TypeLibTypeAttribute Class
 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Contains the TYPEFLAGS that were originally imported for this type from the COM type library.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

SystemObject
   SystemAttribute
    System.Runtime.InteropServicesTypeLibTypeAttribute

[AttributeUsageAttribute(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum | AttributeTargets.Interface, 
	Inherited = false)]
[ComVisibleAttribute(true)]
public sealed class TypeLibTypeAttribute : Attribute
[AttributeUsageAttribute(AttributeTargets::Class | AttributeTargets::Struct | AttributeTargets::Enum | AttributeTargets::Interface, 
	Inherited = false)]
[ComVisibleAttribute(true)]
public ref class TypeLibTypeAttribute sealed : Attribute
[<Sealed>]
[<AttributeUsageAttribute(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum | AttributeTargets.Interface,
    Inherited = false)>]
[<ComVisibleAttribute(true)>]
type TypeLibTypeAttribute = 
    class
        inherit Attribute
    end
<AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Struct Or AttributeTargets.Enum Or AttributeTargets.Interface,
	Inherited := False)>
<ComVisibleAttribute(True)>
Public NotInheritable Class TypeLibTypeAttribute
	Inherits Attribute
NameDescription
System_CAPS_pubmethod TypeLibTypeAttribute

Initializes a new instance of the TypeLibTypeAttribute class with the specified TypeLibTypeFlags value.

System_CAPS_pubmethod TypeLibTypeAttribute

Initializes a new instance of the TypeLibTypeAttribute class with the specified System.Runtime.InteropServicesTypeLibTypeFlags value.

NameDescription
System_CAPS_pubproperty

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

System_CAPS_pubproperty
NameDescription
System_CAPS_pubmethod Equals

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethod GetHashCode

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethod GetType

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethod IsDefaultAttribute

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethod Match

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethod ToString

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetIDsOfNames

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfo

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfoCount

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeInvoke

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

The Tlbimp.exe (Type Library Importer) applies this attribute to classes or interfaces.

This attribute is applied when a type library is imported and should never be changed. It is only applied when the method's TYPEFLAGS evaluate to non-zero. The attribute is designed to be used by tools that need to know how the original TYPEFLAGS were set. The common language runtime does not use this attribute.

The following example demonstrates how to get the TypeLibTypeAttribute value of a class or interface.

using System;
using System.Runtime.InteropServices;

namespace B
{
	class ClassB	
	{
		public static bool IsHiddenInterface( Type InterfaceType )
		{
			object[] InterfaceAttributes = InterfaceType.GetCustomAttributes( typeof( TypeLibTypeAttribute ), false );
			if( InterfaceAttributes.Length > 0 )
			{
				TypeLibTypeAttribute tlt = ( TypeLibTypeAttribute ) InterfaceAttributes[0];
				TypeLibTypeFlags  flags = tlt.Value;
				return ( flags & TypeLibTypeFlags.FHidden ) != 0; 
			}
			return false;
		}
	}
}

Imports System
Imports System.Runtime.InteropServices

Module B
	Public Function IsHiddenInterface(ByVal InterfaceType As Type) As Boolean
		Dim InterfaceAttributes As Object() = _
		InterfaceType.GetCustomAttributes(GetType(TypeLibTypeAttribute), False)

		If InterfaceAttributes.Length > 0 Then
			Dim tlt As TypeLibTypeAttribute = InterfaceAttributes(0)
			Dim flags As TypeLibTypeFlags = tlt.Value
			Return (flags & TypeLibTypeFlags.FHidden) > 0
		End If

		Return False
	End Function
End Module
using namespace System;
using namespace System::Runtime::InteropServices;

ref class ClassB
{
private:
   static bool IsHiddenInterface( Type^ InterfaceType )
   {
      array<Object^>^InterfaceAttributes = InterfaceType->GetCustomAttributes( TypeLibTypeAttribute::typeid, false );
      if ( InterfaceAttributes->Length > 0 )
      {
         TypeLibTypeAttribute^ tlt = dynamic_cast<TypeLibTypeAttribute^>(InterfaceAttributes[ 0 ]);
         TypeLibTypeFlags flags = tlt->Value;
         return (flags & TypeLibTypeFlags::FHidden) != TypeLibTypeFlags(0);
      }

      return false;
   }
};
.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top