Introduction to Symbian C++ Programming Huang, Chi-Chia Context-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 Lab2

Development Environment Java runtime environment Carbide C++ – Download from Forum.Nokia.comForum.Nokia.com – Account needed ActivePerl – Active Perl build 631 SDK – S60 3rd Edition, Feature Pack 1 – Download from Forum.Nokia.comForum.Nokia.com – Account needed Context-Aware Group, Intelligent Agents Lab3

Carbide C++ Context-Aware Group, Intelligent Agents Lab4

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Carbide C++ Context-Aware Group, Intelligent Agents Lab13

Emulator Context-Aware Group, Intelligent Agents Lab14

Basic Concept of Symbian C++ Stack and Heap Leaves Two Phase construction Active Object Context-Aware Group, Intelligent Agents Lab15

Stack and Heap Stack – Object are delete automatically – Default size is 8kb Heap – Object must deleted by programmer using delete Example Context-Aware Group, Intelligent Agents Lab16

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” Context-Aware Group, Intelligent Agents Lab17

Two Phase Construction C++ constructor must never leave as the destructor will not be called Context-Aware Group, Intelligent Agents Lab18

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 Context-Aware Group, Intelligent Agents Lab19

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Active Object Context-Aware Group, Intelligent Agents Lab21

Porting to Cell Phone Context-Aware Group, Intelligent Agents Lab22

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Porting to Cell Phone Symbian Signed Context-Aware Group, Intelligent Agents Lab27