TypeLibFuncAttribute Class


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

public ref class TypeLibFuncAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)]
public sealed class TypeLibFuncAttribute : Attribute
type TypeLibFuncAttribute = class
    inherit Attribute
Public NotInheritable Class TypeLibFuncAttribute
Inherits Attribute


The following example demonstrates how to get the TypeLibFuncAttribute value of a method.

using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;

ref class ClassC
   static bool IsHiddenMethod( MethodInfo^ mi )
      array<Object^>^MethodAttributes = mi->GetCustomAttributes( TypeLibFuncAttribute::typeid, true );
      if ( MethodAttributes->Length > 0 )
         TypeLibFuncAttribute^ tlf = dynamic_cast<TypeLibFuncAttribute^>(MethodAttributes[ 0 ]);
         TypeLibFuncFlags flags = tlf->Value;
         return (flags & TypeLibFuncFlags::FHidden) != (TypeLibFuncFlags)0;

      return false;

using System;
using System.Reflection;
using System.Runtime.InteropServices;

namespace C
    class ClassC	
        public static bool IsHiddenMethod( MethodInfo mi )
            object[] MethodAttributes = mi.GetCustomAttributes( typeof( TypeLibFuncAttribute ), true);
            if( MethodAttributes.Length > 0 )
                TypeLibFuncAttribute tlf = ( TypeLibFuncAttribute )MethodAttributes[0];
                TypeLibFuncFlags  flags = tlf.Value;
                return ( flags & TypeLibFuncFlags.FHidden ) != 0; 
            return false;
Imports System.Reflection
Imports System.Runtime.InteropServices

Module C
    Public Function IsHiddenMethod(ByVal mi As MethodInfo) As Boolean
        Dim MethodAttributes As Object() = mi.GetCustomAttributes(GetType(TypeLibFuncAttribute), True)

        If MethodAttributes.Length > 0 Then
            Dim tlf As TypeLibFuncAttribute = MethodAttributes(0)
            Dim flags As TypeLibFuncFlags = tlf.Value
            Return (flags & TypeLibFuncFlags.FHidden) > 0
        End If
        Return False
    End Function
End Module


The Tlbimp.exe (Type Library Importer) applies this attribute to methods.

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



Initializes a new instance of the TypeLibFuncAttribute class with the specified TypeLibFuncFlags value.


Initializes a new instance of the TypeLibFuncAttribute class with the specified TypeLibFuncFlags value.



When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)

Gets the TypeLibFuncFlags value for this method.



Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)

Returns the hash code for this instance.

(Inherited from Attribute)

Gets the Type of the current instance.

(Inherited from Object)

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)

Creates a shallow copy of the current Object.

(Inherited from Object)

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)

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

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Applies to

See also