Io Error 6
16bit Delphi but it gives me I/O error 6 under Delphi 32bit. I'm reading and writing a file inplace and it looks like this error is invalid file handle, But I'm not sure. Does anyone know ? Torstein Petterse Delphi Developer Thu, 19 Nov 1998 03:00:00 GMT Re:I/O error 6 Quote> j...@atl.mindspring.com (john c. taylor) wrote in article <4osqb6$...@mule1.mindspring.com>... Quote> Can anyone tell me what an I/O error 6 is ? I've got a piece of code > that runs fine under 16bit Delphi but it gives me I/O error 6 under > Delphi 32bit. I'm reading and writing a file inplace and it looks > like this error is invalid file handle, But I'm not sure. > Does anyone know ? Error code 6 means invalid file handle. It may be that you have declared the read buffer before the File variable, and are trying to read more data than the buffer can hold. The buffer overflowes and your File variable is overwritten with the buffer overflow. I once had this problem myself and was unable to find what I/O error 6 meant. I had to find an old manual from Turbo Pascal for Windows to find a description of the error code. Hope this helps. Torstein Pettersen t...@online.no Torstein Petterse Delphi Developer Thu, 19 Nov 1998 03:00:00 GMT Re:I/O error 6 Quote> j...@atl.mindspring.com (john c. taylor) wrote in article <4osqb6$...@mule1.mindspring.com>... Quote> Can anyone tell me what an I/O error 6 is ? I've got a piece of code > that runs fine under 16bit Delphi but it gives me I/O error 6 under > Delphi 32bit. I'm reading and writing a file inplace and it looks > like this error is invalid file handle, But I'm not sure. > Does anyone know ? Error code 6 means invalid file handle. It may be that you have declared the read buffer before the File variable, and are trying to read more data than the buffer can hold. The buffer overflowes and your File variable is overwritten with the buffer overflow. I once had this problem myself and was unable to find what I/O error 6 meant. I had to find an old manual from Turbo Pascal for Windows to find a description of the error code. Hope this helps. Torstein Pettersen t...@online.no Svante Granqvis Delphi Developer Fri, 20 Nov 1998 03:00:00 GMT Re:I/O error 6 Quotejohn c. taylor wrote: > Can anyone tell me what an I/O error 6 is ? I've got a piece of code > that runs fine under 16bit Delphi but it gives me I/O error 6 under > Delphi 32bit. I'm reading and writing a file inplace and it looks > like this error is invalid file handle, But I'm not sure. > Does anyone know ? Maybe some part
I occasionally get I/O error 6 or 32. Heres my code: : [source code here, see previous message] In the copy below of the http://www.delphigroups.info/2/0b/141274.html first lines of your FormCreate procedure, I marked and commented the lines that can cause errors. Please let me know if this info solved your problem :) procedure TForm1.FormCreate(Sender: TObject); var SR: TSearchRec; Done: string; FName: http://www.festra.com/wwwboard/messages/13009.html string; InFile: textfile; LineofText: TextLines; i: integer; DotheEncryption: Boolean; begin DotheEncryption := False; Twofish1.InitialiseString('JanDunn'); If FindFirst('*.doc', faAnyFile, SR) = 0 then FName := SR.Name; { But... if FindFirst did NOT find a file, then FName doesn't contain a valid filename ! } AssignFile( InFile, Fname ); { If FName doesn't contain a valid filename, then InFile now points to a non-existing file } Reset(Infile); for i := 1 to 5 do begin { If InFile points to a non-existing file, then the next line will give an I/O error 6 } Readln(Infile, LineofText[i]); end; // etc... end; Related articles Follow Ups
