In order to test what is going on I created a sample using only the TMS Office 2007 app wizard as well as the TAdvLockApp component. What happens is the sample app will lock and will minimize, but it does not minimize to the taskbar it minimizes to the desktop. (The Vista fixes I used in my app do make it minimize to the taskbar however). The sample D7 app taskbar preview continues to show the normal screen even while locked. (my app shows the proper "locked" screen in preview).
When restored my app continues to show the "locked" preview. The sample app shows the proper screen (which had never changed when locked)
If I want to handle the "Preview Screen" myself, what messages would I need to handle?