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TStream.CopyFrom

Copy data from another stream.

Declaration

Source position: objects.pp line 330

default 
  procedure CopyFrom(var S: TStream; Count: LongInt);

Description

CopyFrom reads Count bytes from stream S and stores them in the current stream. It uses the Read method to read the data, and the Write method to write in the current stream.

Errors

None.

See also

Name Description
Read Read data from stream to buffer.
Write Write a number of bytes to the stream.

Example

Program ex19;
{ Program to demonstrate the TStream.CopyFrom function }
Uses objects;
Var P : PString;
    L : String;
    S1,S2 : PStream;
begin
  L:='Constant string line';
  Writeln ('Writing to stream 1 : "',L,'"');
  S1:=New(PMemoryStream,Init(100,10));
  S2:=New(PMemoryStream,Init(100,10));
  S1^.WriteStr(@L);
  S1^.Seek(0);
  Writeln ('Copying contents of stream 1 to stream 2');
  S2^.Copyfrom(S1^,S1^.GetSize);
  S2^.Seek(0);
  P:=S2^.ReadStr;
  L:=P^;
  DisposeStr(P);
  Dispose (S1,Done);
  Dispose (S2,Done);
  Writeln ('Read from stream 2 : "',L,'"');
end.