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svgalibsurface.h Example File
qws/svgalib/svgalibsurface.h

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 #ifndef SVGALIBSURFACE_H
 #define SVGALIBSURFACE_H

 #include "svgalibpaintengine.h"
 #include "svgalibpaintdevice.h"
 #include <private/qwindowsurface_qws_p.h>

 class SvgalibPaintDevice;

 class SvgalibSurface : public QWSWindowSurface
 {
 public:
     SvgalibSurface();
     SvgalibSurface(QWidget *w);
     ~SvgalibSurface();

     void setGeometry(const QRect &rect);
     bool isValid() const { return true; }
     bool scroll(const QRegion &region, int dx, int dy);
     QString key() const { return QLatin1String("svgalib"); }

     bool attach(const QByteArray &) { return true; }
     void detach() {}

     QImage image() const { return QImage(); }
     QPaintDevice *paintDevice() { return pdevice; }
     QPoint painterOffset() const;

 private:
     SvgalibPaintDevice *pdevice;
 };

 #endif // SVGALIBSURFACE_H