60     void SetValue(int value);
  61     void SetLineIncrement(int value) { m_lineIncr = value; }
  62     void SetPageIncrement(int value) { m_pageIncr = value; }
  63 
  64     virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
  65 
  66     /*
  67      * Windows message handler functions
  68      */
  69     virtual MsgRouting WmHScroll(UINT scrollCode, UINT pos, HWND hScrollBar);
  70     virtual MsgRouting WmVScroll(UINT scrollCode, UINT pos, HWND hScrollBar);
  71 
  72     // Prevent KB Q102552 race.
  73     virtual MsgRouting WmMouseDown(UINT flags, int x, int y, int button);
  74     virtual MsgRouting WmNcHitTest(UINT x, UINT y, LRESULT& retVal);
  75 
  76     virtual MsgRouting HandleEvent(MSG *msg, BOOL synthetic);
  77 
  78     INLINE virtual BOOL IsScrollbar() { return TRUE; }
  79 


  80     // invoked on Toolkit thread
  81     static void _SetValues(void *param);
  82 
  83 private:
  84     UINT          m_orientation; /* SB_HORZ or SB_VERT */
  85 
  86     int           m_lineIncr;
  87     int           m_pageIncr;
  88 
  89     // Work around KB Q73839 bug.
  90     void UpdateFocusIndicator();
  91 
  92     // Don't do redundant callbacks.
  93     const char *m_prevCallback;
  94     int m_prevCallbackPos;
  95 
  96     static const char * const SbNlineDown;
  97     static const char * const SbNlineUp;
  98     static const char * const SbNpageDown;
  99     static const char * const SbNpageUp;

  60     void SetValue(int value);
  61     void SetLineIncrement(int value) { m_lineIncr = value; }
  62     void SetPageIncrement(int value) { m_pageIncr = value; }
  63 
  64     virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
  65 
  66     /*
  67      * Windows message handler functions
  68      */
  69     virtual MsgRouting WmHScroll(UINT scrollCode, UINT pos, HWND hScrollBar);
  70     virtual MsgRouting WmVScroll(UINT scrollCode, UINT pos, HWND hScrollBar);
  71 
  72     // Prevent KB Q102552 race.
  73     virtual MsgRouting WmMouseDown(UINT flags, int x, int y, int button);
  74     virtual MsgRouting WmNcHitTest(UINT x, UINT y, LRESULT& retVal);
  75 
  76     virtual MsgRouting HandleEvent(MSG *msg, BOOL synthetic);
  77 
  78     INLINE virtual BOOL IsScrollbar() { return TRUE; }
  79 
  80     static void _SetLineIncrement(void *param);
  81     static void _SetPageIncrement(void *param);
  82     // invoked on Toolkit thread
  83     static void _SetValues(void *param);
  84 
  85 private:
  86     UINT          m_orientation; /* SB_HORZ or SB_VERT */
  87 
  88     int           m_lineIncr;
  89     int           m_pageIncr;
  90 
  91     // Work around KB Q73839 bug.
  92     void UpdateFocusIndicator();
  93 
  94     // Don't do redundant callbacks.
  95     const char *m_prevCallback;
  96     int m_prevCallbackPos;
  97 
  98     static const char * const SbNlineDown;
  99     static const char * const SbNlineUp;
 100     static const char * const SbNpageDown;
 101     static const char * const SbNpageUp;