Qt 4.3: extrafiltersplugin.h Example File (tools/plugandpaintplugins/extrafilters/extrafiltersplugin.h)

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# extrafiltersplugin.h Example File
tools/plugandpaintplugins/extrafilters/extrafiltersplugin.h

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     #ifndef EXTRAFILTERSPLUGIN_H
     #define EXTRAFILTERSPLUGIN_H

     #include <QObject>
     #include <QStringList>
     #include <QImage>

     #include <plugandpaint/interfaces.h>

     class ExtraFiltersPlugin : public QObject, public FilterInterface
     {
         Q_OBJECT
         Q_INTERFACES(FilterInterface)

     public:
         QStringList filters() const;
         QImage filterImage(const QString &filter, const QImage &image,
                            QWidget *parent);
     };

     #endif