m_parent->DoAddChild( this );
 
         PostCreation(size);
-        SetBestSize(size);
+        SetInitialSize(size);
     }
     else
         return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
         m_parent->DoAddChild( this );
 
         PostCreation(size);
-        SetBestSize(size);
+        SetInitialSize(size);
     }
     else
         return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,