Primary Software Version: 7.1 Primary Software Fixed Version: N/A Secondary Software: LabVIEW Development Systems>>LabVIEW Base Package Problem: I am http://digital.ni.com/public.nsf/allkb/64F59210BE983DAA86256F1A00006160 trying to use the Copy.vi from the File I/O subpalette but eventually get Error 6: Generic File I/O error. What causes this to occur? Solution: This error code is associated http://delphi-techie.faithweb.com/rich_text_4.html with several problems that can occur when specifying the source path that is input to the File I/O VI's. The most common circumstance is when a lengthy or improper file io error path is specified. However in this case, Copy.vi was being used to duplicate a file or directory to another computer using 2 network cards and a crossover ethernet cable. Make sure that the folder to which the file or directory is being copied has been setup to be a shared folder. Once this has been done, the source path that io error 6 is input to Copy.vi only needs to contain the computer name and the shared folder name (i.e. Computer2\SharedFolder). If you attempt to specify the drive on which the shared folder is located (i.e. Computer2\C:\SharedFolder), Error 6 will occur as shown above. The drive name is not necessary due to the fact that Copy.vi already knows to look for shared folders only. Thus, setting up a folder to be shared will essential put up a flag for which the File I/O VI's know to look. Related Links: KnowledgeBase 3DMAD3CC: Why do I get an unknown error when building a PDA executable?KnowledgeBase 2UH9L2PK: Error 6: Generic File I/O Error when Disk is Full in LabVIEW Real-Time Attachments: Report Date: 09/24/2004 Last Updated: 12/26/2008 Document ID: 3DNI22CC Your Feedback! Poor|Excellent Yes No Document Quality? Answered Your Question? 1 2 3 4 5 Document needs work? Please tell us why. Please Contact NI for all product and support inquiries. My Profile | RSS | Privacy | Legal | Contact NI © 2014 National Instruments Corporation. All rights reserved. |
DllForms SqlCommands XML XML Extension API MessageBox API DELPHI MemoryLeakage I|OERROR GuestBook Malai Appendix A - Delphi I/O ErrorsThanks goes out to Erik Martin for posting these Delphi IO errors on his web site. The following are the Windows API (and former DOS) IO errors, which are also the IO errors often returned by Delphi programs, and which are generally difficult to find reference for, and are especially difficult to find referenced as Delphi errors.Some of the high-numbered sections toward the end contain Windows API errors which are not truely be IO errors, but which may or may not be reported as such in programs.I/O Error 1:// IO Error 1L// ERROR_INVALID_FUNCTION // MessageText:// Incorrect function.I/O Error 2:// IO Error 2L// ERROR_FILE_NOT_FOUND// MessageText:// The system cannot find the file specified.I/O Error 3:// IO Error 3L// ERROR_PATH_NOT_FOUND// MessageText:// The system cannot find the path specified.I/O Error 4:// IO Error 4L// ERROR_TOO_MANY_OPEN_FILES// MessageText:// The system cannot open the file.I/O Error :5// IO Error 5L// ERROR_ACCESS_DENIED// MessageText:// Access is denied.I/O Error 6:// IO Error 6L// ERROR_INVALID_HANDLE// MessageText:// The handle is invalid.I/O Error 7:// IO Error 7L// ERROR_ARENA_TRASHED// MessageText:// The storage control blocks were destroyed.I/O Error 8:// IO Error 8L// ERROR_NOT_ENOUGH_MEMORY// MessageText:// Not enough storage is available to process this command.I/O Error 9:// IO Error 9L// ERROR_INVALID_BLOCK// MessageText:// The storage control block address is invalid.I/O Error 10:// IO Error 10L// ERROR_BAD_ENVIRONMENT// MessageText:// The environment is incorrect.I/O Error 11:// IO Error 11L// ERROR_BAD_FORMAT// MessageText:// An attempt was made to load a program with an// incorrect format.I/O Error 12:// IO Error 12L// ERROR_INVALID_ACCESS// MessageText:// The access code is invalid.I/O Error 13:// IO Error 13L// ERROR_INVALID_DATA// MessageText:// The data is invalid.I/O Error 14:// IO Error 14L// ERROR_OUTOFMEMORY// MessageText:// Not enough storage is available to complete this operation.I/O Error 15:// IO Error 15L// ERROR_INVALID_DRIVE// MessageText:// The system cannot find the drive specified.I/O Error 16:// IO Error 16L// ERROR_CURRENT_DIRECTORY// MessageText:// The directory cannot be removed.I/O Error 17:// IO Error 17L// ERROR_NOT_SAME_DEVICE// MessageText:// The system cannot move the file// to a different disk drive.I/O Error 18: