i am C newbie, help please, i am trying to get this too work.

[Jeremy A]

hi all,
I want to be able to call perl from c (eg Win32::GuiTest::FindWindowLike) 
and get this working.....basically capturing hwnd handles of open windows 
and printing them.

thanks in advance,
regards,
Jeremy A.
my code is below.
--------------------------------------------------------------------------------------------
use Win32::GuiTest qw/FindWindowLike GetWindowText ShowWindow/;
use Inline C;
sub FWL
{
my ($zero,$class,$subclass);
return FindWindowLike($zero,$class,$subclass);
}
set_callback("$main::FWL");
this_test();
__DATA__
__C__
#include <stdio.h>
#include <windows.h>
static char* callback;
int isWindowOpenedHistory;
int hwnd;
int elements;
int ec;
void set_callback(char* name) {
    callback = name;
}
void this_test()
{
        
        
        while(1)
        {
                
        
                
                isWindowOpenedHistory = malloc(5 * sizeof(&isWindowOpenedHistory));
                hwnd = malloc(5 * sizeof(&hwnd));
                inline_stack_vars;
                Inline_Stack_Reset;
                Inline_Stack_Push(newI32(0));
                Inline_Stack_Push(newSVpvf("Internet Explorer"));
                Inline_Stack_Push(newSVpvf(""));
                Inline_Stack_Done;
                perl_call_pv(callback, 0);
                Inline_Stack_Return(&hwnd); 
                elements = sizeof(*hwnd)/sizeof(int);
                for(ec = 0;ec < elements;ec++)
                {
                        printf("handle %d\n",hwnd[ec]);
                }
                Sleep(1);
                printf("test\n");
                free(isWindowOpenedHistory);
        
        }
}