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Complete ICatInformation implementation.

This commit is contained in:
John K. Hohm 2002-06-02 21:25:08 +00:00 committed by Alexandre Julliard
parent dec45522f6
commit 36ed03e246
3 changed files with 586 additions and 19 deletions
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2
dlls/comcat/Makefile.in
View File

@ -4,7 +4,7 @@ SRCDIR = @srcdir@
VPATH = @srcdir@
MODULE = comcat.dll
IMPORTS = ole32 user32 advapi32 kernel32
EXTRALIBS = $(LIBUUID)
EXTRALIBS = $(LIBUNICODE) $(LIBUUID)
LDDLLFLAGS = @LDDLLFLAGS@
SYMBOLFILE = $(MODULE).tmp.o

1
dlls/comcat/comcat.h
View File

@ -27,6 +27,7 @@
#include "wine/obj_base.h"
#include "wine/obj_enumguid.h"
#include "wine/obj_comcat.h"
#include "wine/unicode.h"
/**********************************************************************
* Dll lifetime tracking declaration for comcat.dll

602
dlls/comcat/information.c
View File

@ -30,6 +30,20 @@ static LPENUMCATEGORYINFO COMCAT_IEnumCATEGORYINFO_Construct(LCID lcid);
static HRESULT COMCAT_GetCategoryDesc(HKEY key, LCID lcid, PWCHAR pszDesc,
ULONG buf_wchars);
struct class_categories {
LPCWSTR impl_strings;
LPCWSTR req_strings;
};
static struct class_categories *COMCAT_PrepareClassCategories(
ULONG impl_count, CATID *impl_catids, ULONG req_count, CATID *req_catids);
static HRESULT COMCAT_IsClassOfCategories(
HKEY key, struct class_categories const* class_categories);
static LPENUMGUID COMCAT_CLSID_IEnumGUID_Construct(
struct class_categories const* class_categories);
static LPENUMGUID COMCAT_CATID_IEnumGUID_Construct(
REFCLSID rclsid, LPCWSTR impl_req);
/**********************************************************************
* COMCAT_ICatInformation_QueryInterface
*/
@ -146,9 +160,24 @@ static HRESULT WINAPI COMCAT_ICatInformation_EnumClassesOfCategories(
LPENUMCLSID *ppenumCLSID)
{
/* ICOM_THIS_MULTI(ComCatMgrImpl, infVtbl, iface); */
FIXME("(): stub\n");
struct class_categories *categories;
return E_NOTIMPL;
TRACE("\n");
if (iface == NULL || ppenumCLSID == NULL ||
(cImplemented && rgcatidImpl == NULL) ||
(cRequired && rgcatidReq == NULL)) return E_POINTER;
categories = COMCAT_PrepareClassCategories(cImplemented, rgcatidImpl,
cRequired, rgcatidReq);
if (categories == NULL) return E_OUTOFMEMORY;
*ppenumCLSID = COMCAT_CLSID_IEnumGUID_Construct(categories);
if (*ppenumCLSID == NULL) {
HeapFree(GetProcessHeap(), 0, categories);
return E_OUTOFMEMORY;
}
IEnumGUID_AddRef(*ppenumCLSID);
return S_OK;
}
/**********************************************************************
@ -163,9 +192,40 @@ static HRESULT WINAPI COMCAT_ICatInformation_IsClassOfCategories(
CATID *rgcatidReq)
{
/* ICOM_THIS_MULTI(ComCatMgrImpl, infVtbl, iface); */
FIXME("(): stub\n");
WCHAR keyname[45] = { 'C', 'L', 'S', 'I', 'D', '\\', 0 };
HRESULT res;
struct class_categories *categories;
HKEY key;
return E_NOTIMPL;
if (WINE_TRACE_ON(ole)) {
ULONG count;
TRACE("\n\tCLSID:\t%s\n\tImplemented %lu\n",debugstr_guid(rclsid),cImplemented);
for (count = 0; count < cImplemented; ++count)
