QT - a C++ based GUI

QT’s Designer

andAssistant

What we are about! downloading QT setting up your environment QT Assistant and QT Designer The QT Designer Quick Start

Tutorial

QT Availability QT can be downloaded from the internet

for either a PC or Unix www.trolltech.com

The PC version runs on many different variations of Windows from Windows 95 up.

Installation is straight forward. QT is installed on acad and intmain. needs xterm to run.

Setting up your Environment

Set up your environment include /usr/local/qt/bin

in your path variable include setenv QTDIR "/usr/local/qt“

for your environment In your home directory, make a

subdirectory qt for your qt applications

Testing the setup cd qt mkdir hello cd hello cp /export/home/public/gordon/cis520/hello.zip . Unzip the file Give the following commands:

qmake –project // builds the project file qmake // builds the Makefile make // the executable hello // is the directory name

Examples In $QTDIR/examples, there are

more than 76 examples that can be copied and studied.

Only the DB examples don’t work, since no drivers come with the free version

Feel free to browse the examples.

Using QT Usually you want to put all the code

for a project in a single directory. Our first project will come from QT’s

tutorial – a GUI metric conversion cd qt mkdir metric cd metric

Starting Assistant and Designer

To start QT Assistant, give the command assistant &

To start QT Designer, give the command designer &

Quick Start We will do the quick start tutorial for QT

Designer which is found in QT Assistant From the Home Page of QT Assistant,

scroll down to the Tools section, select QT Designer, and then select Quick Start

We will build a complete working example in about an hour. We will then use what we learned to complete a project that accesses an Oracle database with Object-Oriented approach.

Starting and Exiting Qt Designer

Starting To start Qt Designer under Windows click the Start button

and click Programs|Qt X.x.x|Designer. (X.x.x is the Qt version number, e.g. 3.2.1.)

If you're running a Unix or Linux operating system you can either double click the Qt Designer icon or enter designer & in an xterm.

Start Qt Designer now. When Qt Designer starts, it shows the New/Open dialog. We'll just click Cancel to skip it.

Exiting click File|Exit; you will be prompted to save any unsaved

changes.

The Metric Conversion start assistant

assistant & open the quick start tutorial in QT’s

assistant open designer & follow the tutorial