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/*!

    \example script/qstetrix

    \title Qt Script Tetrix Example

    The QSTetrix example is a Qt Script version of the classic Tetrix game.

    \image tetrix-example.png

    \section1 Overview

    The program logic in this example is a fairly straight port of the

    logic in the C++ \l{Tetrix Example}. You may find it useful to compare

    the implementations of the \c TetrixBoard, \c TetrixPiece and

    \c TetrixWindow classes to see how Qt Script is used to implement

    methods, call Qt functions, and emit signals.

    \section1 Setting up the GUI

    The graphical user interface is defined in a UI file, created

    using Qt Designer, and is set up in the example's C++ \c{main.cpp} file.

    \snippet examples/script/qstetrix/main.cpp 0

    We define a custom UI loader that handles our \c TetrixBoard widget; this

    is the main component of the UI (where the pieces are drawn).

    \snippet examples/script/qstetrix/main.cpp 1

    We initialize the script engine to have the Qt namespace, so that

    e.g., \l{Qt::Key_Left}{Qt.Key_Left} will be available to script code.

    We also make the application object available (for the

    \l{QApplication::}{quit()} slot).

    \snippet examples/script/qstetrix/main.cpp 2

    Several scripts are evaluated as part of the engine setup process.

    The \c{tetrixpiece.js} file contains the definition of the \c TetrixPiece

    class, which is used to populate the play field. The \c{tetrixboard.js}

    file contains the definition of the \c TetrixBoard class, which contains

    the main game logic. Finally, \c{tetrixwindow.js} contains the definition

    of the \c TetrixWindow class, which wires up the top-level widget.

    \snippet examples/script/qstetrix/main.cpp 3

    A form is created from the UI file. A new \c TetrixWindow script object

    is then constructed, passing the form as its argument.

    \snippet examples/script/qstetrix/main.cpp 4

    The form is shown, and the event loop is entered.

*/