I'm trying to call the Win32 API function GetSystemDefaultLangID() via Perl's Win32::API module, but I can't get it to work.

Here's the program that I thought would give me the answer: 

use strict;
use warnings;

use Win32::API;

Win32::API->Import('kernel32.dll', 'LANGID GetSystemDefaultLangID()') 
+or
  die "Can't import GetSystemDefaultLangID: $^E\n";

my $langid = GetSystemDefaultLangID();

if (defined $langid) {
  print "Returned '$langid'\n";
  printf "Lang ID: 0x%04X\n", $langid;
}
else {
  print "Returned <undef>\n";
}

[download]

However, when I run this it just outputs: 

Returned <undef>

[download]

The function itself works fine from a simple C program: 

#include <stdio.h>
#include <windows.h>
#include <winnls.h>
void main(void) {
  printf("Lang ID = 0x%04X\n", GetSystemDefaultLangID());
}

[download]

and similar Perl Win32::API programs involving other Win32 API functions also work fine, e.g. 

use strict;
use warnings;

use Win32::API;

Win32::API->Import('kernel32.dll', 'DWORD GetCurrentProcessId()') or
  die "Can't import GetCurrentProcessId: $^E\n";

my $procid = GetCurrentProcessId();

if (defined $procid) {
  print "Returned '$procid'\n";
}
else {
  print "Returned <undef>\n";
}

[download]

Where can I have gone wrong with something so simple, or is this a bug in Win32::API?

- Steve

In reply to How to call GetSystemDefaultLangID() with Win32::API by shay

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