Hi all
If anyone is interested this is my solution of Q_EXPORT macro problem
Qt Code: 
  1. qfocusdata.h
  2.  
  3. #ifndef QFOCUSDATA_H
  4. #define QFOCUSDATA_H
  5.  
  6. #ifdef Q_WIN
  7.          #include <qwindowsystem_qws.h>
  8.          #ifdef  LIBAPP_EXPORTS
  9.                  #define LIBAPP_API __declspec(dllexport)
  10.          #else   // !LIBAPP_EXPORTS
  11.                  #define LIBAPP_API __declspec(dllimport)
  12.          #endif  // LIBAPP_EXPORTS
  13. #else
  14.          #define LIBAPP_API // Q_EXPORT = LIBAPP_API
  15. #endif
  16. // all You see hire is copy from Qt help pages;
  17. http://web.mit.edu/qt/www/qfocusdata-h.html
  18. and
  19. http://lists.trolltech.com/qt-interest/2004-12/thread00790-0.html
  20.  
  21. #ifndef QT_H
  22. #include <QWidgetList> // "qwidgetlist.h"
  23. #endif // QT_H
  24.  
  25.  
  26. class LIBAPP_API QFocusData {
  27. public:
  28.     //QWidget* focusWidget() const { return it.current(); }
  29.     // current is not supported by QWidget but it is up to You- i do not need it. 
  30.     QWidget* home();
  31.     QWidget* next();
  32.     QWidget* prev();
  33.     QWidget* first() const;
  34.     QWidget* last() const;
  35.     int count() const { return focusWidgets.count(); }
  36.  
  37. private:
  38.     friend class QWidget;
  39.     QFocusData() : it(focusWidgets) {}
  40.     QWidgetList	  focusWidgets;
  41.     QWidgetList it;
  42. };
  43.  
  44. #endif // QFOCUSDATA_H
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