RealProxy.SupportsInterface(Guid) Method

Reference

Definition

Namespace:: System.Runtime.Remoting.Proxies

Assembly:: mscorlib.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Requests a COM interface with the specified ID.

public:
 virtual IntPtr SupportsInterface(Guid % iid);

public virtual IntPtr SupportsInterface (ref Guid iid);

abstract member SupportsInterface : Guid -> nativeint
override this.SupportsInterface : Guid -> nativeint

Public Overridable Function SupportsInterface (ByRef iid As Guid) As IntPtr

Parameters

iid: Guid

A reference to the requested interface.

Returns

IntPtr

nativeint

A pointer to the requested interface.

Examples

[SecurityPermission(SecurityAction::LinkDemand, Flags = SecurityPermissionFlag::Infrastructure)]
IntPtr SupportsInterface( Guid * /*myGuid*/ )
{
   Console::WriteLine( "SupportsInterface method called" );
   
   // Object reference is requested for communication with unmanaged objects
   // in the current process through COM.
   IntPtr myIntPtr = this->GetCOMIUnknown( false );
   
   // Stores an unmanaged proxy of the object.
   this->SetCOMIUnknown( myIntPtr );
   
   // return COM Runtime Wrapper pointer.
   return myIntPtr;
}

public override IntPtr SupportsInterface(ref Guid myGuid)
{
    Console.WriteLine("SupportsInterface method called");
    // Object reference is requested for communication with unmanaged objects
    // in the current process through COM.
    IntPtr myIntPtr = this.GetCOMIUnknown(false);
    // Stores an unmanaged proxy of the object.
    this.SetCOMIUnknown(myIntPtr);
    // return COM Runtime Wrapper pointer.
    return myIntPtr;
}

<SecurityPermission(SecurityAction.LinkDemand, Flags := SecurityPermissionFlag.Infrastructure)> _
Public Overrides Function SupportsInterface(ByRef myGuid As Guid) As IntPtr
   Console.WriteLine("SupportsInterface method called")
   ' Object reference is requested for communication with unmanaged objects
   ' in the current process through COM.
   Dim myIntPtr As IntPtr = Me.GetCOMIUnknown(False)
   ' Stores an unmanaged proxy of the object.
   Me.SetCOMIUnknown(myIntPtr)
   ' return COM Runtime Wrapper pointer.
   Return myIntPtr
End Function 'SupportsInterface

Remarks

The SupportsInterface method allows the current proxy instance to implement additional COM interfaces on behalf of the server object that the current instance represents. The current method generates the requested interface and returns a pointer to it. The types of COM interfaces that can be generated by this method depend on the proxy type, which in turn might depend on the type of the server object that the current proxy instance represents.

For more information, see ProxyAttribute.

Applies to

Deila með