Type.StructLayoutAttribute Propiedad

Definición

Obtiene una clase StructLayoutAttribute que describe el diseño del tipo actual.Gets a StructLayoutAttribute that describes the layout of the current type.

public:
 virtual property System::Runtime::InteropServices::StructLayoutAttribute ^ StructLayoutAttribute { System::Runtime::InteropServices::StructLayoutAttribute ^ get(); };
public virtual System.Runtime.InteropServices.StructLayoutAttribute? StructLayoutAttribute { get; }
public virtual System.Runtime.InteropServices.StructLayoutAttribute StructLayoutAttribute { get; }
member this.StructLayoutAttribute : System.Runtime.InteropServices.StructLayoutAttribute
Public Overridable ReadOnly Property StructLayoutAttribute As StructLayoutAttribute

Valor de propiedad

StructLayoutAttribute

Obtiene una clase StructLayoutAttribute que describe las características de diseño generales del tipo actual.Gets a StructLayoutAttribute that describes the gross layout features of the current type.

Excepciones

El método invocado no se admite en la clase base.The invoked method is not supported in the base class.

Ejemplos

En el ejemplo de código siguiente se define primero una clase, una estructura y una estructura con atributos de diseño especiales (las estructuras se anidan dentro de la clase).The following code example first defines a class, a structure, and a structure with special layout attributes (the structures are nested within the class). A continuación, en el ejemplo se usa la StructLayoutAttribute propiedad para obtener un StructLayoutAttribute para cada tipo y se muestran las propiedades de los atributos.The example then uses the StructLayoutAttribute property to obtain a StructLayoutAttribute for each type, and displays the properties of the attributes.

using namespace System;
using namespace System::Runtime::InteropServices;
value struct Test1
{
public:
   Byte B1;
   short S;
   Byte B2;
};


[StructLayout(LayoutKind::Explicit,Pack=1)]
value struct Test2
{
public:

   [FieldOffset(0)]
   Byte B1;

   [FieldOffset(1)]
   short S;

   [FieldOffset(3)]
   Byte B2;
};

static void DisplayLayoutAttribute( StructLayoutAttribute^ sla )
{
   Console::WriteLine( L"\r\nCharSet: {0}\r\n   Pack: {1}\r\n   Size: {2}\r\n  Value: {3}", sla->CharSet, sla->Pack, sla->Size, sla->Value );
}

int main()
{
   DisplayLayoutAttribute( Test1::typeid->StructLayoutAttribute );
   return 0;
}

using System;
using System.Runtime.InteropServices;

public class Example
{
    public static void Main()
    {
        DisplayLayoutAttribute(typeof(Example).StructLayoutAttribute);
        DisplayLayoutAttribute(typeof(Test1).StructLayoutAttribute);
        DisplayLayoutAttribute(typeof(Test2).StructLayoutAttribute);
    }

    private static void DisplayLayoutAttribute(StructLayoutAttribute sla)
    {
        Console.WriteLine("\r\nCharSet: "+sla.CharSet.ToString()+"\r\n   Pack: "+sla.Pack.ToString()+"\r\n   Size: "+sla.Size.ToString()+"\r\n  Value: "+sla.Value.ToString());
    }
    public struct Test1
    {
        public byte B1;
        public short S;
        public byte B2;
    }
    [StructLayout(LayoutKind.Explicit, Pack=1)] public struct Test2
    {
        [FieldOffset(0)] public byte B1;
        [FieldOffset(1)] public short S;
        [FieldOffset(3)] public byte B2;
    }
}
Imports System.Runtime.InteropServices

Public Class Example
    Public Shared Sub Main()
        DisplayLayoutAttribute(GetType(Example).StructLayoutAttribute)
        DisplayLayoutAttribute(GetType(Test1).StructLayoutAttribute)
        DisplayLayoutAttribute(GetType(Test2).StructLayoutAttribute)
    End Sub

    Private Shared Sub DisplayLayoutAttribute( _
        ByVal sla As StructLayoutAttribute)
        Console.WriteLine(vbCrLf & "CharSet: " & sla.CharSet.ToString() _
            & vbCrLf & "   Pack: " & sla.Pack.ToString() _
            & vbCrLf & "   Size: " & sla.Size.ToString() _
            & vbCrLf & "  Value: " & sla.Value.ToString())
    End Sub

    Public Structure Test1
        Public B1 As Byte
        Public S As Short
        Public B2 As Byte
    End Structure

    <StructLayout(LayoutKind.Explicit, Pack:=1)> _
    Public Structure Test2
        <FieldOffset(0)> Public B1 As Byte
        <FieldOffset(1)> Public S As Short
        <FieldOffset(3)> Public B2 As Byte
    End Structure
End Class

Comentarios

StructLayoutAttribute el método no devuelve GetCustomAttributes .StructLayoutAttribute is not returned by the GetCustomAttributes method. En su lugar, use esta propiedad para obtenerla.Instead, use this property to get it.

Se aplica a

Consulte también