TypeLibFuncAttribute Class

Definition

Namespace:

System.Runtime.InteropServices

Assembly:

System.Runtime.InteropServices.dll

Source:

TypeLibFuncAttribute.cs

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

[<System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)>]
type TypeLibFuncAttribute = class
    inherit Attribute

Public NotInheritable Class TypeLibFuncAttribute
Inherits Attribute

Inheritance

Object

Attribute

TypeLibFuncAttribute

Attributes

AttributeUsageAttribute

Examples

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
{
private:
   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.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

Remarks

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.

Constructors

TypeLibFuncAttribute(Int16)	Initializes a new instance of the TypeLibFuncAttribute class with the specified TypeLibFuncFlags value.
TypeLibFuncAttribute(TypeLibFuncFlags)	Initializes a new instance of the TypeLibFuncAttribute class with the specified TypeLibFuncFlags value.

Properties

TypeId	When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute)
Value	Gets the TypeLibFuncFlags value for this method.

Methods

Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute)
GetHashCode()	Returns the hash code for this instance. (Inherited from Attribute)
GetType()	Gets the Type of the current instance. (Inherited from Object)
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)
Match(Object)	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• Tlbimp.exe (Type Library Importer)