24th of February 2005)
GPRS
GPRS Facts for the Internet Application Developer (Part 1)
Understand the advantages that GPRS confers over GSM. Learn about the importance of sessions and multiple PDP contexts. Be aware of issues with roaming and the limitations that Network Address Translation Gateways impose, especially on UDP protocol users. Read the paper (97 Kb)
IMS
An Introduction to IMS
(Symsource)The first in a pair of papers, this one gives an overview of IMS and looks at two of its most important protocols, SIP and SDP. Read the paper (145kb)
Symbian OS IMS APIs
(Symsource)This paper forms the second part of a two-part series about IMS on Symbian and will cover what Symbian has to offer in more detail, including a tour of the APIs, a section on how to use them, and an outline of some useful patterns. Read the paper (210kb)
LBS
Introduction to Location-Based Services
(Husham Hamdan)There is increased interest in Location-Based Services (LBS) across the three major mobile phone markets – the US, Europe and Asia. This will continue as more Global Positioning System-enabled (GPS-enabled) phones become available, fuelled by falling chipset prices. Symbian OS provides the most comprehensive support for Location-Based Services available on any operating system.Read the paper
Notifiers
Using and Extending Symbian OS Notifiers
(Hamish Willee)This paper describes mechanisms that you can use to display user notifications and prompts when your code does not include a full GUI environment; for example if you’re writing a server or engine code.Read the paper (354kb) Download the source code (76kb)
PIM
Using the new Symbian OS v9 Calender API
(Mark Shackman)The Calendar API replaces the Agenda API that was present in versions of Symbian OS prior to v9.1, and provides information scheduling and exchange functionality according to RFC 2445. This paper explains how to use the Calendar API and contains code snippets to demonstrate how the API is used in practice.Using the new v9 Calender API PDFCalender API Migration Guide PDF
FAQs
Here you can find the answers to the most frequently asked developer questions, together with other useful tech tips.More