Re: CreateProcess() problem

"Doug Harrison [MVP]" <>
Wed, 28 May 2008 15:20:20 -0500
On Wed, 28 May 2008 13:07:35 -0700 (PDT), neilsolent
<> wrote:

I am using the CreateProcess() function to create a child process that
writes its stdout to a file.

I am opening the output file in the parent process, then passing it to
the child via the lpStartupInfo parameter of CreateProcess(), and by
specifying TRUE for the bInheritHandles parameter.

This works fine, except that the child process also inherits handles
that I don't want it to - for example sockets that the parent process
may have open!

Is there a way (of achieving a child process writing to stdout to a
file) without setting bInheritHandles to TRUE?

It's possible to specify that handles won't be inherited when you create
them. See for example CreateFile's lpSecurityAttributes parameter. Beyond
this, to disallow inheritance in CreateProcess, I believe the child process
would have to assist in the handle transfer in some scheme involving

Doug Harrison
Visual C++ MVP

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