Introduction to Symbian C++ Programming

Introduction to Symbian C++ Programming

Huang, Chi-Chia2009.02.05

1Context-Aware Group, Intelligent Agents Lab, NTU

Based on Symbian OS Basics Workbook 3.1

Outline

• Setting up development environment• Basic concept of Symbian C++• Porting to Cell phone

Context-Aware Group, Intelligent Agents Lab 2

Development Environment

• Java runtime environment• Carbide C++

– Download from Forum.Nokia.com– Account needed

• ActivePerl– Active Perl 5.6.1 build 631

• SDK– S60 3rd Edition, Feature Pack 1– Download from Forum.Nokia.com– Account needed


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Carbide C++


Emulator


Basic Concept of Symbian C++

• Stack and Heap• Leaves• Two Phase construction• Active Object


Stack and Heap

• Stack– Object are delete automatically– Default size is 8kb

• Heap– Object must deleted by programmer using delete

• Example


Leaves

• Leaves are used instead of C++ exception• When there is a resource failure, the code “leave”• The new operator has been overload to leave if

insufficient memory is available– Use new (ELeave)

• Functions that can leave should end in “L”


Two Phase Construction

• C++ constructor must never leave as the destructor will not be called


Active Object

• Events are scheduled by the active scheduler• Events are handled by active object• Each application has an active scheduler• The active scheduler runs in a loop in the application’s

main loop• Active objects have a:

– TRequestStatus bas class member, iStatus, that is passed inro asynchronous functions

– RunL() Function that is called when the action completes– DoCancel() function that is called when the action is cancelled



Active Object


Porting to Cell Phone











• Symbian Signed


Documents

Introduction to Symbian C++ Programming