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renderthread.h Example File
threads/queuedcustomtype/renderthread.h

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 #ifndef RENDERTHREAD_H
 #define RENDERTHREAD_H

 #include <QImage>
 #include <QMutex>
 #include <QThread>
 #include "block.h"

 class RenderThread : public QThread
 {
     Q_OBJECT

 public:
     RenderThread(QObject *parent = 0);
     ~RenderThread();

     void processImage(const QImage &image);

 signals:
     void sendBlock(const Block &block);

 public slots:
     void stopProcess();

 protected:
     void run();

 private:
     bool m_abort;
     QImage m_image;
     QMutex mutex;
 };

 #endif