Hi, I have the following code to list the running PIDs on a Windows machine. It uses the Win32::API module.

#! /usr/bin/perl

#use strict;
use warnings;

use Win32::API;

#define some constants
my $DWORD_SIZE = 4;
my $PROC_ARRAY_SIZE = 300;
my $MODULE_LIST_SIZE = 300;

#define some Win32 API constants
my $PROCESS_QUERY_INFORMATION = 0x0400;
my $PROCESS_VM_READ = 0x0010;

my $enum_proc    = new Win32::API( 'psapi.dll', 'EnumProcesses', [P,N,
+P], I ) || die "Cannot Enum Processes: $!\n";

#Create a Buffer Array
my $proc_array    = &MakeBuffer($DWORD_SIZE * $PROC_ARRAY_SIZE);
my $proc_num    = &MakeBuffer($DWORD_SIZE);

if (0 != $enum_proc->Call($proc_array, $PROC_ARRAY_SIZE, $proc_num)) {
    $proc_num = unpack ("L", $proc_num) / $DWORD_SIZE;
    print "\$proc_num = $proc_num\n";
    
    my @pid_lst = unpack("L$proc_num", $proc_array);
    foreach my $pid(@pid_lst) {
        print "$pid - Running\n";
    }
}

sub MakeBuffer
{
    my ($buffer_size) = @_;
    return("\x00" x $buffer_size);
}
[download]

You will notice that use strict; is commented out. The reason is that when I uncomment use strict; I get the following error,

Bareword "P" not allowed while "strict subs" in use at C:\dev\Source_P
+erl\MiscTests\pid\roth.pl line 17.
Bareword "N" not allowed while "strict subs" in use at C:\dev\Source_P
+erl\MiscTests\pid\roth.pl line 17.
Bareword "P" not allowed while "strict subs" in use at C:\dev\Source_P
+erl\MiscTests\pid\roth.pl line 17.
Bareword "I" not allowed while "strict subs" in use at C:\dev\Source_P
+erl\MiscTests\pid\roth.pl line 17.
Execution of C:\dev\Source_Perl\MiscTests\pid\roth.pl aborted due to c
+ompilation errors.
[download]

Any ideas how I can still use strict and line 17 together..? I got most of this code from Dave Roths Win32 Perl Scripting book.

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