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# Trivial Example

This example is trivial, and thus useful for investigating problems you might have installing plugins. If everything works correctly, the `trivial` plugin should appear below as a rectangular field below with some text in it:

Implementation:

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     ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
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     ** This file is part of the Qt Solutions component.
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     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
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     **   * Redistributions of source code must retain the above copyright
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     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
     **     the names of its contributors may be used to endorse or promote
     **     products derived from this software without specific prior written
     **     permission.
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     #include <QtGui>
     #include <qtbrowserplugin.h>

     class Trivial : public QWidget
     {
         Q_OBJECT
         Q_PROPERTY(QString text READ text WRITE setText)

         Q_CLASSINFO("ClassID", "{5a22176d-118f-4185-9653-9f98958a6df8}")
         Q_CLASSINFO("InterfaceID", "{2df735ba-da4f-4fb7-8f35-b8dfbf8cfd9a}")
         Q_CLASSINFO("EventsID", "{449de213-f8bd-4d2e-a2cf-eab407c03245}")

         Q_CLASSINFO("MIME", "trivial/very:xxx:Trivial and useless")
         Q_CLASSINFO("ToSuperClass", "Trivial")
         Q_CLASSINFO("DefaultProperty", "text")

     public:
         Trivial(QWidget *parent = 0)
             : QWidget(parent)
         {
             m_text = QString::fromLatin1("Empty");
         }

         void mousePressEvent(QMouseEvent *)
         {
             mouseDown();
         }
         void mouseMoveEvent(QMouseEvent *e)
         {
             mouseMove(e->x(), e->y());
         }
         void mouseReleaseEvent(QMouseEvent*)
         {
             mouseUp();
         }
         QString text() const
         {
             return m_text;
         }

     public slots:
         void about()
         {
             QMessageBox::aboutQt(this);
         }
         void setText(const QString &text)
         {
             m_text = text;
             update();
         }

     signals:
         void mouseDown();
         void mouseMove(int x, int y);
         void mouseUp();

     protected:
         void paintEvent(QPaintEvent*)
         {
             QPainter p(this);
             QRect r(rect());
             r.adjust(0, 0, -1, -1);

             p.drawRect(r);
             p.drawText(r, Qt::AlignCenter, m_text);
         }

     private:
         QString m_text;
     };

     #include "trivial.moc"

     QTNPFACTORY_BEGIN("Trivial Qt-based Plugin", "A Qt-based LiveConnected plug-in that does nothing")
         QTNPCLASS(Trivial)
     QTNPFACTORY_END()

     #ifdef QAXSERVER
     #include <ActiveQt/QAxFactory>
     QAXFACTORY_BEGIN("{aa3216bf-7e20-482c-84c6-06167bacb616}", "{08538ca5-eb7a-4f24-a3c4-a120c6e04dc4}")
         QAXCLASS(Trivial)
     QAXFACTORY_END()
     #endif