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# Trivial Example

This example is trivial, and thus useful for investigating problems you might have installing the extension.

To build the example, you must first build the Qt Netscape Plugin Extension library. Then type `make` in `extensions/nsplugin/examples/trivial/` and copy the resulting `trivial.so` or `nptrivial.dll` to the Plugins directory of your WWW browser.

Implementation:

    // Qt stuff
    #include "qnp.h"
    #include <qpainter.h>
    #include <qmessagebox.h>

    class Trivial : public QNPWidget {
        Q_OBJECT
    public:
        void mouseReleaseEvent(QMouseEvent* event)
        {
            QMessageBox::aboutQt(this);
        }

        void paintEvent(QPaintEvent* event)
        {
            QPainter p(this);
            p.setClipRect(event->rect());
            int w = width();
            p.drawRect(rect());
            p.drawText(w/8, 0, w-w/4, height(), AlignCenter|WordBreak, "Trivial!");
        }
    };

    class TrivialInstance : public QNPInstance {
        Q_OBJECT
    public:
        QNPWidget* newWindow()
        {
            return new Trivial;
        }

        void print(QPainter* p)
        {
            p->drawText(0,0,"Hello");
        }
    };

    class TrivialPlugin : public QNPlugin {
    public:
        QNPInstance* newInstance()
        {
            return new TrivialInstance;
        }

        const char* getMIMEDescription() const
        {
            return "trivial/very:xxx:Trivial and useless";
        }

        const char * getPluginNameString() const
        {
            return "Trivial Qt-based Plugin";
        }

        const char * getPluginDescriptionString() const
        {
            return "A Qt-based LiveConnected plug-in that does nothing";
        }

    };

    QNPlugin* QNPlugin::create()
    {
        return new TrivialPlugin;
    }

    #include "trivial.moc"

See also Netscape Plugin Examples.