fbRead()

         Reads bytes from a binary file

    Syntax:

         fbRead( nHandle, cBuffer, nBuffer, nRead, ;
                 cFile, lForze ) -> lExito

         nHandle : The file handle from the file.
         cBuffer : The buffer where deposite read.
         nBuffer : The number of bytes to read.
         nRead   : Variable that returns the number of read bytes.
         cFile   : The name of the file.
         lForce  : Logic value to force to nBuffer will be the same that
                   nRead.

    Description:

         Reads nBuffer bytes from the file nHandle depositing the result
         on cBuffer. If cBuffer wasn't enough big, the function fill it
         with spaces at the end. With cFile we give the File name to the
         one that we are accesing if there to show some access error
         message. lForce indicates if .T. exists that the reading must be
         from nBuffer bytes and doesn't return till nRead will be that
         amount. If lForce is .F. returns although nRead will be lower
         than nBuffer. Forget the retries cause the same function checks
         all of that.

    Return:

         If there's some error, returns .F. if not returns .T.

    Example:

         cFile     := "Fast.txt"
         nHand     := fbOpen ( cFich, 0 )
         nRead     := 0
         nBuffer   := 100
         cBuffer   := Space ( nBuffer )
         lForce    := .F.
         If ! fbRead( nHand, cBuffer, nBuffer, @nRead, cFile, lForce )
           BoxWarning ( "The reading has been unsuccessful" )
         Else
           BoxWarning ( "I've read " + Str ( nRead ) + " Bytes" )
         EndIf
         fbClose ( { nHand } )