performance fix by Tim Kosse

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55977 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/osx/carbon/textctrl.cpp b/src/osx/carbon/textctrl.cpp
index b30b691016d745eccc2aba48b0ae5788822fd617..570c242c106658e3495a3733038987e795ebe45c 100644 (file)
--- a/src/osx/carbon/textctrl.cpp
+++ b/src/osx/carbon/textctrl.cpp
@@ -1062,7 +1062,8 @@ void wxMacMLTEControl::TXNSetAttribute( const wxTextAttr& style , long from , lo
     if ( typeAttrCount > 0 )
     {
         verify_noerr( TXNSetTypeAttributes( m_txn , typeAttrCount, typeAttr, from , to ) );
-        relayout = true;
+        if (from != to)
+            relayout = true;
     }
 
     if ( tabs != NULL )