Called by components to enter menu mode.
Assembly: PresentationCore (in PresentationCore.dll)
A component calls this method to enter the input manager’s menu mode. The menuSite gets privileged access to window messages. Calling this method causes the internal count of open menus to increment and sets the IsInMenuMode property to true, if this is the first menu to open.
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
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.