Type.StructLayoutAttribute Propiedad

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

Obtiene una clase StructLayoutAttribute que describe las características de diseño generales del tipo actual.

Excepciones

Ejemplos

En el ejemplo de código siguiente se define primero una clase, una estructura y una estructura con atributos de diseño especiales (las estructuras están anidadas dentro de la clase ). 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.

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;
    }
}

open System.Runtime.InteropServices

type Example = class end

[<Struct>]
type Test1 = 
    val B1 : byte
    val S : int16
    val B2 : byte

[<Struct; StructLayout(LayoutKind.Explicit, Pack=1)>] 
type Test2 =
    [<FieldOffset 0>] val B1 : byte
    [<FieldOffset 1>] val S : int16
    [<FieldOffset 3>] val B2 : byte

let displayLayoutAttribute (sla: StructLayoutAttribute) =
    printfn $"\nCharSet: {sla}\n   Pack: {sla.Pack}\n   Size: {sla.Size}\n  Value: {sla.Value}"
displayLayoutAttribute typeof<Example>.StructLayoutAttribute
displayLayoutAttribute typeof<Test1>.StructLayoutAttribute
displayLayoutAttribute typeof<Test2>.StructLayoutAttribute

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 . En su lugar, use esta propiedad para obtenerla.

Se aplica a

Consulte también

• StructLayoutAttribute