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Program ex16;
{ Program to demonstrate the TStream.Truncate method }
Uses Objects;
Var L : String;
P : PString;
S : PDosStream; { Only one with Truncate implemented. }
begin
L:='Some constant string';
{ Buffer size of 100 }
S:=New(PDosStream,Init('test.dat',stcreate));
Writeln ('Writing "',L,'" to stream with handle ',S^.Handle);
S^.WriteStr(@L);
S^.WriteStr(@L);
{ Close calls flush first }
S^.Close;
S^.Open (stOpen);
Writeln ('Size of stream is : ',S^.GetSize);
P:=S^.ReadStr;
L:=P^;
DisposeStr(P);
Writeln ('Read "',L,'" from stream with handle ',S^.Handle);
S^.Truncate;
Writeln ('Truncated stream. Size is : ',S^.GetSize);
S^.Close;
Dispose (S,Done);
end.
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