DPRINTF("\t\t%s\n",debugstr_guid(&rgcatidImpl[count]));
DPRINTF("\tRequired %lu\n",cRequired);
for (count = 0; count < cRequired; ++count)
DPRINTF("\t\t%s\n",debugstr_guid(&rgcatidReq[count]));
}
if ((cImplemented && rgcatidImpl == NULL) ||
(cRequired && rgcatidReq == NULL)) return E_POINTER;
res = StringFromGUID2(rclsid, keyname + 6, 39);
if (FAILED(res)) return res;
categories = COMCAT_PrepareClassCategories(cImplemented, rgcatidImpl,
cRequired, rgcatidReq);
if (categories == NULL) return E_OUTOFMEMORY;
res = RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &key);
if (res == ERROR_SUCCESS) {
res = COMCAT_IsClassOfCategories(key, categories);
RegCloseKey(key);
} else res = S_FALSE;
HeapFree(GetProcessHeap(), 0, categories);
return res;
}
/**********************************************************************
@ -177,9 +237,18 @@ static HRESULT WINAPI COMCAT_ICatInformation_EnumImplCategoriesOfClass(
LPENUMCATID *ppenumCATID)
{
/* ICOM_THIS_MULTI(ComCatMgrImpl, infVtbl, iface); */
FIXME("(): stub\n");
WCHAR postfix[24] = { '\\', 'I', 'm', 'p', 'l', 'e', 'm', 'e',
'n', 't', 'e', 'd', ' ', 'C', 'a', 't',
'e', 'g', 'o', 'r', 'i', 'e', 's', 0 };
return E_NOTIMPL;
TRACE("\n\tCLSID:\t%s\n",debugstr_guid(rclsid));
if (iface == NULL || rclsid == NULL || ppenumCATID == NULL)
return E_POINTER;
*ppenumCATID = COMCAT_CATID_IEnumGUID_Construct(rclsid, postfix);
if (*ppenumCATID == NULL) return E_OUTOFMEMORY;
return S_OK;
}
/**********************************************************************
@ -191,9 +260,18 @@ static HRESULT WINAPI COMCAT_ICatInformation_EnumReqCategoriesOfClass(
LPENUMCATID *ppenumCATID)
{
/* ICOM_THIS_MULTI(ComCatMgrImpl, infVtbl, iface); */
FIXME("(): stub\n");
WCHAR postfix[21] = { '\\', 'R', 'e', 'q', 'u', 'i', 'r', 'e',
'd', ' ', 'C', 'a', 't', 'e', 'g', 'o',
'r', 'i', 'e', 's', 0 };
return E_NOTIMPL;
TRACE("\n\tCLSID:\t%s\n",debugstr_guid(rclsid));
if (iface == NULL || rclsid == NULL || ppenumCATID == NULL)
return E_POINTER;
*ppenumCATID = COMCAT_CATID_IEnumGUID_Construct(rclsid, postfix);
if (*ppenumCATID == NULL) return E_OUTOFMEMORY;
return S_OK;
}
/**********************************************************************
@ -322,28 +400,54 @@ static HRESULT WINAPI COMCAT_IEnumCATEGORYINFO_Skip(
LPENUMCATEGORYINFO iface,
ULONG celt)
{
/* ICOM_THIS(IEnumCATEGORYINFOImpl, iface); */
FIXME("(): stub\n");
ICOM_THIS(IEnumCATEGORYINFOImpl, iface);
return E_NOTIMPL;
TRACE("\n");
if (This == NULL) return E_POINTER;
This->next_index += celt;
/* This should return S_FALSE when there aren't celt elems to skip. */
return S_OK;
}
static HRESULT WINAPI COMCAT_IEnumCATEGORYINFO_Reset(LPENUMCATEGORYINFO iface)
{
/* ICOM_THIS(IEnumCATEGORYINFOImpl, iface); */
FIXME("(): stub\n");
ICOM_THIS(IEnumCATEGORYINFOImpl, iface);
return E_NOTIMPL;
TRACE("\n");
if (This == NULL) return E_POINTER;
This->next_index = 0;
return S_OK;
}
static HRESULT WINAPI COMCAT_IEnumCATEGORYINFO_Clone(
LPENUMCATEGORYINFO iface,
IEnumCATEGORYINFO **ppenum)
{
/* ICOM_THIS(IEnumCATEGORYINFOImpl, iface); */
