QT is a product of Trolltech, Trolltech is a software company in Norway, mainly developing two products: a cross-platform application interface framework; another is to provide an application platform for embedded Linux development, PDA and various mobile devices, Trolltech Website: http://www.trolltech.com/.
QT is a multi-platform C graphical user interface application framework that provides the application developer to establish the functionality required to create an art graphical user interface. Qt is fully object-to-object, it is easy to expand and allow real component programming. Starting in 1996, QT officially entered the business sector, which became the basis for thousands of successful applications worldwide. QT is also the basis of popular Linux desktop environment KDE, Note: KDE is a standard component of all major Linux issuers. Qt currently supports the following platforms:
MS / Windows - 95, 98, NT 4.0, ME, XP, 2000, 2003 (new QT compatible .NET)
UNIX / X11 - Linux, Sun Solaris, HP-UX, Compaq Tru64 UNIX, IBM AIX, SGI Irix, and many other X11 platforms
Macintosh - Mac OS X
Embedded - a Linux platform supported by framebuffer.
Qt has the following versions, the QT professional version and the enterprise version are the commercial version of QT, QT free version is a non-commercial version of Qt, you can download for free.
n ???? QT Enterprise Edition and QT Professional Delivery to Commercial Software Development. They offer traditional business software issues and provide free upgrade and technical support services.
N ???? Qt free version is the UNIX / X11 version provided by QT only to develop free and open source software. Under Q Public License and GNU General Public License, it is free.
n ???? QT / Embedded free version is an embedded version provided by QT to develop free software. Under GNU General Public License, it is free.
Only you have purchased a professional or enterprise version, you can write business, private or charged software. If you purchased these business versions, you can also get technical support and upgrade services. Qt running Microsoft's Windows operating system only provides professional and enterprise versions.
Professional Edition / Enterprise Edition Comparison Table Professional Edition Enterprise Edition QT Basic Module (Tools, Core, Window Components, Dialogs) and Platform-independent QT Graphics User Interface Kit and Applications
√
√
QT designer
Contemporated QT graphical user interface generator
√
√
Icon view module
A few sets of graphical user interaction visual effects.
√
√
Workspace module
Multi-document interface (MDI) support
√
√
OpenGL 3D graphics module
Integrated OpenGL in QT
?
√
Network module
Some sockets, TCP, FTP, and asynchronous DNS queries and classes unrelated to the platform.
?
√
Canvas module
Optimized two-dimensional graphics fields for visual effects, charts and others.
?
√
Table module
Flexible editable table / spreadsheet
?
√
XML module
A well-formed XML parser via SAX interface and Dom Level 1.
?
√
SQL module
SQL Database Access Class.
?
√
?
System environment: Operating system red flag Linux 4.1 desktop version, QT-X11-free-3.3.2
download link:
Red Flag Linux 4.1 desktop version: http://www.redflag-linux.com/xiazai/xiazai.php? Id = 1361
Qt-x11-free-3.3.2: http://www.trolltech.com/download/QT/X11.html
