#include "wx/slider.h"
 #include "wx/os2/private.h"
 
-IMPLEMENT_DYNAMIC_CLASS(wxSlider, wxControl)
-
 wxSlider::wxSlider()
 {
     m_hStaticValue = 0L;
                                                  ,NULL                     // no control data
                                                  ,NULL                     // no Presentation parameters
                                                 );
-        if (GetFont().Ok())
+        if (GetFont().IsOk())
         {
             if (GetFont().GetResourceHandle())
             {
                                                                            )
                                                               );
     double                          dPixelToRange = (double)(nPixelRange - m_nThumbLength)/(double)(m_nRangeMax - m_nRangeMin);
-    int                             nNewPos = 0;
     int                             nPixelPos = SHORT1FROMMR(::WinSendMsg( GetHwnd()
                                                                           ,SLM_QUERYSLIDERINFO
                                                                           ,MPFROM2SHORT( SMA_SLIDERARMPOSITION
                                                                           ,(MPARAM)0
                                                                          )
                                                             );
-    nNewPos = (int)(nPixelPos/dPixelToRange);
+    int nNewPos = (int)(nPixelPos/dPixelToRange);
     if (nNewPos > (m_nRangeMax - m_nRangeMin)/2)
         nNewPos++;
     return nNewPos;
 } // end of wxSlider::SetTick
 
 // For trackbars only
-void wxSlider::SetTickFreq( int n, int WXUNUSED(nPos) )
+void wxSlider::DoSetTickFreq( int n )
 {
     SLDCDATA  vSlData;
     WNDPARAMS vWndParams;