How do I filter FindFirstUrlCacheEntry()? - c

Question

I have studied the documentation on MSDN, but it doesn't work for me, I am wondering what I'm doing wrong?
My code is as follows, I am trying to filter my IE cache, for example, to get only the cookies:
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <wininet.h>
int main(void) {
DWORD dwEntrySize;
DWORD dw;
LPCTSTR filter = "cookie:";
INTERNET_CACHE_ENTRY_INFO * entry;
DWORD MAX_CACHE_ENTRY_INFO_SIZE = 4096;
HANDLE hCacheDir;
int nCount=0;
BOOL ok = FALSE;
dwEntrySize = MAX_CACHE_ENTRY_INFO_SIZE;
entry = malloc(dwEntrySize);
entry->dwStructSize = dwEntrySize;
printf("Reading IE cache\n");
hCacheDir = FindFirstUrlCacheEntry(filter, entry, &dwEntrySize);
if ( hCacheDir ) {
printf("%ws\n", entry->lpszLocalFileName);
nCount++;
do {
dwEntrySize = MAX_CACHE_ENTRY_INFO_SIZE;
entry = malloc(dwEntrySize);
entry->dwStructSize = dwEntrySize;
ok = FindNextUrlCacheEntry(hCacheDir, entry, &dwEntrySize);
if (ok && entry->lpszLocalFileName != NULL) {
printf("%ws\n", entry->lpszLocalFileName);
nCount++;
}
} while ( ok );
printf("**** end cache, total count: %d\n", nCount);
}
else {
dw = GetLastError();
printf("error code: %d\n", dw);
}
free(entry);
FindCloseUrlCache(hCacheDir);
return 0;
}