Método Marshal.GetITypeInfoForType (Type)

 

Devuelve una interfaz System.Runtime.InteropServices.ComTypes.ITypeInfo de un tipo administrado.

Espacio de nombres:   System.Runtime.InteropServices
Ensamblado:  mscorlib (en mscorlib.dll)

Sintaxis

[SecurityCriticalAttribute]
public static IntPtr GetITypeInfoForType(
    Type t
)

public:
[SecurityCriticalAttribute]
static IntPtr GetITypeInfoForType(
    Type^ t
)

[<SecurityCriticalAttribute>]
static member GetITypeInfoForType : 
        t:Type -> nativeint

<SecurityCriticalAttribute>
Public Shared Function GetITypeInfoForType (
    t As Type
) As IntPtr

Parámetros

• t
  Type: System.Type

  Tipo cuya interfaz ITypeInfo se está solicitando.

Valor devuelto

Type: System.IntPtr

Puntero a la interfaz ITypeInfo para el parámetro t.

Excepciones

Exception	Condition
ArgumentException	t no es un tipo visible para COM. O bien t es un tipo Windows en tiempo de ejecución.
COMException	Se registra una biblioteca de tipos para el ensamblado que contiene el tipo, pero no se encuentra la definición de tipo.

Comentarios

This method returns a pointer to an ITypeInfo implementation that is based on the original type. Calling an object with M:System.Runtime.InteropServices.Marshal.GetITypeInfoForType(System.Type) causes the reference count to increment on the interface pointer before the pointer is returned. Always use M:System.Runtime.InteropServices.Marshal.Release(System.IntPtr) to decrement the reference count once you have finished with the pointer. You can apply the T:System.Runtime.InteropServices.MarshalAsAttribute to replace standard interop marshaling behavior with this custom marshaler.

Ejemplos

The following example demonstrates how to retrieve a pointer to the ITypeInfo interface for a type using the M:System.Runtime.InteropServices.Marshal.GetITypeInfoForType(System.Type) method.

using System;
using System.Runtime.InteropServices;

class Program
{

    static void Run()
    {
        Console.WriteLine("Calling Marshal.GetITypeInfoForType...");

        // Get the ITypeInfo pointer for an Object type
        IntPtr pointer = Marshal.GetITypeInfoForType(typeof(object));

        Console.WriteLine("Calling Marshal.Release...");

        // Always call Marshal.Release to decrement the reference count.
        Marshal.Release(pointer);
    }

    static void Main(string[] args)
    {
        Run();
    }
}

Imports System.Runtime.InteropServices

Module Program


    Sub Run()

        ' Dim a pointer
        Dim pointer As IntPtr

        Console.WriteLine("Calling Marshal.GetIUnknownForObjectInContext...")

        ' Get the ITypeInfo pointer for an Object type
        pointer = Marshal.GetITypeInfoForType(Type.GetType("System.Object"))

        Console.WriteLine("Calling Marshal.Release...")

        ' Always call Marshal.Release to decrement the reference count.
        Marshal.Release(pointer)



    End Sub

    Sub Main(ByVal args() As String)

        Run()

    End Sub

End Module

Seguridad

SecurityCriticalAttribute

requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Información de versión

.NET Framework
Disponible desde 1.1

Ver también

GetTypeForITypeInfo
MarshalAsAttribute
Clase Marshal
Espacio de nombres System.Runtime.InteropServices

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