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  1. andrey.b
    Hello everybody, I'm a novice with the OTL. And I've written a simple app to experiment with it. But it causes the EOSError with the "System Error. Code: 1400. Invalid window handle." message in the TOmniContainerWindowsMessageObserverImpl.PostWithRetry method. Could anybody explain what is wrong with my code and (if it is not correct) provide a fix or solution? I use Delphi 10.2.3 (Tokyo) and OTL 3.07.9. Any help is appreciated. This is my code: unit Unit1; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls; type TForm1 = class(TForm) procedure FormCreate(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation uses OtlParallel; {$R *.dfm} procedure TForm1.FormCreate(Sender: TObject); begin TThread.CreateAnonymousThread( procedure begin Parallel.Async( procedure begin Sleep(100); end); end).Start; end; end.
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