Do nothing in ShowWindow(SW_SHOW) if a window is already visible.
[wine] / dlls / comctl32 / comctl_It.rc
2004-05-27  Ivan Leo PuotiChanged my name, so update copyright info.
2004-05-10  Maxime BellengéImplemented PSH_WIZARD97_OLD and PSH_WIZARD97_NEW prope...
2004-01-23  Huw DaviesThe tab control should be multiline.
2003-11-19  Ivan Leo Murray... Added/updated Italian resources.