- SetRectRgn( childarea , child->m_x , child->m_y , child->m_x + child->m_width , child->m_y + child->m_height ) ;
- DiffRgn( ownUpdateRgn , childarea , ownUpdateRgn ) ;
+ if ( child->GetBackgroundColour() != m_backgroundColour && !child->IsKindOf( CLASSINFO( wxControl ) ) && ((wxControl*)child)->GetMacControl() )
+ {
+ SetRectRgn( childarea , child->m_x , child->m_y , child->m_x + child->m_width , child->m_y + child->m_height ) ;
+ DiffRgn( ownUpdateRgn , childarea , ownUpdateRgn ) ;
+ }