https://bugs.winehq.org/show_bug.cgi?id=56768
--- Comment #2 from KRosUser kyle.kcsoftwares@gmail.com --- Only with a Theme that affect checkboxes, such as Royalty as mentionned in https://jira.reactos.org/browse/CORE-16410 (eg : using specific image for checked/unchecked states) and BEFORE application of the commit that hides the mishandled NULL LPRECT... or with a sample app to be built calling GetThemePartSize with a NULL pRect