JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition – December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.

The wxJSON library is a complete implementation of the JSON data-interchange format. All JSON specifications are implemented in this library plus some extensions in the writer and in the parser class.

Today wxJSON 1.1.0 was announced. This release is compatible with both wxWidgets 2.8 and 2.9. It is also compatible with wxWidgets SVN HEAD. Now JSON reader and writer only process UTF-8 encoded text as a stream.
Also added a new wxJSONValue’s member function to get values and fixed the bugs in wxJSONValue::IsSameAs()

• Official home page of wxJSON
• Read complete list of changes in this version
  

Вдохновленнный читаемой нынче книгой My Job Went to India: 52 Ways to Save Your Job решил покорять новые горизонты. Наткнулся несколько дней назад на вводную статью о wxRuby и сегодня решил попробовать. Оказывается это не так страшно.
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Надо же,в wxBlog такое рассказывают. Оказывается Google Summer of Code для wxWidgets принес много полезного в этом году. Обещают поддержку нотификаций об изменениях файловой системы – wxFSWatcher, а также (внимание!) Ribbon для wxWidgets – wxRibbonBar. А еще…. апгрейды всевозможные для wxAUI (жду не дождусь collapsible panes и tabbed docking).

Все это будет в svn trunk и не факт что появится в ветке 2.8. Так что “кто куды, а мы к зайцам” (с), пойду качать svn trunk. Там кстати еще много чего полезного появилось. Если вы пользуетесь стабильной версией 2.8, рекомендую хотя бы попробовать trunk.

Еще вскользь упомянули, что потихоньку развивается wxSymbian и wxQNX. Порт для Symbian мне кажется очень перспективным, да.

In one of my current projects I had to implement client-server communication and protection by MAC address when client machine can’t connect to server if its MAC address is not allowed. But what was a surprise that wxWidgets does not have API which allows obtaining MAC address in cross-platform way. So, I decided to write a small class which allows obtainig MAC address for Windows, Linux, Mac OS and Windows Mobile. Here it is:
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Taking screenshots is a very common task and it was a must for one of my current projects. What was a surprise when I understood that my favourite toolkit can’t do that in cross-platform manner.

It is official bug that wxScreenDC does not work properly under Mac OS and you can’t use Blit() message for copying screen onto wxMemoryDC.

After digging the Internet I found a kind of solution which used OpenGL and created wxWidgets-based class which takes screenshots also under Mac OS. It was really hard task for me because I haven’t used neither Carbon nor Cocoa before. However everything works now and I’m happy.

Here it is:
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http://code.google.com/p/axtk/

What is AxTk?

AxTk (pronounced Ay Ex Tee Kay) is an open source, C++ add-on for wxWidgets that helps developers create highly accessible, talking applications for users with impaired vision. It may also be useful for other impairments that benefit from a simplified user interface.

AxTk features a new menu-based system that is easy to learn and use, in addition to providing adaptation for some existing GUI controls and dialogs. The developer can choose whether to use the menu system, or to adapt an existing application UI, or use a combination of methods.

AxTk is cross-platform (tested so far on Windows XP, Linux and Mac OS X 10.5), and includes text-to-speech classes with the ability to drive SAPI 5, Apple Speech Synthesis Manager, eSpeak, and Cepstral. Other speech engines can be driven by writing additional handlers.

Note that AxTk is a work in progress and the API is subject to change.
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Первая статья из цикла, повествующего о том, ка киспользовать библиотеку cairo (и обертку wxCairo) с wxWidgets.

В этот раз речь пойдет о том, как собрать библиотеку cairo с помощью Visual C++ в Windows.

Для начала определимся, что нам нужно:

• Mozilla Build 1.3
• cairo 1.8.6
• libpng 1.2.35
• zlib 1.2.3
• pixman 0.14.0

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Вслед за анонсом новой версии DatabaseLayer, кросс-платформенной библиотеки для работы с базами данных, решил выложить небольшой туториал с примером использования DatabaseLayer.

В этот раз мы рассмотрим пример создания простейшего консольного приложения, использующего эту библиотеку для работы с базами данных.

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Yesterday jb_coder announced new version of cross-platform database access library for wxWidgets, DatabaseLayer 1.8.

DatabaseLayer provides access to different types of databases using unified wxWidgets-based API. It supports:

• SQLite3
• Firebird
• MySQL
• PostgreSQL
• Oracle
• Microsoft SQL Server
• ODBC

Here is the list of changes for this release:

• Changed RunQuery message signature to return a list of affected records
  
• Database backends are dynamically loaded (at the request of users)
  
• Ship with an internal version of SQLite3 to reduce dependency issues when compiling
  
• UNICODE fixes for ODBC code
  
• ODBC backend should now work for MS SQL Server
  
• Various fixes for ODBC, Firebird, MySQL, and PostgreSQL backends
  
• Added compile targets “databaselayer” and “databaselayer_gpl” to compile the library with multiple database backends
  
• Added DLL exports to be able to use DatabaseLayer as a dynamic library

You can download DatabaseLayer 1.8 from wxCode

Read discussion of this release at wxForum.