The AnnAutomation can display the object properties dialog if there is a AnnObject or more that is currently being edited (in other words, the CurrentDesigner is an object of the AnnEditDesigner class). You can get the current selected object through the CurrentEditObject property.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2