Treinamento de Qt básico apresentado na semanada de tecnologia do Barão de Mauá (Ribeirão Preto/SP) usando um material provido pela Nokia com modificações.

1. . The ideas behind Qt and a live demo Qt in Education Semana de tecnologia do Barão de Mauá Instrutor: Marcelo Barros de Almeida [email_address]

2. © 2010 Nokia Corporation and its Subsidiary(-ies). The enclosed Qt Educational Training Materials are provided under the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License Agreement. The full license text is available here: http://creativecommons.org/licenses/by-nc-sa/2.5/legalcode . Nokia, Qt and the Nokia and Qt logos are the registered trademarks of Nokia Corporation in Finland and other countries worldwide.

6. All code is still plain C++ foreach (int value, intList) { … } QObject *o = new QPustButton; o->metaObject()->className(); // returns ”QPushButton” connect(button, SIGNAL(clicked()), window, SLOT(close()));

8. Builds native applications with native look and feel

9. Easy to (re)use API, high developer productivity, openess, fun to use

11. Mac OS X

12. Linux/Unix X11

14. Symbian

15. Maemo

17. Where is Qt used?

18. Where is Qt used?

22. Changes to Qt can be kept closed

24. 1994 – The company Trolltech was formed

25. 1996 – The KDE project was started by Matthias Ettrich (now works for Nokia Qt Development Frameworks)

27. 2005 – All platforms released under GPL

28. 2008 – Nokia acquires Trolltech

29. 2009 – Support for S60

30. 2010 – Support for Meego

32. More than 2M of source lines of code

33. ~180 developers working on Qt

35. You can pay Qt for support.

36. You can use the community for support.

37. Or both...

40. KDE TechBase (techbase.kde.org) wiki + =

41. Getting Qt Installers and snapshots are downloaded from qt.nokia.com/downloads Bleeding edge source trees are located at qt.gitorious.com

43. Pre-built Qt libraries and tools

44. The QtCreator integrated development environment

46. Run the downloaded installer

47. Click through the installer

48. Start QtCreator from the start menu

50. Run the downloaded installer package

51. Click through the installer

52. Start QtCreator from the Finder

54. Make the installer executable

55. Run the installer and click your way through it

56. Start QtCreator from your desktop or menu chmod u+x qt-sdk-linux-*.bin

57. Demonstration

58. Qt Installation: - Qt SDK for Windows - Nokia Qt SDK for Windows

60. (K)ubuntu – qt-sdk from universe

61. Debian – qtcreator

62. OpenSUSE – qt-creator

63. Gentoo – qt-creator

64. Arch Linux – qt qt-doc qt-creator

65. ...

66. Hello World

67. Hello World #include <QApplication> #include <QLabel> int main( int argc, char **argv ) { QApplication app( argc, argv ); QLabel l( &quot;Hello World!&quot; ); l.show(); return app.exec(); }

68. Hello World #include <QApplication> #include <QLabel> int main( int argc, char **argv ) { QApplication app( argc, argv ); QLabel l( &quot;Hello World!&quot; ); l.show(); return app.exec(); }

69. Hello World #include <QApplication> #include <QLabel> int main( int argc, char **argv ) { QApplication app( argc, argv ); QLabel l( &quot;Hello World!&quot; ); l.show(); return app.exec(); }

70. Hello World #include <QApplication> #include <QLabel> int main( int argc, char **argv ) { QApplication app( argc, argv ); QLabel l( &quot;Hello World!&quot; ); l.show(); return app.exec(); }

71. Hello World #include <QApplication> #include <QLabel> int main( int argc, char **argv ) { QApplication app( argc, argv ); QLabel l( &quot;Hello World!&quot; ); l.show(); return app.exec(); }

72. Exercises