protected CallableCOMWrapper(CallableCOMWrapper toClone)
{
if (toClone._disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
Self = toClone.Self;
_unknownVTable = toClone._unknownVTable;
_library = toClone._library;
AddRef();
_library.AddRef();
}
private protected CallableCOMWrapper(RefCountedFreeLibrary library, ref Guid desiredInterface, IntPtr pUnknown)
{
_library = library;
_library.AddRef();
IUnknownVTable *tbl = *(IUnknownVTable **)pUnknown;
var queryInterface = (QueryInterfaceDelegate)Marshal.GetDelegateForFunctionPointer(tbl->QueryInterface, typeof(QueryInterfaceDelegate));
int hr = queryInterface(pUnknown, ref desiredInterface, out IntPtr pCorrectUnknown);
if (hr != 0)
{
GC.SuppressFinalize(this);
throw new InvalidOperationException();
}
var release = (ReleaseDelegate)Marshal.GetDelegateForFunctionPointer(tbl->Release, typeof(ReleaseDelegate));
int count = release(pUnknown);
Self = pCorrectUnknown;
_unknownVTable = *(IUnknownVTable **)pCorrectUnknown;
}
protected CallableCOMWrapper(RefCountedFreeLibrary library, ref Guid desiredInterface, IntPtr pUnknown)
{
_library = library;
_library.AddRef();
IUnknownVTable *tbl = *(IUnknownVTable **)pUnknown;
QueryInterfaceDelegate queryInterface = (QueryInterfaceDelegate)Marshal.GetDelegateForFunctionPointer(tbl->QueryInterface, typeof(QueryInterfaceDelegate));
int hr = queryInterface(pUnknown, ref desiredInterface, out IntPtr pCorrectUnknown);
if (hr != 0)
{
GC.SuppressFinalize(this);
throw new InvalidCastException($"{GetType().FullName}.QueryInterface({desiredInterface}) failed, hr=0x{hr:x}");
}
ReleaseDelegate release = (ReleaseDelegate)Marshal.GetDelegateForFunctionPointer(tbl->Release, typeof(ReleaseDelegate));
int count = release(pUnknown);
Self = pCorrectUnknown;
_unknownVTable = *(IUnknownVTable **)pCorrectUnknown;
}
