static HRESULT WINAPI COMCAT_IEnumCATEGORYINFO_Next(
LPENUMCATEGORYINFO iface,
ULONG celt,
CATEGORYINFO *rgelt,
ULONG *pceltFetched)
{
IEnumCATEGORYINFOImpl *This = (IEnumCATEGORYINFOImpl *)iface;
ULONG fetched = 0;
TRACE("\n");
if (rgelt == NULL) return E_POINTER;
if (This->key) while (fetched < celt) {
LSTATUS res;
HRESULT hr;
WCHAR catid[39];
DWORD cName = 39;
HKEY subkey;
res = RegEnumKeyExW(This->key, This->next_index, catid, &cName,
NULL, NULL, NULL, NULL);
if (res != ERROR_SUCCESS && res != ERROR_MORE_DATA) break;
++(This->next_index);
hr = CLSIDFromString(catid, &rgelt->catid);
if (FAILED(hr)) continue;
res = RegOpenKeyExW(This->key, catid, 0, KEY_READ, &subkey);
if (res != ERROR_SUCCESS) continue;
hr = COMCAT_GetCategoryDesc(subkey, This->lcid,
rgelt->szDescription, 128);
RegCloseKey(subkey);
if (FAILED(hr)) continue;
rgelt->lcid = This->lcid;
++fetched;
++rgelt;
}
if (pceltFetched) *pceltFetched = fetched;
return fetched == celt ? S_OK : S_FALSE;
}
/**********************************************************************
* COMCAT_ICatInformation_GetCategoryDesc
*/
static HRESULT WINAPI COMCAT_ICatInformation_GetCategoryDesc(
LPCATINFORMATION iface,
REFCATID rcatid,
LCID lcid,
PWCHAR *ppszDesc)
{
/* ICOM_THIS_MULTI(ComCatMgrImpl, infVtbl, iface); */
WCHAR keyname[60] = { 'C', 'o', 'm', 'p', 'o', 'n', 'e', 'n',
't', ' ', 'C', 'a', 't', 'e', 'g', 'o',
'r', 'i', 'e', 's', '\\', 0 };
HKEY key;
HRESULT res;
TRACE("\n\tCATID:\t%s\n\tLCID:\t%X\n",debugstr_guid(rcatid), lcid);
if (rcatid == NULL || ppszDesc == NULL) return E_INVALIDARG;
/* Open the key for this category. */
if (!StringFromGUID2(rcatid, keyname + 21, 39)) return E_FAIL;
res = RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &key);
if (res != ERROR_SUCCESS) return CAT_E_CATIDNOEXIST;
/* Allocate a sensible amount of memory for the description. */
*ppszDesc = (PWCHAR) CoTaskMemAlloc(128 * sizeof(WCHAR));
if (*ppszDesc == NULL) {
RegCloseKey(key);
return E_OUTOFMEMORY;
}
/* Get the description, and make sure it's null terminated. */
res = COMCAT_GetCategoryDesc(key, lcid, *ppszDesc, 128);
RegCloseKey(key);
if (FAILED(res)) {
CoTaskMemFree(*ppszDesc);
return res;
}
return S_OK;
}