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Howdy peeps, this was originally going to be a private email to module author tye, but alas the address in my copy of Win32API::File is outdated. And perhaps the wider Perl community can help/learn from this.

I have used Win32API::File to get out of a few tight spots in the last couple years. Alas I have now gotten into a spot that it should help me with, but I am coming up short. I'm unable to set the HANDLE_FLAG_PROTECT_FROM_CLOSE flag and I'm not sure if it is a problem with the module, or with my environment.

Here's sample code:

#!perl -w use strict; use Win32API::File qw(:Func :HANDLE_FLAG_); open my $fh,">&2"; my $os_handle=GetOsFHandle($fh) or die "Can't GetOSFHandle: $^E,\nstop +ped"; GetHandleInformation($os_handle, my $flags); print "flags was=$flags\n"; print "HANDLE_FLAG_PROTECT_FROM_CLOSE=",HANDLE_FLAG_PROTECT_FROM_CLOSE +,"\n"; $flags |= HANDLE_FLAG_INHERIT|HANDLE_FLAG_PROTECT_FROM_CLOSE; print "Trying for flags=$flags\n"; SetHandleInformation($os_handle, $flags, $flags) or die "Can't SetHandleInformation: $^E,\nstopped"; GetHandleInformation($os_handle, my $newflags); print "flags now=$newflags\n";
That prints
flags was=1
HANDLE_FLAG_PROTECT_FROM_CLOSE=2
Trying for flags=3
flags now=1
It's the last line "flags now=1" that indicates to me that SetHandleInformation isn't actually setting "HANDLE_FLAG_PROTECT_FROM_CLOSE"
perl -v
This is perl 5, version 14, subversion 2 (v5.14.2) built for
MSWin32-x86-multi-thread
(with 1 registered patch, see perl -V for more detail)
Any ideas?

In reply to Win32API::File not setting HANDLE_FLAG_PROTECT_FROM_CLOSE by Yary

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