[Qt-interest] QProcess, stdin and Windows

[Dong Tiger]

Hi,

I am writing a Qt progrom, which launches another Qt program using QProcess
and talks with the child process through the child's stdin/stdout. In the
child process, I spawn a thread which keep reading stdin and the code looks
like that:

  QTextStream input(stdin, QFile::ReadOnly);
  while (1) {
    QString line = input.readLine();
    if (!line.isNull()) {
      LOG("%d:%s", line.length, line.toStdString().c_str());
      emit GotLine(line);
    }
  }

But it turns out that the thread can only read in the first line.  After
that, the thread only read in an empty string with lengh 0. But if I run the
child program directly from "cmd", it will echo everything I enter.

Any idea of that? TIA.

--
Tiger
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