+#if TARGET_RT_MAC_MACHO && defined(AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER)
+ if ( m_macUsesTXN )
+ {
+ Point current ;
+ Point desired ;
+ TXNOffset selstart , selend ;
+ TXNGetSelection( (TXNObject) m_macTXN , &selstart , &selend) ;
+ TXNOffsetToPoint( (TXNObject) m_macTXN, selstart , ¤t);
+ TXNOffsetToPoint( (TXNObject) m_macTXN, pos , &desired);
+ //TODO use HIPoints for 10.3 and above
+ if ( (UInt32) TXNScroll != (UInt32) kUnresolvedCFragSymbolAddress )
+ {
+ OSErr theErr = noErr;
+ SInt32 dv = desired.v - current.v ;
+ SInt32 dh = desired.h - current.h ;
+ TXNShowSelection( (TXNObject) m_macTXN , true ) ;
+ theErr = TXNScroll( (TXNObject) m_macTXN, kTXNScrollUnitsInPixels , kTXNScrollUnitsInPixels , &dv , &dh );
+ wxASSERT_MSG( theErr == noErr, _T("TXNScroll returned an error!") );
+ }
+ }
+#endif