Hi everyone.I had to make a dll from my current source to use in C#.I did it with QAxfactory and Qt 4.8.6 and made a dll and used in C# but when I set target build to 64 bit in vs studio my C# program cannot start because my dll(that I have built from my qt source) was 32 bit.I compiled my qt program 64 bit and made 64 bit dll but when I want to add it as COM component(I register it with Regsvr32.exe) it gives me this error :Self registration for d:\.......dll faild.I compiled it with qt 5.2.1 and the result was the same.What should I do???
Qt Code: 
  1. #ifndef OBJECTS_H
  2. #define OBJECTS_H
  3.  
  4. #include <QWidget>
  5. #include <QColor>
  6. QT_BEGIN_NAMESPACE
  8. QT_END_NAMESPACE
  9. class QSubWidget;
  10. class CirclesGraphicsScene;
  11. class CirclesGraphicsView;
  12. //! [0]
  13. class Circles : public QWidget
  14. {
  15.     Q_OBJECT
  16.     Q_CLASSINFO("ClassID", "{d574a747-8016-46db-a07c-b2b4854ee75c}")
  17.     Q_CLASSINFO("InterfaceID", "{4a30719d-d9c2-4659-9d16-67378209f822}")
  18.     Q_CLASSINFO("EventsID", "{4a30719d-d9c2-4659-9d16-67378209f823}")
  19.     Q_PROPERTY(QColor backgroundColor READ backgroundColor WRITE setBackgroundColor)
  20.     Q_PROPERTY(int circleNumber READ circleNumber WRITE setCircleNumber)
  21.  
  22.     void createScene();
  23. public:
  24.     Circles(QWidget *parent = 0);
  25.  
  26.     QSize sizeHint() const;
  27.     QColor backgroundColor()const;
  28.     int circleNumber()const{return _n;}
  29.  
  30. public slots:
  31.  
  32. //--general
  33.     void setBackgroundColor(QColor color);
  34.     void setCircleNumber(int n);
  35.  
  36. //--axes
  37.     void setAxesPen(QColor color, int w , int penStyle);
  38.  
  39. //--circles
  40.     void addCircles(int r, int n, int s, int e);
  41.  
  42. ........//the rest
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