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Program ex17;
{ Program to demonstrate the TStream.Seek method }
Uses Objects;
Var L : String;
Marker : Word;
P : PString;
S : PDosStream;
begin
L:='Some constant string';
{ Buffer size of 100 }
S:=New(PDosStream,Init('test.dat',stcreate));
Writeln ('Writing "',L,'" to stream.');
S^.WriteStr(@L);
Marker:=S^.GetPos;
Writeln ('Set marker at ',Marker);
L:='Some other constant String';
Writeln ('Writing "',L,'" to stream.');
S^.WriteStr(@L);
S^.Close;
S^.Open (stOpenRead);
Writeln ('Size of stream is : ',S^.GetSize);
Writeln ('Seeking to marker');
S^.Seek(Marker);
P:=S^.ReadStr;
L:=P^;
DisposeStr(P);
Writeln ('Read "',L,'" from stream.');
S^.Close;
Dispose (S,Done);
end.
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