Jonathan Riddell Canonical Kubuntu Ubuntu KDE jriddell@ubuntu.com Qt and Qt Quick Jonathan Riddell Canonical Kubuntu Ubuntu KDE jriddell@ubuntu.com

A GUI toolkit to get passionate about Qt A GUI toolkit to get passionate about Cross platform Free Software culture Open Development LGPL or “commercial” API is everything

Qt Nokia

Qt Used to make KDE, Scribus, Google Earth, Adobe Photoshop Elements, Skype, HP Printer Tools... Most uses are internal

Hello World #include <QtGui/QApplication> #include <QtGui/QLabel> int main(int argc, char *argv[]) { QApplication a(argc, argv); QLabel label("Hello World"); label.show(); return a.exec(); }

Cross Platform Write once compile for: Windows GNU/Linux, KDE, Gnome, Meego Every other Unix Mac Symbian Windows CE Android

Hello Python World from PyQt4.QtGui import * app = QApplication([]) label = QLabel("hello world") label.show() app.exec_()

Designer Slots and Signals Hello World 2 Designer Slots and Signals

More modules QtCore QtGui Phonon QtNetwork QtOpenGL QtScript QtSql QtSvg QtWebkit QtXml QtTest QtDBus QtDeclarative

QML QtDeclarative Qt Quick Designer

Hello Qt Quick World import Qt 4.7 Rectangle { width: 200 height: 200 Text { x: 66 y: 93 text: "Hello World" }

Components Transitions Hello Qt Quick World 2 Components Transitions

Qt Quick Examples Kontact Mobile

Qt Quick Examples

Qt Quick Examples Samegame Text 10.10

Questions? Qt, Qt Quick, KDE, Ubuntu, Kubuntu, Canonical... Qt and Qt Quick Questions? Qt, Qt Quick, KDE, Ubuntu, Kubuntu, Canonical...