Remy Lebeau

Why is GetFileAttributes the way old-timers test file existence?

And even that is not needed if you use CreateProcessElevated() instead.

Your TIdHTTP code is all wrong for this kind of POST request. Try something more like this instead: uses ..., IdGlobalProtocols, IdHTTP, IdSSLOpenSSL; procedure TForm3.Button2Click(Sender: TObject); var SoapMsg: string; PostData, ResponseData: TStream; begin // buid up this string however you want (XML library, etc) ... SoapMsg := '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org/">' + ' <soapenv:Header/>' + ' <soapenv:Body>' + ' <tem:Consulta>' + ' <!--Optional:-->' + ' <tem:expresionImpresa><![CDATA[?re=LSO1306189R5&rr=GACJ940911ASA&tt=4999.99&id=e7df3047-f8de-425d-b469-37abe5b4dabb]]></tem:expresionImpresa>' + ' </tem:Consulta>' + ' </soapenv:Body>' + '</soapenv:Envelope>'; ResponseData := TMemoryStream.Create; try PostData := TStringStream.Create(SoapMsg, TEncoding.UTF8); try IdHTTP1.IOHandler := IdSSLIOHandlerSocketOpenSSL1; IdHTTP1.HTTPOptions := IdHTTP1.HTTPOptions + [hoNoProtocolErrorException, hoWantProtocolErrorContent]; IdHTTP1.Request.ContentType := 'text/xml'; IdHTTP1.Request.Charset := 'utf-8'; IdHTTP1.Request.Accept := 'text/xml'; IdHTTP1.Request.CacheControl := 'no-cache'; IdHTTP1.Request.CustomHeaders.Values['SOAPAction'] := 'http://tempuri.org/IConsultaCFDIService/Consulta'; IdHTTP1.Post('https://consultaqr.facturaelectronica.sat.gob.mx/ConsultaCFDIService.svc?wsdl', PostData, ResponseData); finally PostData.Free; end; Memo1.Lines.BeginUpdate; try Memo1.Lines.Add(Format('Response Code: %d', [IdHTTP1.ResponseCode])); Memo1.Lines.Add(Format('Response Text: %s', [IdHTTP1.ResponseText])); ResponseData.Position := 0; ReadStringsAsCharset(ResponseData, Memo1.Lines, IdHTTP1.Response.Charset); finally Memo1.Lines.EndUpdate; end; finally ResponseData.Free; end; end;

Remember that a pointer-to-class-method, such as TWndMethod, is represented by the RTL's TMethod record, which contains 2 pointers - a pointer to an object instance, and a pointer to the method code. TValue.AsUInt64 fails for a TWndMethod value because TValue supports only conversions that the compiler natively supports implicitly, and you can't implicitly assign a TMethod to a UInt64 and vice versa. That also explains why the TValue.GetReferenceToRawData() approach works - it is just returning a raw pointer to the actual TControl.FWndMethod instance member, which is then dereferenced when being assigned to the local TWndMethod variable. So, no conversion occurs. Now, why TValue.AsType<TWndMethod> fails to compile, I don't know. Sounds like a bug.

The VCL has a GetParentForm() function in the Vcl.Forms unit for this very purpose.

I would probably take it a step further, to avoid repeatedly indexing into the array: var Idx: integer; Rec: ^TSomeRec; // [...] Idx := CountInMyArr; SetLength(MyArr, Idx + SomeDelta); Rec := @MyArr[Idx]; Rec.SomeField := SomeValue; // and repeated for each field in TSomeRec Inc(CountInMyArr);