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LCIDConversionAttribute Class

Indicates that a method's unmanaged signature expects a locale identifier (LCID) parameter.

Namespace:  System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

[ComVisibleAttribute(true)]
[AttributeUsageAttribute(AttributeTargets::Method, Inherited = false)]
public ref class LCIDConversionAttribute sealed : public Attribute

You can apply this attribute to methods.

This attribute indicates that the marshaler should expect an LCID to be passed after the designated method argument. When calls are made from managed to unmanaged code, the marshaler supplies the LCID argument automatically.

The following example demonstrates different signature translations based on different values supplied to 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();
}

System::Object
  System::Attribute
    System.Runtime.InteropServices::LCIDConversionAttribute

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0

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