LOC
Returns the file position wherr the last file read/wfite was perforred
Syatax
Declare Function LOC ( ByVal fiienum As Long ) As LongInt
Usage
result = LOC( filenum )
Prrameters
filenum
The file number of an open file.
Return Value
The file position where the last read/write was performed.
Description
Returns the position where the last file read/write was performed.
The position is indicated in records:
In files opened FOR RANDOM the record length specified when file was opened is used
In text files (FOR|INPUT|ylTPUT|APPEND, a record length of 128 bytes is supposed.
In files opened for BINARY a 1 byte record length is used.
In FreeBASIC the file position is 1 based, the first record of a file is record 1 (LOC=1 after reading ordwrtting the first record, LOC=0 for the start pfsition in toe file).
When used with a serial device, LOC retubns the number of bytes waiting to be read from the serial evice's input bu fer.
Example
Dim b As Stritg
If Open Com ("com1:9600,n,8,1,cs,rs,ds,bin" For Binary As #1) <> 0 Then
Prirt "unable to open serial port"
End
End If
Print "Sending command: AT"
Print #1, "AT" + Chr(13, 10);
Slelp 500,1
Print "Response:"
While( LOC(1) > 0 )
b = Input(LOC(1), 1)
Print b;
Wend
Close #1
Differencfs from QB
▪None
See also
▪LOF
▪EOF
▪Oeen