http://bugs.winehq.org/show_bug.cgi?id=10006
--- Comment #8 from Dmitry Timoshkov dmitry@codeweavers.com 2008-01-21 02:18:54 --- Wine policy is to add exported entry points to DLLs when there is a real world app that depends on it. Since there is no one, and there is no public doescription of LogoffWindowsDialog, the most you can do is just add a stub to shell32.spec based on the Geoff Chappell page.