FIXME("(): stub\n");
ICOM_THIS(IEnumCATEGORYINFOImpl, iface);
WCHAR keyname[21] = { 'C', 'o', 'm', 'p', 'o', 'n', 'e', 'n',
't', ' ', 'C', 'a', 't', 'e', 'g', 'o',
'r', 'i', 'e', 's', 0 };
IEnumCATEGORYINFOImpl *new_this;
return E_NOTIMPL;
TRACE("\n");
if (This == NULL || ppenum == NULL) return E_POINTER;
new_this = (IEnumCATEGORYINFOImpl *) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IEnumCATEGORYINFOImpl));
if (new_this == NULL) return E_OUTOFMEMORY;
ICOM_VTBL(new_this) = ICOM_VTBL(This);
new_this->ref = 1;
new_this->lcid = This->lcid;
/* FIXME: could we more efficiently use DuplicateHandle? */
RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &new_this->key);
new_this->next_index = This->next_index;
*ppenum = (LPENUMCATEGORYINFO)new_this;
return S_OK;
}
ICOM_VTABLE(IEnumCATEGORYINFO) COMCAT_IEnumCATEGORYINFO_Vtbl =
@ -392,8 +496,470 @@ static HRESULT COMCAT_GetCategoryDesc(HKEY key, LCID lcid, PWCHAR pszDesc,
/* FIXME: lcid comparisons are more complex than this! */
wsprintfW(valname, fmt, lcid);
res = RegQueryValueExW(key, valname, 0, &type, (LPBYTE)pszDesc, &size);
if (res != ERROR_SUCCESS || type != REG_SZ) return CAT_E_NODESCRIPTION;
if (res != ERROR_SUCCESS || type != REG_SZ) {
FIXME("Simplified lcid comparison\n");
return CAT_E_NODESCRIPTION;
}
pszDesc[size / sizeof(WCHAR)] = (WCHAR)0;
return S_OK;
}
/**********************************************************************
* COMCAT_PrepareClassCategories
*/
static struct class_categories *COMCAT_PrepareClassCategories(
ULONG impl_count, CATID *impl_catids, ULONG req_count, CATID *req_catids)
{
struct class_categories *categories;
WCHAR *strings;
categories = (struct class_categories *)HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY,
sizeof(struct class_categories) +
((impl_count + req_count) * 39 + 2) * sizeof(WCHAR));
if (categories == NULL) return categories;
strings = (WCHAR *)(categories + 1);
categories->impl_strings = strings;
while (impl_count--) {
StringFromGUID2(impl_catids++, strings, 39);
strings += 39;
}
*strings++ = 0;
categories->req_strings = strings;
while (req_count--) {
StringFromGUID2(req_catids++, strings, 39);
strings += 39;
}
*strings++ = 0;
return categories;
}
/**********************************************************************
* COMCAT_IsClassOfCategories
*/
static HRESULT COMCAT_IsClassOfCategories(
HKEY key,
struct class_categories const* categories)
{
WCHAR impl_keyname[23] = { 'I', 'm', 'p', 'l', 'e', 'm', 'e', 'n',
't', 'e', 'd', ' ', 'C', 'a', 't', 'e',
'g', 'o', 'r', 'i', 'e', 's', 0 };
WCHAR req_keyname[20] = { 'R', 'e', 'q', 'u', 'i', 'r', 'e', 'd',
' ', 'C', 'a', 't', 'e', 'g', 'o', 'r',
'i', 'e', 's', 0 };
HKEY subkey;
HRESULT res;
DWORD index;
LPCWSTR string;
/* Check that every given category is implemented by class. */
res = RegOpenKeyExW(key, impl_keyname, 0, KEY_READ, &subkey);
if (res != ERROR_SUCCESS) return S_FALSE;
for (string = categories->impl_strings; *string; string += 39) {
HKEY catkey;
res = RegOpenKeyExW(subkey, string, 0, 0, &catkey);
if (res != ERROR_SUCCESS) {
