- Qt 5.5
- Qt Core
- Queued Custom Type Example
- main.cpp Example File
- Qt 5.5.1 Reference Documentation

# main.cpp Example File

threads/queuedcustomtype/main.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
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    ** modification, are permitted provided that the following conditions are
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    **     from this software without specific prior written permission.
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    #include <QApplication>
    #include <QPainter>
    #include <QTime>
    #include "block.h"
    #include "window.h"

    QImage createImage(int width, int height)
    {
        QImage image(width, height, QImage::Format_RGB16);
        QPainter painter;
        QPen pen;
        pen.setStyle(Qt::NoPen);
        QBrush brush(Qt::blue);

        painter.begin(&image);
        painter.fillRect(image.rect(), brush);
        brush.setColor(Qt::white);
        painter.setPen(pen);
        painter.setBrush(brush);

        static const QPointF points1[3] = {
            QPointF(4, 4),
            QPointF(7, 4),
            QPointF(5.5, 1)
        };

        static const QPointF points2[3] = {
            QPointF(1, 4),
            QPointF(7, 4),
            QPointF(10, 10)
        };

        static const QPointF points3[3] = {
            QPointF(4, 4),
            QPointF(10, 4),
            QPointF(1, 10)
        };

        painter.setWindow(0, 0, 10, 10);

        int x = 0;
        int y = 0;
        int starWidth = image.width()/3;
        int starHeight = image.height()/3;

        QRect rect(x, y, starWidth, starHeight);

        for (int i = 0; i < 9; ++i) {

            painter.setViewport(rect);
            painter.drawPolygon(points1, 3);
            painter.drawPolygon(points2, 3);
            painter.drawPolygon(points3, 3);

            if (i % 3 == 2) {
                y = y + starHeight;
                rect.moveTop(y);

                x = 0;
                rect.moveLeft(x);

            } else {
                x = x + starWidth;
                rect.moveLeft(x);
            }
        }

        painter.end();
        return image;
    }

    int main(int argc, char *argv[])
    {
        QApplication app(argc, argv);
        qRegisterMetaType<Block>();
        qsrand(QTime::currentTime().elapsed());

        Window window;
        window.show();

        window.loadImage(createImage(256, 256));
        return app.exec();
    }