I'm new to perl and I've been trying to code GlobalMemoryStatusEx in a perl script but I haven't had any luck, any help would be appreciated, here is my code

 
use warnings; 
use Win32::API; 
use Win32::API::Struct; 
use Data::Dumper; 
use strict; 

Win32::API::Struct->typedef(MEMORYSTATUSEX {  
    DWORD     dwLength;  
    DWORD     dwMemoryLoad;
    DWORDLONG ullTotalPhys;
    DWORDLONG ullAvailPhys;
    DWORDLONG ullTotalPageFile;
    DWORDLONG ullAvailPageFile;
    DWORDLONG ullTotalVirtual;
    DWORDLONG ullAvailVirtual;
    DWORDLONG ullAvailExtendedVirtual;
});

Win32::API->Import( 
    'kernel32', 'VOID GlobalMemoryStatusEx(LPMEMORYSTATUSEX lpBuffer);
+ 

my $stat = Win32::API::Struct->new('MEMORYSTATUSEX', lpBuffer); 

GlobalMemoryStatusEx($stat); 

my $dwLength = FormatBytes( $stat->{dwLength} );
print "Size of memory status structure: $dwLength\n";

$dwTotalPhys = FormatBytes( $stat->{ullTotalPhys} );
print "Total Available physical memory --> ullTotalPhys\n\n";

printf "Memory in use: %ld%%\n", 
        $stat->{dwMemoryLoad}; 
my $dwTotalPhys = FormatBytes( $stat->{dwTotalPhys} );        
print "Total physical memory --> $dwTotalPhys\n"; 
my $dwAvailPhys = FormatBytes( $stat->{ullAvailPhys} );
print "Free physical memory ---> ullAvailPhys \n"; 
my $dwTotalVirtual = FormatBytes( $stat->{ullTotalVirtual} );
print "Total virtual memory ---> $ullTotalVirtual \n"; 
my $dwAvailVirtual = FormatBytes( $stat->{ullAvailVirtual} );       
print "Free virtual memory ----> $ullAvailVirtual\n"; 
my $dwTotalPageFile = FormatBytes( $stat->{ullTotalPageFile} );
print "Total paging file ------> $ullTotalPageFile\n";
my $dwAvailPageFile =  FormatBytes( $stat->{ullAvailPageFile} );
print "Free paging file -------> $ullAvailPageFile\n\n";
[download]

Thanks for any help.

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