if ( (m_windowStyle & wxMINIMIZE_BOX) && ms_canIconize )
style |= wxTOPLEVEL_BUTTON_ICONIZE;
if ( m_windowStyle & wxMAXIMIZE_BOX )
if ( (m_windowStyle & wxMINIMIZE_BOX) && ms_canIconize )
style |= wxTOPLEVEL_BUTTON_ICONIZE;
if ( m_windowStyle & wxMAXIMIZE_BOX )