private static Exception GetExceptionForHR(int hr, bool useGlobalErrorState, out bool restoredExceptionFromGlobalState)
{
restoredExceptionFromGlobalState = false;
if (hr >= 0)
{
return(null);
}
ObjectReference <ABI.WinRT.Interop.IErrorInfo.Vftbl> iErrorInfo = null;
IObjectReference restrictedErrorInfoToSave = null;
Exception ex;
string description = null;
string restrictedError = null;
string restrictedErrorReference = null;
string restrictedCapabilitySid = null;
bool hasOtherLanguageException = false;
if (useGlobalErrorState && getRestrictedErrorInfo != null)
{
Marshal.ThrowExceptionForHR(getRestrictedErrorInfo(out IntPtr restrictedErrorInfoPtr));
if (restrictedErrorInfoPtr != IntPtr.Zero)
{
IObjectReference restrictedErrorInfoRef = ObjectReference <ABI.WinRT.Interop.IRestrictedErrorInfo.Vftbl> .Attach(ref restrictedErrorInfoPtr);
restrictedErrorInfoToSave = restrictedErrorInfoRef.As <ABI.WinRT.Interop.IRestrictedErrorInfo.Vftbl>();
ABI.WinRT.Interop.IRestrictedErrorInfo restrictedErrorInfo = new ABI.WinRT.Interop.IRestrictedErrorInfo(restrictedErrorInfoRef);
restrictedErrorInfo.GetErrorDetails(out description, out int hrLocal, out restrictedError, out restrictedCapabilitySid);
restrictedErrorReference = restrictedErrorInfo.GetReference();
if (restrictedErrorInfoRef.TryAs <ABI.WinRT.Interop.ILanguageExceptionErrorInfo.Vftbl>(out var languageErrorInfoRef) >= 0)
{
ILanguageExceptionErrorInfo languageErrorInfo = new ABI.WinRT.Interop.ILanguageExceptionErrorInfo(languageErrorInfoRef);
using IObjectReference languageException = languageErrorInfo.GetLanguageException();
if (languageException is object)
{
if (languageException.IsReferenceToManagedObject)
{
ex = ComWrappersSupport.FindObject <Exception>(languageException.ThisPtr);
if (GetHRForException(ex) == hr)
{
restoredExceptionFromGlobalState = true;
return(ex);
}
}
else
{
hasOtherLanguageException = true;
}
}
}
else
{
if (hr == hrLocal)
{
restrictedErrorInfoRef.TryAs <ABI.WinRT.Interop.IErrorInfo.Vftbl>(out iErrorInfo);
}
}
}
}
public SingleInterfaceOptimizedObject(Type type, IObjectReference objRef)
{
_type = type;
Type helperType = type.FindHelperType();
var vftblType = helperType.FindVftblType();
if (vftblType is null)
{
_obj = objRef.As <IUnknownVftbl>(GuidGenerator.GetIID(helperType));
}
else
{
_obj = (IObjectReference)typeof(IObjectReference).GetMethod("As", Type.EmptyTypes).MakeGenericMethod(vftblType).Invoke(objRef, null);
}
}
