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window.cpp Example File
^{opengl/textures/window.cpp}

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    **
    ** This file is part of the documentation of the Qt Toolkit.
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    ** and appearing in the file LICENSE.GPL included in the packaging of
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    #include <QtGui>

    #include "glwidget.h"
    #include "window.h"

    Window::Window()
    {
        QGridLayout *mainLayout = new QGridLayout;

        glWidgets[0][0] = 0;

        for (int i = 0; i < NumRows; ++i) {
            for (int j = 0; j < NumColumns; ++j) {
                QColor clearColor;
                clearColor.setHsv(((i * NumColumns) + j) * 255
                                  / (NumRows * NumColumns - 1),
                                  255, 63);

                glWidgets[i][j] = new GLWidget(this, glWidgets[0][0]);
                glWidgets[i][j]->setClearColor(clearColor);
                glWidgets[i][j]->rotateBy(+42 * 16, +42 * 16, -21 * 16);
                mainLayout->addWidget(glWidgets[i][j], i, j);

                connect(glWidgets[i][j], SIGNAL(clicked()),
                        this, SLOT(setCurrentGlWidget()));
            }
        }
        setLayout(mainLayout);

        currentGlWidget = glWidgets[0][0];

        QTimer *timer = new QTimer(this);
        connect(timer, SIGNAL(timeout()), this, SLOT(rotateOneStep()));
        timer->start(20);

        setWindowTitle(tr("Textures"));
    }

    void Window::setCurrentGlWidget()
    {
        currentGlWidget = qobject_cast<GLWidget *>(sender());
    }

    void Window::rotateOneStep()
    {
        if (currentGlWidget)
            currentGlWidget->rotateBy(+2 * 16, +2 * 16, -1 * 16);
    }