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// Added to the source of the application var vFileStream : TFileStream; begin try vFileStream := TFileStream.Create( ExtractFilePath(Application.ExeName) + 'InUse.fil',fmCreate or fmShareExclusive); except MessageDlg('Program is already in use.', mtInformation, [mbOK], 0); Exit; end; Application.Initialize; ETC.... end;
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