sudo apt-get install build-essential qt4-designer qtcreator qtcreator-doc qt4-demos qt4-doc qt4-dev-tools libqt4-dev
Now feel free to go to Applications -> Programming -> Qt 4 Creator and do something creative.
Qt 4 C++ Netbeans development
But what if you want to use Netbeans to develop Qt 4 C++ applications? Piece of cake. Follow me... First step is to install Netbeans (you've probably guessed that one).
sudo apt-get install netbeans
Next step is to start Netbeans by going to the Applications -> Programming -> Netbeans. Netbeans is primarily Java IDE so we must make sure that Netbeans has C++ support plugin. So inside Netbeans interface we go to Tools -> Plugins and then switch to "Installed" tab. Here we must make sure that "C/C++" plugin is amongst installed plugins. If not, we switch to "Available plugins" tab and put checkbox next to "C/C++" plugin and click install at the bottom of the dialog. After "C/C++" plugin is installed along with it we acquired Qt 4 project support for Netbeans.
But there is one thing we must do before we start coding. We must tell Netbeans the path to the "qmake-qt4" program necessary to compile Qt 4 applications. We need to go to Tools -> Options and switch to the "C/C++" tab. Next to the "QMake Command" label we must enter path to the "qmake-gt4" program. If you are using Ubuntu Linux operating system you need to enter this path:
Now click OK and find "Hello World" tutorial like this one. So here you go, now you have full blown Qt 4 development environment inside you Ubuntu box.