RealProxy.GetCOMIUnknown(Boolean) 方法

public:
 virtual IntPtr GetCOMIUnknown(bool fIsMarshalled);

public virtual IntPtr GetCOMIUnknown(bool fIsMarshalled);

[System.Security.SecurityCritical]
public virtual IntPtr GetCOMIUnknown(bool fIsMarshalled);

abstract member GetCOMIUnknown : bool -> nativeint
override this.GetCOMIUnknown : bool -> nativeint

[<System.Security.SecurityCritical>]
abstract member GetCOMIUnknown : bool -> nativeint
override this.GetCOMIUnknown : bool -> nativeint

Public Overridable Function GetCOMIUnknown (fIsMarshalled As Boolean) As IntPtr

參數

傳回

如果要求物件參考是為了透過 COM 和目前處理序中的 Unmanaged 物件進行通訊，則為 COM 可呼叫包裝函式的指標；如果要求物件參考是為了封送處理至遠端位置，則為快取或新產生的 IUnknown COM 介面指標。

屬性

SecurityCriticalAttribute

範例

[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

備註

如果要求 Proxy 進行封送處理，則會 IUnknown 傳回目前 Proxy 實例所代表對象的介面。 IUnknown如果 先前由 SetCOMIUnknown 方法快取 ，則會傳回該實例，否則會傳回新的實例。

如果 Proxy 未要求封送處理，但用於與目前進程中 Unmanaged 對象的通訊，則會傳回 COM 可呼叫包裝函 式 (CCW) ，此程式可用於透過 COM 進行通訊的目前程式。