Qt Tutorial - Part 1

Qt is a registered product of Digia

Intro to QtGUI programming with C++

by Đức Phạm

Organized by

Đức Phạm

Email: inducpham@gmail.com

Bachelor of IT since 2009

Linux enthusiast

Worked in Gameloft and now is East Agile

Interest in Game and Web development

History

Developed by Trolltech

Acquired by Nokia

Commercial license took over by Digia

In a nutshell

Qt is ‘cute’

Cross-platform GUI library for the C++

programming language

A complete interface environment with support

for Webkit API, media streamer, file system

browser, OpenGL API, etc.

VLC 2.x running in Windows, OS X 10.7

and Debian Linux

In a nutshell (continue)

Support embedded Linux

Smart phones: Maemo, Meego, etc.

Electronic devices: Car, TV, etc.

Feature road map including support for

popular mobile platforms such as

Android and iOS.

Legal stuff

Qt offers three licenses:

GPL v3

lGPL

Digia commercial license

Installation

Official download: http://qt-project.org/downloads

Official IDE: QtCreator

Visual Studio add-in

Debian repository:

sudo apt-get install qtcreator qtcreator-dbg

Technical features

Customized precompiler: signal and slot

Technical features (continue)

Signals don’t need to be implemented, but

rather called

Signals and slots can be connected:

Regardless of which object

Many-many relationship

Could be disconnected

Technical features (continue)

Features the parent-child relationship

A child widget when created could reference to

a parent widget. This allows:

Hierarchy search: findChild() and

findChildren()

Chain destructor on parent de-allocating

Tech demo

Qt in the world

Industrial

Skype

VirtualBox

Maya

Opera

Various embedded software

Qt in the world (continue)

KDE

Complete desktop environment in Qt

Including the Plasma Window manager

Projects including Office Applications

Development suite: Kdevelop

Common desktop applications

Qt in the world (continue)

Open source projects

Qt razor

http://qt-apps.org/

Further references

http://qt-project.org/doc/qt-4.8/

http://www.youtube.com/user/VoidRealms

http://www.kde.org/developerplatform/

http://qt-apps.org/

Questions?

Thank you!