//////////////////////////////////////////////////////////////////////////
DWORD WINAPI ScanThread(LPVOID param)
{
	
	int nItems;
	char buff[256];
	char mac[256];
	DWORD tid;
	HANDLE host_threads[256];  //maximum for the subnet (C class)
	LVITEM itm;
	PARAM_BLOCK *preq_data;

	nItems = g_pDlg->m_HostList.GetItemCount();

	if(nItems > 256){
		MessageBox(0, "Maximum host number exceeded! (256). Check mping.txt", 0, 0);
		return 0;
	}
	
	
	// fillup info & spawn threads
	for(int i=0; i< nItems; i++){
		
		itm.cchTextMax = sizeof(buff);
		itm.pszText = buff;
		itm.mask = LVIF_TEXT;
		itm.iItem = i;

		g_pDlg->m_HostList.GetItem(&itm);
		MessageBox(0,buff,0,0);

		
		preq_data = (PARAM_BLOCK*)malloc(sizeof(PARAM_BLOCK));
		preq_data->dst = inet_addr(buff);
		preq_data->src = INADDR_ANY;//inet_addr("192.168.1.16"); // need to be fixed
		preq_data->data_len = sizeof(preq_data->mac_data);
		preq_data->idx = i;
		host_threads[i] = CreateThread(0,0,ARPThread,preq_data,0,&tid);  // problem #1
	}
	
	WaitForMultipleObjects(nItems, host_threads, 1, INFINITE); // problem #2
	return 0;
}