Error I/o 103 Delphi
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I/o Error 103 Windows 7
Join them; it only takes a minute: Sign up Delphi: Why do I sometimes get an I/O Error 103 with this code? up vote 10 down vote favorite 4 In several of my apps I have code similar to
I/o Error 103 Realterm
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 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 what does i/o error 103 mean 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 reproduce. It happens a lot less often. Most of the time this seems to happen on the first run after I recompiled the application. Could this again be the anti-virus getting in the way? I have only ever seen this happen on my development machine and never gotten a report from a customer. As w
Search Advanced Search Go to Page... Thread Tools Display Modes #1 06-13-2002, 02:11 PM MrBaseball34 Senior Member Join Date: Jan 2001 Posts: 7,260 Prevent I/O Error 103 Not used to Std. I/O operations... When
I/o Error 103 Screensaver
using AssignFile and CloseFile, I am sometimes getting a 103 error (File is not open). i/0 error 103 How can I check to see if, in fact, the file is open before the CloseFile call? MrBaseball34 View Public Profile Visit rewrite delphi MrBaseball34's homepage! Find all posts by MrBaseball34 #2 06-13-2002, 02:37 PM vandub Member Join Date: Aug 2001 Posts: 44 RE: Prevent I/O Error 103 you could use the {$i-} command then check the ioresult http://stackoverflow.com/questions/634587/delphi-why-do-i-sometimes-get-an-i-o-error-103-with-this-code for an error AssignFile(F, FileName); {$I-} Reset(F); {$I+} if IOResult = 0 then MessageDlg('File size in bytes: ' + IntToStr(FileSize(F)), mtInformation, [mbOk], 0) else MessageDlg('File access error', mtWarning, [mbOk], 0); vandub View Public Profile Send a private message to vandub Visit vandub's homepage! Find all posts by vandub #3 06-13-2002, 02:37 PM HTML Senior Member Join Date: Jan 2001 Posts: 2,977 RE: Prevent I/O Error 103 Hello, This site has many examples http://www.delphipages.com/forum/showthread.php?t=58954 on File I/O and uses IoResult(should return 0 if successfull) in few places in the snippets. http://homepages.borland.com/efg2lab/Library/Delphi/IO/FileIO.htm If perhaps you can post a snippet of your code that you think cuases the problem , that would help. :-) HTML View Public Profile Send a private message to HTML Visit HTML's homepage! Find all posts by HTML #4 06-13-2002, 10:35 PM PoseFant Senior Member Join Date: Jan 2001 Posts: 1,002 RE: Prevent I/O Error 103 you could use the {$i-} command then check the ioresult for an error AssignFile(F, FileName); {$I-} Reset(F); {$I+} if IOResult = 0 then MessageDlg('File size in bytes: ' + IntToStr(FileSize(F)), mtInformation, [mbOk], 0) else MessageDlg('File access error', mtWarning, [mbOk], 0); --- Regards /Filip I've lost my autosignature ... *sobbing* ... PoseFant View Public Profile Send a private message to PoseFant Visit PoseFant's homepage! Find all posts by PoseFant #5 06-14-2002, 05:34 AM MrBaseball34 Senior Member Join Date: Jan 2001 Posts: 7,260 RE: Prevent I/O Error 103 Hey, Filip, did you just simply copy vandub's post verbatim? Anyway... I want to know how to determine if the file is open before I call FileClose. If I use Reset, what will happen to the file if it IS open? MrBaseball34 View Public Profile Visit MrBaseball34's homepage! Find all posts by MrBaseball34 #6 06-
can i solve I/O error 103 on the compiler. CCS Forum Index -> General CCS C Discussion View previous topic :: View https://www.ccsinfo.com/forum/viewtopic.php?t=44479 next topic Author Message juansebmxJoined: 17 Jan 2011Posts: 1 How can i http://docwiki.embarcadero.com/RADStudio/Seattle/en/Input-Output_Errors solve I/O error 103 on the compiler. Posted: Mon Jan 17, 2011 11:44 am I Had a problem when i try to compile a program, i already had try to compile the program with the other alternatives on the tab of compile, and it shows a window with the message o error of "I/O error 103". Can someone help me with this query, and thanks a lot for your commentaries related to this._________________Control, and Robotics. TtelmahJoined: 11 Mar 2010Posts: 10359 Posted: Mon Jan 17, 2011 3:26 pm I/O error, sounds odd. Are you sure you can write to the directories where the code is installed (the compiler needs to do this)?. In general the first thing i/o error 103 to do, is to re-install the compiler, from a clean download, and try a short one of the example programs. If this works, then move to your code. 'Error 103', normally means a numeric value is out of the allowed range (you get this if you try for example to use a switch statement with a value above 65535). Best Wishes PCM programmerJoined: 06 Sep 2003Posts: 19390 Posted: Mon Jan 17, 2011 3:59 pm It's a Delphi error code. CCS uses Delphi to write their Windows IDE program: http://www.ccsinfo.com/forum/viewtopic.php?t=36368 TtelmahJoined: 11 Mar 2010Posts: 10359 Posted: Tue Jan 18, 2011 3:02 am Which goes back to my thought about not being able to write to the directory. A Google on Delphi I/O error 103, suggests it is a common problem with networked drives. It also seems to happen if you have two copies of some programs open 'at once', with a semaphore then not being settable. Also, if the application was installed as 'super user', and then you try to run it, without write permissions. Best Wishes Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 YearOldest FirstNewest Firs
state. (If the application does not include the System.SysUtils unit, the exception causes the application to terminate). Handling I/O Errors In the {$I-} state, the program continues to execute, and the error is reported by the IOResult function. I/O Error List The following table lists all I/O errors, numbers, and descriptions. Number Name Description 100 Disk read error Reported by Read on a typed file if you attempt to read past the end of the file. 101 Disk write error Reported by CloseFile, Write, WriteIn, or Flush if the disk becomes full. 102 File not assigned Reported by Reset, Rewrite, Append, Rename, or Erase if the file variable has not been assigned a name through a call to Assign or AssignFile. 103 File not open Reported by CloseFile, Read Write, Seek, Eof, FilePos, FileSize, Flush, BlockRead, or BlockWrite if the file is not open. 104 File not open for input Reported by Read, Readln, Eof, Eoln, SeekEof, or SeekEoln on a text file if the file is not open for input. 105 File not open for output Reported by Write or Writeln on a text file if you do not generate a Console application. 106 Invalid numeric format Reported by Read or Readln if a numeric value read from a text file does not conform to the proper numeric format. See Also Exception Handling Resolving Internal Errors (Delphi) Delphi Runtime Errors Fatal errors Operating system errors Retrieved from "http://docwiki.embarcadero.com/RADStudio/Seattle/e/index.php?title=Input-Output_Errors&oldid=227166" Category: RAD Studio ReferenceHidden category: AMMigrate Views Page Discussion View source History Personal tools Create account Log in Search RAD Studio Seattle Seattle Examples and Samples Seattle Libraries Main Page - Seattle Topics Wiki What's New Tutorials FireMonkey Application Platform Multi-Device Applications Getting Started Steps in Developing a Project Key Application Types FireDAC Windows Developer's Guide Modeling Tools IDE Reference and Utilities Delphi Reference C++ Reference Subject Index HTML5 Builder Newer Versions Berlin Topics Previous Versions XE8 Topics XE7 Topics XE6 Topics XE5 Topics XE4 Topics XE3 Topics XE2 Topics XE Topics 2010 Topics In other languages Deutsch Français 日本語 Assistance Known Problems and Recent Fixes Random Page Recent changes Help Tools What links here Related changes Special pages Printable version Permanent link Page information This page was last modified on 28 May 2014, at 14:34. Privacy policy About RAD Studio Disclaimers Help Feedback (QP, email)