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was originally going to be a private email to module author tye, but alas the address in my copy of Win32API::File is outdated.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?
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