Qt 4.5, Qt Creator released

New offerings include Qt 4.5, Qt Creator IDE version 1.0, and the new Qt SDK



Oslo, 03 March 2009 – Nokia announced today the availability of version 4.5 of the Qt cross-platform application and UI framework. It also introduced Qt Creator, a new lightweight cross-platform Integrated Development Environment (IDE), Qt 4.5 and Qt Creator combined comprises the Qt SDK, an easy to install package that will let application developers to create applications quickly and easily.

- source -

http://www.qtsoftware.com/

The first Qt program, hello.cpp

After install MinGW and Qt For Windows, we can creat our first Qt application now.

- Involve "Qt 4.3.0 Command Prompt" from Windows menu.
- Create sub-folder to hold your work if you want. And change to your works folder.
- Create a file "hello.cpp" with the following contents:


#include <QApplication>
#include <QLabel>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QLabel *label = new QLabel("Hello Qt!");
label->show();
return app.exec();
}

- To create platform-independent project file (hello.pro), type
qmake -project

- To create platform-specific makefile from the project file, type
qmake hello.pro

- Finally build the program, type
make

- Run the generated program, change to the sub-folder "release", and run the program by type
hello

download and Install Qt for Windows

In order to run develope Qt application on Windows platform, a C compiler such as MinGW, and Qt for Windows are need.

Install MinGW - Minimalist GNU for Windows:
In order to simplify the process, I download the Self download & install MinGW-5.1.3.exe here:
http://sourceforge.net/project/showfiles.php?group_id=2435





- download MinGW-5.1.3.exe and run it.
- Follow the steps & start download the required files.













Install Qt for Windows:
Free Qt/Windows Open Source Edition can be download here:
http://trolltech.com/developer/downloads/qt/windows

- Click the downloaded file to start installation of Qt

Qt

Qt sets the standard for high-performance, cross-platform application development. It includes a C++ class library and tools for cross-platform development and internationalization. Qt also provides unique solutions to inter-object communication, goes beyond C++ to add flexibility for advanced GUI development and provides a special edition for back-end server applications.