By Dan Zucker, Ray Rischpater

Whereas media buzz on a regular basis circulates round iPhone and Android, Nokia nonetheless leads the pack when it comes to global industry proportion. Symbian, for example, is still the main widespread cellular working process. With Nokia's open improvement platform, the possibilities to be had for cellular builders to focus on this enormously well known working method are plentiful and transparent. Use Qt to focus on either systems: Symbian, the main typical cellular working method on the earth, in addition to MeeGo, the Intel/Nokia platform for cellular units. advance HTML5 functions for either Symbian and MeeGo structures that might run with little amendment on different cellular systems. beginner builders examine the fundamentals of Qt with a cellular slant, giving them the power to focus on either machine and cellular systems. What you’ll study the way to do Qt fundamentals what's QML or the Qt Markup Language what's Qt for Meego and the way to take advantage of it and the way to exploit it the best way to paintings with the internet Runtime Why cellular improvement is diverse how one can port/support MeeGo and Symbian systems Who this publication is for This must-have booklet is for cellular builders desirous to goal the Meego and Symbian systems (either because the sole platform or in cross-platform development), and latest cellular builders eager to begin utilizing Qt. desk of Contents Introducing Nokia’s software program Platform Designing Your program operating with the Nokia Qt SDK starting Qt improvement Doing extra with Qt Introducing Qt fast constructing with HTML5 checking out Your software Deploying Your software

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Part Developing Your Application II 39 Chapter 3 Working with the Nokia Qt SDK Just as desktop software development often uses an integrated development environment (IDE) with a compiler, linker, headers, and libraries, so does development for mobile terminals. Nokia provides such an IDE for performing Qt development. c++ IDE is still available for C++ development as well. In this chapter we provide a tutorial that shows you how to get, install, and use the free IDE for Qt software development.

Furthermore, prototypes do not need to be actual working code. Some application behavior can be represented and explored using a static visual representation, such as PowerPoint or even drawings on pieces of paper. Flowella is an interaction design and prototyping tool available from Forum Nokia. It is meant for designers and other nonprogrammers to quickly prototype and interact with UIs during the design and development process. The tool allows you to quickly and easily add navigation and flow information to visual assets, then play with the resulting prototype on a desktop simulator or on an actual mobile device using Flash, web widgets, or even QML.

When designing your application, you must take these limited resources into account. In choosing algorithms, try to select those that require less memory. When designing data structures, avoid wasted memory. It is critical to spend the extra time upfront to ensure your memory allocation is as efficient as possible. You also need to design your application so that it can handle situations when such device resources as memory are low or exhausted. Typically this is implemented by handling a signal or message from the system telling you that the system is out of resources.

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