Delphi 7 Io Error 103
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Delphi Io Error 32
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack io error 103 windows 7 Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Delphi: Why do I sometimes get an I/O Error 103 with this
I/o Error 103 Windows 7
code? up vote 10 down vote favorite 4 In several of my apps I have code similar to the following: if ForceDirectories(ExtractFilePath(lLogName)) then begin AssignFile(lLog, lLogName); try if FileExists(lLogName) then Append(lLog) else Rewrite(lLog); Writeln(lLog, lLogLine); finally {$I-}CloseFile(lLog);{$I+} end; end; In one application, the first time I try to execute this I consistently get an I/O Error 103 exception on the line with the Append statement (the file does exist i/o error 103 realterm prior to calling this). All subsequent attempts at the operation will work fine however - until I restart the app. All the docs I found about this error so far indicated that this would either be caused by calling CloseFile without prior Reset or Rewrite (Append typically isn't mentioned) or if the file was in use by another process. As the exception occurs before the call to CloseFile it obviously couldn't be the former. I already tried inserting a Reset right after the AssignFile for good measure but then I get the exception on that line. There is also no other application overtly accessing that file. I say "overtly" because I do have a slight suspicion that anti-virus (TrendMicro in my case) might be the cuplrit here (so maybe the file is in use). If that was indeed the problem, what would be the best way around it? Hard-coding an automatic retry does not really feel like a clean solution to me... Another case where I sometimes get the 103 error is this code, which I use to create an empty file (or more often to empty an existing file): AssignFile(lFile, AFileName); try Rewrite(lFile); finally CloseFile(lFile); end; In this case it's much harder to reprod
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What Does I/o Error 103 Mean
IO Error 103Tags:implementation, object pascal, programming language, tutorial Delphi IO Error 103
I/0 Error 103
July 28, 2012 No Comments delphi, I/O File, implementation, technical Similarly to [this], the multithreading in a project has also i/o error 103 screensaver caused the strange error, which is IO Error 103. It does not happen every time but randomly. I googled a bit and found this poston stackoverflow.And I started to look into the http://stackoverflow.com/questions/634587/delphi-why-do-i-sometimes-get-an-i-o-error-103-with-this-code Delphi code which has the File opening functions using Reset, AssignFile etc. Before, the following function will return the size of a given file.function getFileSizeInBytes(const fn: string): integer; var f: File of byte; begin Result := -1; if (FileExists(fn)) then begin try AssignFile(f, fn); Reset(f); Result := FileSize(f); https://helloacm.com/delphi-io-error-103/ finally CloseFile(f); end; end; end;function getFileSizeInBytes(const fn: string): integer; var f: File of byte; begin Result := -1; if (FileExists(fn)) then begin try AssignFile(f, fn); Reset(f); Result := FileSize(f); finally CloseFile(f); end; end; end;The problem occurred most readily when one logging operation swiftly followed another. The second operation would fail for the above reason. To solve the IO 103 error, using the IO directive {$I-} to suppress the exceptions and {$I+} to turn it on. The variable IOResult indicates that the IO operation is successful if it is zero. For example, the above code could be improved using the IOResult.function getFileSizeInBytes(const fn: string): integer; var f: File of byte; begin Result := -1; if (FileExists(fn)) then begin try {$I-} AssignFile(f, fn); Reset(f); {$I+} if (IOResult = 0) then begin Result := FileSize(f); end else begin Result := 0; end; f
to return a user-selected file name. I then use AssignFile() to get a file handle. Finally, I try to open the file with a Reset(). When the Reset function executes, it gives me and io error 103. The http://www.delphigroups.info/2/a0/520309.html Help for Reset doesn't even suggest that 103 is a result of an error with Reset. This http://embarcadero.newsgroups.archived.at/public.delphi.nativeapi/201003/1003033518.html is probably a common mistake. I'm new to Delphi, and would like to move up from VB usage. However, errors like this that make no sense discourage me. If I set a breakpoint at the AssignFile(), I can see that the filname is correct. it's only at the Reset() that it fails. I went through the bother to reset permissions on the parent directory of the file error 103 to be opened, but that was not the problem. I'm sure I'm making a common mistake. What might it be? Thanks for the help. Dale Seaburg Dave Nottag Delphi Developer Thu, 20 Nov 2003 09:48:14 GMT Re:IO Error 103 with Reset() Quote"Dale Seaburg" wrote: > I am using an OpenDialog to return a user-selected file name. I then > use AssignFile() to get a file handle. Finally, I try to open the file > with a Reset(). When the Reset function executes, it i/o error 103 gives me and io > error 103. The Help for Reset doesn't even suggest that 103 is a result > of an error with Reset. Please post the code, and *exactly* where the error occurs. Its possible that the error is the result of some other action. -- Dave Nottage Barry Kell Delphi Developer Thu, 20 Nov 2003 10:09:59 GMT Re:IO Error 103 with Reset() Quote"Dale Seaburg"
file ERROR 103 Subject: Windows 7 - Write to file ERROR 103 Posted by: Sumerset sumerset Date: Wed, 3 Mar 2010 Hello, I'm trying to write a component that logs the activity of an application. The code works fine in Windows XP and Windows Vista however when i run it in a Windows 7 pc i get a "I/O error 103". Does anyone have this problem and know how to solve it? I'm using Delphi2010 and the following code: Procedure Component.create begin SetCurrentDir(GetCurrentDir); if (not(DirectoryExists('Log'))) then begin CreateDir('Log'); end; SetCurrentDir(GetCurrentDir+'\LOG'); try AssignFile(pLog_file,Time.UTCtimestamp(time.localtoutc(Time.getnowtime))+'.txt'); except closefile(plog_file); end; end; Procedure Component.start; begin try rewrite(plog_file); writeln(plog_file ,utf8string('Log started')); pstate:=stateon; except closefile(plog_file); end; end;Replies Re: Windows 7 - Write to file ERROR 103 [Edit] posted by karl pritchett on Wed, 3 Mar 2010 Newsgroups.Archived.At is © Copyright 2009-2016, A B Cryer, All Rights Reserved.