Delphi File Error 103
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I/o Error 103 Windows 7
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 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 i/o error 103 realterm 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, Count2 : integer; Temp: TLoginData; {$R *.dfm} procedure TfrmLogin.btnLoginClick(Sender: TObject); var SearchName : string[10]; SearchCode : string[3]; begin Password:=edtPassword.Text; UserName:=edtUserName.Text; btnclose.enabled:= true; if (Password = 'warwickschool2013') AND (Username = 'Staff') then begin edtPassword.text :=''; frmTeachersMainMenu.show; frmLogin.hide; counter:= 0; lblCounter.caption := IntToStr(Counter); end else begin assignfile (LoginDatafile,'C:\Users\NinjaBoffin\Desktop\Delphi\DataFiles\LoginData.txt'); reset (LoginDatafile); LoginDatacounter
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I/0 Error 103
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I/o Error 103 Screensaver
language, tutorial Delphi IO Error 103 July 28, 2012 No Comments delphi, I/O File, implementation, technical Similarly to [this], the multithreading in a project http://stackoverflow.com/questions/22026948/how-do-i-solve-i-o-error-103-in-delphi has also caused the strange error, which is IO Error 103. It does not happen every time but randomly. I googled a bit and found this poston stackoverflow.And I started to look into the Delphi code which has the File opening functions using Reset, AssignFile etc. Before, the https://helloacm.com/delphi-io-error-103/ following function will return the size of a given file.function getFileSizeInBytes(const fn: string): integer; var f: File of byte; begin Result := -1; if (FileExists(fn)) then begin try AssignFile(f, fn); Reset(f); Result := FileSize(f); finally CloseFile(f); end; end; end;function getFileSizeInBytes(const fn: string): integer; var f: File of byte; begin Result := -1; if (FileExists(fn)) then begin try AssignFile(f, fn); Reset(f); Result := FileSize(f); finally CloseFile(f); end; end; end;The problem occurred most readily when one logging operation swiftly followed another. The second operation would fail for the above reason. To solve the IO 103 error, using the IO directive {$I-} to suppress the exceptions and {$I+} to turn it on. The variable IOResult indicates that the IO operation is
ReWrite causes the error "I/O error 32 trying to open C:\Temp\Temp001.TXT". to pop into the memo box. Var FNbr: http://www.delphigroups.info/2/10/1004385.html integer; Const EditorPgmPath = 'C:\Program Files\Microsoft Office\Office10\winword.exe'; procedure TForm1.Button5Click(Sender: TObject); var F: https://groups.google.com/d/topic/borland.public.delphi.language.objectpascal/Z3vh_abYLs0 TextFile; stpath1, stpath2: string; iError: integer; begin Inc(FNbr); stPath2 := Format('C:\Temp\Temp%3.3D.TXT',[FNbr]); AssignFile(F,stpath2); {$I-} ReWrite(F); iError := IoResult; {$I+} If iError <>0 then Memo1.Lines.Add(Format ('I/O error %D tring to open %S.',[iError,stPath2])) // Ex: I/O error 32 trying to open C:\Temp\Temp002.TXT // Using "C:\>net helpmsg 32" gives // "The process cannot error 103 access the file because it is being // used by another process." else try{finally} WriteLn(F,'File Path = ' + stPath2); finally CloseFile(F); stpath1 := EditorPgmPath + ' ' + stpath2; iError := WinExec(PChar(stPath1),SW_SHOWNORMAL); if iError < 32 then Memo1.Lines. Add(Format('iError=#%D occurred.',[iError])); end{finally}; end; Wayne Niddery [TeamB] Delphi Developer 2006-03-04 05:30:49 AM Re: I/O error 103 John Luetich writes: Quote i/o error 103 Here's my code. the tables are Paradox but I don't think it makes any difference with tblzprntid do begin tmpprnt1 := fieldbyname('prntID').asInteger; tmpprnt2 := tmpprnt1 + 1; edit; fieldbyname('prntID').asInteger := tmpprnt2; post; end; With this code it is very possible for two computers (or even more) to get the same number and this would easily explain the error you are seeing. - Any number of computers could read the current value from the table before any have incremented and written back the new value. - therefore any number can end up writing back the same new value and attempting to use this to write the text file. - whoever launches Word first wins. Sticking with Paradox, you need to set Exclusive to true on the TTable and add calls to Open and Close the table in the above code. Wrap that in a try/except block and, in the case of an exception, wait a bit and try again. -- Wayne Niddery - Logic Fundamentals, Inc. (www.logicfundamentals.com) RADBooks: www.logicfundamentals.com/RADBooks.html "Democracy, without the guarantee of liberty, is merely a method of selecting tyrants
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