Re: Hexdump - Display TextElements from binary File

> If i read the file in binary mode from beginning or from
> my start pointer i get to my messagebox some readable
> characters until there is no zero value. If my application
> reads a zero byte i get no more results to my messagebox.

That's to be expected. MSGBOX displays all text as 'ASCIIZ' strings,
teminating on a null byte.

What you might want to try is replacing all nulls in your string with a
non-null character before attempting to display that string wiht MSGBOX.

e.g., something like this...

> ' read 200 Bytes from Pointer
> FOR a = 1 TO 200
> GET$ #1, 1 , Char$
> TempStr$ = TempStr$ + CHR$(Char$)
> NEXT a
addthisline:
REPLACE CHR$(0) WITH CHR$(32) IN TempStr$ <<< change all nulls to
space for purposes of displaying

> MSGBOX "Position in File: " + STR$(position) + $CRLF + _
> "Data from File: " + TempStr$

Note the TempStr DOES include the null characters, so if you write it to a
file the NUL will be included and if you have a hex editor of some kind you
will see it.

That is, this limitation is specifically a limitation of MSGBOX ( and is
documented: "Strings displayed by the MSGBOX statement are truncated if they
contain embedded $NUL {CHR$(0)} bytes.")

MCM





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