I'm using xhtml2pdf to convert html text to pdf. If I use from the command line, I can do this:

cat /var/www/cgi-bin/salida.html | xhtml2pdf - -

or this:

xhtml2pdf - - < /var/www/cgi-bin/salida.html

The parameters "- -" mean, take input from StdIn and send output to StdOut.

When I try to execute the same using TProcess, it apparently never receives the input.

Here's a modified snippet I copied from http://wiki.freepascal.org/Executing_External_Programs

procedure TForm1.Button1Click(Sender: TObject);
var
  lProcess: TProcess;
  lStr: TStringList;
  lText: string;
begin
  lProcess := TProcess.Create(nil);
  lStr := TStringList.Create;
  try
    lStr.LoadFromFile('/var/www/cgi-bin/salida.html');
    lProcess.Options := [poUsePipes, poStderrToOutPut];
    lProcess.CommandLine := '/usr/bin/xhtml2pdf - -';
    lProcess.Execute;
    lText := lStr.Text;
    lProcess.Input.Write(lText[1], Length(lText));
    lStr.Clear;
    lStr.LoadFromStream(lProcess.Output);
    lStr.SaveToFile('output.pdf');
  finally
    lStr.Free;
    lProcess.Free;
  end;
end;

Those programs usually either wait for EOLn or EOF, so perhaps you want to try appending LineEnding to your text or Close the Input (guessing this is the way to signal an EOF).

You should probably close the input. xhtml2pdf has no way of knowing it received all input.

Michael.

Thanks, lProcess.CloseInput; was the solution.

Regards,