Win32 ReadFile hangs when reading from pipe

Question

I am creating a child process, and reading its output. My code works fine when the child process creates output (cmd /c echo Hello World), however ReadFile will

Answer 1

You should close the write end of the output pipe before you read from it, as @Marcus suggested in the comment.

CloseHandle(g_hChildStd_OUT_Wr);

For me this is the real answer.