LCIDConversionAttribute Clase

Definición

public ref class LCIDConversionAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)]
public sealed class LCIDConversionAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class LCIDConversionAttribute : Attribute

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

[<System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type LCIDConversionAttribute = class
    inherit Attribute

Public NotInheritable Class LCIDConversionAttribute
Inherits Attribute

Herencia

Object

Attribute

LCIDConversionAttribute

Atributos

AttributeUsageAttribute ComVisibleAttribute

Ejemplos

En el ejemplo siguiente se muestran diferentes traducciones de firmas basadas en valores diferentes proporcionados a LCIDConversionAttribute.

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

#define LCID_INSTALLED 1
#define LCID_SUPPORTED 2

ref class LCIDAttrSample
{
public:

   // Position of the LCID argument

   [DllImport("KERNEL32.DLL",EntryPoint="IsValidLocale",SetLastError=true,CharSet=CharSet::Auto)]
   [LCIDConversionAttribute(0)]
   static bool IsValidLocale( int dwFlags ); // options

   void CheckCurrentLCID()
   {
      MethodInfo^ mthIfo = this->GetType()->GetMethod( "IsValidLocale" );
      Attribute^ attr = Attribute::GetCustomAttribute( mthIfo, LCIDConversionAttribute::typeid );
      if ( attr != nullptr )
      {
         LCIDConversionAttribute^ lcidAttr = dynamic_cast<LCIDConversionAttribute^>(attr);
         Console::WriteLine( "Position of the LCID argument in the unmanaged signature: {0}", lcidAttr->Value );
      }

      bool res = IsValidLocale( LCID_INSTALLED );
      Console::WriteLine( "Result LCID_INSTALLED {0}", res );
      res = IsValidLocale( LCID_SUPPORTED );
      Console::WriteLine( "Result LCID_SUPPORTED {0}", res );
   }
};

int main()
{
   LCIDAttrSample^ smpl = gcnew LCIDAttrSample;
   smpl->CheckCurrentLCID();
}

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

class LCIDAttrSample
{
    private const int LCID_INSTALLED = 1;
    private const int LCID_SUPPORTED = 2;

    [DllImport("KERNEL32.DLL", EntryPoint="IsValidLocale", SetLastError = true, CharSet = CharSet.Auto)]
    [LCIDConversionAttribute(0)] // Position of the LCID argument
    public static extern bool IsValidLocale(
                                                uint dwFlags            // options
                                            );

    public void CheckCurrentLCID()
    {
        MethodInfo mthIfo = this.GetType().GetMethod("IsValidLocale");
        Attribute attr = Attribute.GetCustomAttribute(mthIfo,typeof(LCIDConversionAttribute));

        if( attr != null)
        {
            LCIDConversionAttribute lcidAttr = (LCIDConversionAttribute)attr;
            Console.WriteLine("Position of the LCID argument in the unmanaged signature: " + lcidAttr.Value.ToString());
        }

        bool res = IsValidLocale(LCID_INSTALLED);
        Console.WriteLine("Result LCID_INSTALLED " + res.ToString());
        res = IsValidLocale(LCID_SUPPORTED);
        Console.WriteLine("Result LCID_SUPPORTED " + res.ToString());
    }

    static void Main(string[] args)
    {
        LCIDAttrSample smpl = new LCIDAttrSample();
        smpl.CheckCurrentLCID();
    }
}

Imports System.Runtime.InteropServices
Imports System.Reflection

Class LCIDAttrSampler

    Const LCID_INSTALLED As Integer = 1
    Const LCID_SUPPORTED As Integer = 2

    <DllImport("KERNEL32.DLL", EntryPoint:="IsValidLocale", _
    SetLastError:=True, CharSet:=CharSet.Unicode, _
    CallingConvention:=CallingConvention.StdCall), _
    LCIDConversionAttribute(0)> _
    Public Shared Function IsValidLocale(ByVal dwFlags As Integer) As Boolean
    End Function

    Public Sub CheckCurrentLCID()
        Dim mthIfo As MethodInfo = Me.GetType().GetMethod("IsValidLocale")
        Dim attr As Attribute = Attribute.GetCustomAttribute(mthIfo, GetType(LCIDConversionAttribute))

        If Not(attr Is Nothing) Then
            Dim lcidAttr As LCIDConversionAttribute = CType(attr, LCIDConversionAttribute)
            Console.WriteLine("Position of the LCID argument in the unmanaged signature: " + lcidAttr.Value.ToString())
        End If

        Dim res As Boolean = IsValidLocale(LCID_INSTALLED)
        Console.WriteLine("Result LCID_INSTALLED " + res.ToString())
        res = IsValidLocale(LCID_SUPPORTED)
        Console.WriteLine("Result LCID_SUPPORTED " + res.ToString())
    End Sub

    Public Shared Sub Main()
        Dim smpl As LCIDAttrSampler = New LCIDAttrSampler()
        smpl.CheckCurrentLCID()
    End Sub

End Class

Comentarios

Puede aplicar este atributo a métodos.

Este atributo indica que el serializador debe esperar que se pase un LCID después del argumento del método designado. Cuando se realizan llamadas desde código administrado a no administrado, el serializador proporciona automáticamente el argumento LCID.

Constructores

Propiedades

Métodos

Implementaciones de interfaz explícitas

Se aplica a