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****************************************************************************/

#include <QtGui>

int main()

{

    int x, y;

    {

        // BIT ACCESS

        QImage image;

        // sets bit at (x, y) to 1

        if (image.format() == QImage::Format_MonoLSB)

            image.scanLine(y)[x >> 3] |= 1 << (x & 7);

        else

            image.scanLine(y)[x >> 3] |= 1 << (7 - (x & 7));

    }

    {

        // 8-BIT ACCESS

        QImage image;

        // set entry 19 in the color table to yellow

        image.setColor(19, qRgb(255, 255, 0));

        // set 8 bit pixel at (x,y) to value yellow (in color table)

        image.scanLine(y)[x] = 19;

    }

    {

        // 32-BIT

        QImage image;

        // sets 32 bit pixel at (x,y) to yellow.

        uint *ptr = reinterpret_cast<uint *>(image.scanLine(y)) + x;

        *ptr = qRgb(255, 255, 0);

    }

    {

        // SAVE

//! [0]

        QImage image;

        QByteArray ba;

        QBuffer buffer(&ba);

        buffer.open(QIODevice::WriteOnly);

        image.save(&buffer, "PNG"); // writes image into ba in PNG format

//! [0]

    }

    {

        // PIX SAVE

//! [1]

        QPixmap pixmap;

        QByteArray bytes;

        QBuffer buffer(&bytes);

        buffer.open(QIODevice::WriteOnly);

        pixmap.save(&buffer, "PNG"); // writes pixmap into bytes in PNG format

//! [1]

    }

    {

        // MASK

//! [2]

        QPixmap alpha("image-with-alpha.png");

        QPixmap alphacopy = alpha;

        alphacopy.setMask(alphacopy.mask());

//! [2]

    }

}