read binary file with fopen

[jairpinho]

read binary file with fopen, already performed tests and does not work follow binary file

20161228.zip

file *.dtl

(3.39 KiB) Downloaded 72 times

[KDJ]

jairpinho

This file can be read without any problem:

Code: Select all

#include "Fileio.ch"
#include "hmg.ch"

FUNCTION Main()
  LOCAL cFile   := "20161228.dtl"
  LOCAL nHandle := fOpen(cFile, FO_READ + FO_COMPAT)
  LOCAL nLen
  LOCAL cContent

  IF nHandle < 0
    MsgBox("Error opening file!")
  ELSE
    fSeek(nHandle, 0, FS_SET)
    nLen := HB_fSize(cFile)

    //read all content of file
    cContent := HB_fReadLen(nHandle, nLen)
    MsgBox(Len(cContent))

    //read 20 last bytes
    fSeek(nHandle, -20, FS_END)
    cContent := HB_fReadLen(nHandle, nLen)
    MsgBox(Len(cContent))

    fClose(nHandle)
  ENDIF

RETURN NIL

[jairpinho]

jairpinho

This file can be read without any problem:

Code: Select all

#include "Fileio.ch"
#include "hmg.ch"

FUNCTION Main()
  LOCAL cFile   := "20161228.dtl"
  LOCAL nHandle := fOpen(cFile, FO_READ + FO_COMPAT)
  LOCAL nLen
  LOCAL cContent

  IF nHandle < 0
    MsgBox("Error opening file!")
  ELSE
    fSeek(nHandle, 0, FS_SET)
    nLen := HB_fSize(cFile)

    //read all content of file
    cContent := HB_fReadLen(nHandle, nLen)
    MsgBox(Len(cContent))

    //read 20 last bytes
    fSeek(nHandle, -20, FS_END)
    cContent := HB_fReadLen(nHandle, nLen)
    MsgBox(Len(cContent))

    fClose(nHandle)
  ENDIF

RETURN NIL

Hello KDJ you are reading the file size this is not an error, it will only give an error when trying to read the contents of the file that would be what I need to follow, an example of what is inside the file, I need to import this into a grid

dados arquivo.gif (59.48 KiB) Viewed 1269 times

[serge_girard]

Jair,

IMO: better take a EDITBOX to display content.
For a GRID you will need to create several lines (say 80char), divide cContent in chuncks of 80chars and put them in a GRID.

Serge

[BeGeS]

Serge,

This is a .DTL file.

I'm afraid that with EDITBOX you will not get anything, neither with FREADSTR() or similar low-level functions.

It would be necessary a tool that would make the contents of the file something readable.

[serge_girard]

Absolutely right !

Browsing works with Free Hex Editor Neo.

[jairpinho]

Hello, I found the dtl files are data files, I'm trying to connect via odbs but without success, so I found the lib site need help to convert the mak file

http://dtemplatelib.sourceforge.net/index.htm

DTLbcb5.zip

(1.27 KiB) Downloaded 53 times