I O Error 103 Delphi
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you
I O Error 103 Windows 7
might have Meta Discuss the workings and policies of this i/o error 103 realterm site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or what does i/o error 103 mean posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community
I/o Error 103 Windows
of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How do I solve I/O error 103 in delphi up vote 2 down vote favorite So Basically I'm in College in the UK (So that's school for Americans (17 years old)) and I have to
I/o Error 103 Screensaver
make a file handling project for my finals. I have done most of it but it's the login screen that is weighing me down a lot. What I want from the program to do is read the username and password and log the people in. There can be 2 different outputs. If you type in "Staff" in the username and "warwickschool2013" in the username, the program takes you to the "teacher" side of the program where they can add in new users. unit LoginScreen; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, jpeg, ExtCtrls; type TfrmLogin = class(TForm) lblWelcomeLogin: TLabel; edtPassword: TEdit; lblPassword: TLabel; btnLogin: TButton; btnClose: TButton; lblCounter: TLabel; lblAttempts: TLabel; Image1: TImage; edtUsername: TEdit; lblUserName: TLabel; procedure btnCloseClick(Sender: TObject); procedure btnLoginClick(Sender: TObject); private { Private declarations } public { Public declarations } end; var frmLogin: TfrmLogin; implementation uses MainMenu, TeachersMainMenu, ViewEditTheData, Globals_Unit; var LoginDataArray: array of TLoginData; counter: integer; Password, username : String; Count1,
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 i/0 error 103 operations... When using AssignFile and CloseFile, I am sometimes getting a 103 error (File is
Delphi Rewrite
not open). How can I check to see if, in fact, the file is open before the CloseFile call? MrBaseball34 View Public i/o error 103 windows xp Profile Visit 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 {$i-} command then http://stackoverflow.com/questions/22026948/how-do-i-solve-i-o-error-103-in-delphi check the ioresult for an error AssignFile(F, FileName); {$I-} Reset(F); {$I+} if IOResult = 0 then MessageDlg('File size in bytes: ' + IntToStr(FileSize(F)), mtInformation, [mbOk], 0) else MessageDlg('File access error', mtWarning, [mbOk], 0); vandub View Public Profile Send a private message to vandub Visit vandub's homepage! Find all posts by vandub #3 06-13-2002, 02:37 PM HTML Senior Member Join Date: Jan 2001 Posts: 2,977 RE: Prevent I/O Error 103 Hello, http://www.delphipages.com/forum/showthread.php?t=58954 This site has many examples on File I/O and uses IoResult(should return 0 if successfull) in few places in the snippets. http://homepages.borland.com/efg2lab/Library/Delphi/IO/FileIO.htm If perhaps you can post a snippet of your code that you think cuases the problem , that would help. :-) HTML View Public Profile Send a private message to HTML Visit HTML's homepage! Find all posts by HTML #4 06-13-2002, 10:35 PM PoseFant Senior Member Join Date: Jan 2001 Posts: 1,002 RE: Prevent I/O Error 103 you could use the {$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 MrBas
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 http://docwiki.embarcadero.com/RADStudio/Seattle/en/Input-Output_Errors 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, error 103 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 o error 103 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