Gets/sets the disallowed state. These are bit flags that specify the state that the control MUST NOT be in for this mapping to be active. If the current state of the control has any of these bits turned on this mapping will be ignored. In a derived class this property should be hidden by one that returns an appropriate flagged enum.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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
