Tips & tricks

Misc tips to enhance your productivity or solve small problems

Optimization of real-time video processing on Nokia N95 smartphone

To work with real-time video one needs at least two things - direct access to bitmaps and fast way to get frames from a video camera. To achieve the first goal one needs to keep in mind that Bitmaps are located on a shared heap that needs to be locked before any direct access can safely take place.

Carbide.c++ Quick Outline

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carbide.jpgCarbide.c++ is a rich and sometimes complex IDE. It is also full of small useful features that can speed-up your works once known. Today, I have just discovered about the Quick Outline feature. Not a revolution as the Outline view is generally present in the Carbide C/C++ perspective, however this view has a problem with it: you generally just see the name of the class and not your function.

WebKit Browser Control wrapper

S60 3.0 and 3.1 both have WebKit Browser Control available, but developers have to link their applications against different libraries. This short tutorial explains how you can use the same application binary for both S60 3.0 and 3.1 and still use the WebKit Browser Control for both.

Base64, Quoted Printable and UU Encoding and Decoding

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It sometimes happen when writing connected application that you need to manipulate data in Base64, Quoted Printable or UU format. This is fairly easy with Symbian OS as three simple classes, all derivating from TImCodec, will do the job for you...

Top 5 common mistakes to cause memory leaks in Symbian C++ applications

Even in a relatively large scale Symbian applications developed in multiple locations by many different people, the different ways to cause memory leaks are not as diverse as one might think.

Here's a list so that once you've read through it you'll be sure to avoid more than two thirds of the most common beginner mistakes and slip ups that cause memory leaks in Symbian C++ applications.

Tracking down hardware exceptions on hardware

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Hardware exceptions are abnormal events triggered by the ARM instruction being executed. The sources of this can be accessing non-existing memory, accessing mis-aligned memory, writing to a read-only area of memory, jumping to invalid memory address, local stack overflow and so forth.
Tracking down hardware exceptions is a developer’s nightmare.

Using Bluetooth with Symbian UIQ 3 SDK

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A super short guide to how to setup a UIQ3 Emulator to use a Bluetooth USB dongle. All you need is the Bluetooth USB driver from Nokia and a bit of tweaking in the bt.bt.esk file...

How to create a static array of literals

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Defining an array of text string is a basic task that most developer need to do. This is simple on most environment... but not so trivial in Symbian OS where you have to deal with descriptors and literals. Here is how to define an array of literals.

Running an EXE from a file explorer on Symbian 9 device

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All EXE files on a Symbian 9 device shall be located in "/sys/bin", which in most of the case not accessible from a File Explorer. There is however a nice side effect which would allow you to start your EXE file using a File Explorer on a S60 3rd Edition device.

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