Seek Function Example

This example uses the Seek function to return the current file position. The example assumes TESTFILE is a file containing records of the user-defined type Record.

Type Record    ' Define user-defined type.
    ID As Integer
    Name As String * 20
End Type

For files opened in Random mode, Seek returns number of next record.

Dim MyRecord As Record    ' Declare variable.
Open "TESTFILE" For Random As #1 Len = Len(MyRecord)
Do While Not EOF(1)    ' Loop until end of file.
    Get #1, , MyRecord    ' Read next record.
    Debug.Print Seek(1)    ' Print record number to the 
            ' Immediate window.
Loop
Close #1    ' Close file.

For files opened in modes other than Random mode, Seek returns the byte position at which the next operation takes place. Assume TESTFILE is a file containing a few lines of text.

Dim MyChar
Open "TESTFILE" For Input As #1    ' Open file for reading.
Do While Not EOF(1)    ' Loop until end of file.
    MyChar = Input(1, #1)    ' Read next character of data.
    Debug.Print Seek(1)    ' Print byte position to the
            ' Immediate window.
Loop
Close #1    ' Close file.