// IDispose
public void Dispose()
{
// we may have recicular COM references to itself
// e.g., via _baseIComInterface
// make sure to release all references
if (_baseIComInterface != null)
{
Marshal.ReleaseComObject(_baseIComInterface);
_baseIComInterface = null;
}
if (_baseClassComProxy != null)
{
_baseClassComProxy.Dispose();
_baseClassComProxy = null;
}
}
// constructor
public ImprovedClass()
{
// get OldLibrary.BaseClass.IComInterface via reflection
var typeBaseIComInterface = typeof(OldLibrary.BaseClass).GetInterfaces().First((t) =>
t.GUID == typeof(NewLibrary.IComInterface).GUID);
// get the COM interface for OldLibrary.BaseClass.IComInterface
_unkBaseIComInterface = Marshal.GetComInterfaceForObject(this, typeBaseIComInterface, CustomQueryInterfaceMode.Ignore);
Marshal.AddRef(_unkBaseIComInterface); // protect _unkBaseIComInterface
// aggregate it with a helper Inner object
_inner = new Inner(_unkBaseIComInterface);
_unkInnerAggregated = Marshal.CreateAggregatedObject(_unkBaseIComInterface, _inner);
// turn private OldLibrary.BaseClass.IComInterface into NewLibrary.IComInterface
_baseIComInterface = (IComInterface)Marshal.GetTypedObjectForIUnknown(_unkInnerAggregated, typeof(NewLibrary.IComInterface));
Marshal.Release(_unkBaseIComInterface);
}
public void Dispose()
{
// we may have recicular references to itself
_baseIComInterface = null;
if (_inner != null)
{
_inner.Dispose();
_inner = null;
}
if (_unkInnerAggregated != IntPtr.Zero)
{
Marshal.Release(_unkInnerAggregated);
_unkInnerAggregated = IntPtr.Zero;
}
if (_unkBaseIComInterface != IntPtr.Zero)
{
Marshal.Release(_unkBaseIComInterface);
_unkBaseIComInterface = IntPtr.Zero;
}
}
// constructor
public ImprovedClass()
{
// aggregate the CCW object with the helper Inner object
_baseClassComProxy = new BaseClassComProxy(this);
_baseIComInterface = _baseClassComProxy.GetComInterface <IComInterface>();
}
