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Marshal.GetEndComSlot Method

Gets the last slot in the virtual function table (VTBL) of a type when exposed to COM.

[Visual Basic]
Public Shared Function GetEndComSlot( _
   ByVal t As Type _
) As Integer
public static int GetEndComSlot(
 Type t
public: static int GetEndComSlot(
 Type* t
public static function GetEndComSlot(
   t : Type
) : int;


A Type representing an interface or class.

Return Value

The last VTBL (also called v-table) slot of the interface when exposed to COM. If the t parameter is a class, the returned VTBL slot is the last slot in the interface that is generated from the class.


This method returns the zero-based, v-table number for an interface or a class. When used on a class, the slot number returned refers to the class interface for the class. If the class interface is auto-dual, this method always returns -1 to indicate that the dispatch-only interface does not expose a v-table to managed clients. You can use GetEndComSlot and Marshal.GetStartComSlot in conjunction with Marshal.GetMethodInfoForComSlot to pass slots within a specified range. For additional information on class interfaces, see Introducing the Class Interface.

Note   This method uses SecurityAction.LinkDemand to prevent it from being called from untrusted code; only the immediate caller is required to have SecurityPermissionAttribute.UnmanagedCode permission. If your code can be called from partially trusted code, do not pass user input to Marshal class methods without validation. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

.NET Framework Security: 

See Also

Marshal Class | Marshal Members | System.Runtime.InteropServices Namespace | Marshal.GetStartComSlot | Marshal.GetMethodInfoForComSlot