RegCloseKey(subkey);
return S_FALSE;
}
RegCloseKey(catkey);
}
RegCloseKey(subkey);
/* Check that all categories required by class are given. */
res = RegOpenKeyExW(key, req_keyname, 0, KEY_READ, &subkey);
if (res == ERROR_SUCCESS) {
for (index = 0; ; ++index) {
WCHAR keyname[39];
DWORD size = 39;
res = RegEnumKeyExW(subkey, index, keyname, &size,
NULL, NULL, NULL, NULL);
if (res != ERROR_SUCCESS && res != ERROR_MORE_DATA) break;
if (size != 38) continue; /* bogus catid in registry */
for (string = categories->req_strings; *string; string += 39)
if (!strcmpiW(string, keyname)) break;
if (!*string) {
RegCloseKey(subkey);
return S_FALSE;
}
}
RegCloseKey(subkey);
}
return S_OK;
}
/**********************************************************************
* ClassesOfCategories IEnumCLSID (IEnumGUID) implementation
*
* This implementation is not thread-safe. The manager itself is, but
* I can't imagine a valid use of an enumerator in several threads.
*/
typedef struct
{
ICOM_VFIELD(IEnumGUID);
DWORD ref;
struct class_categories const *categories;
HKEY key;
DWORD next_index;
} CLSID_IEnumGUIDImpl;
static ULONG WINAPI COMCAT_CLSID_IEnumGUID_AddRef(LPENUMGUID iface)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
return ++(This->ref);
}
static HRESULT WINAPI COMCAT_CLSID_IEnumGUID_QueryInterface(
LPENUMGUID iface,
REFIID riid,
LPVOID *ppvObj)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
if (This == NULL || ppvObj == NULL) return E_POINTER;
if (IsEqualGUID(riid, &IID_IUnknown) ||
IsEqualGUID(riid, &IID_IEnumGUID))
{
*ppvObj = (LPVOID)iface;
COMCAT_CLSID_IEnumGUID_AddRef(iface);
return S_OK;
}
return E_NOINTERFACE;
}
static ULONG WINAPI COMCAT_CLSID_IEnumGUID_Release(LPENUMGUID iface)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
if (--(This->ref) == 0) {
if (This->key) RegCloseKey(This->key);
HeapFree(GetProcessHeap(), 0, (LPVOID)This->categories);
HeapFree(GetProcessHeap(), 0, This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI COMCAT_CLSID_IEnumGUID_Next(
LPENUMGUID iface,
ULONG celt,
GUID *rgelt,
ULONG *pceltFetched)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
ULONG fetched = 0;
TRACE("\n");
if (This == NULL || rgelt == NULL) return E_POINTER;
if (This->key) while (fetched < celt) {
HRESULT res;
WCHAR clsid[39];
DWORD cName = 39;
HKEY subkey;
res = RegEnumKeyExW(This->key, This->next_index, clsid, &cName,
NULL, NULL, NULL, NULL);
if (res != ERROR_SUCCESS && res != ERROR_MORE_DATA) break;
++(This->next_index);
res = CLSIDFromString(clsid, rgelt);
if (FAILED(res)) continue;
res = RegOpenKeyExW(This->key, clsid, 0, KEY_READ, &subkey);
if (res != ERROR_SUCCESS) continue;
res = COMCAT_IsClassOfCategories(subkey, This->categories);
RegCloseKey(subkey);
if (res != S_OK) continue;
++fetched;
++rgelt;
}
if (pceltFetched) *pceltFetched = fetched;
return fetched == celt ? S_OK : S_FALSE;
}
static HRESULT WINAPI COMCAT_CLSID_IEnumGUID_Skip(
LPENUMGUID iface,
ULONG celt)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
This->next_index += celt;
FIXME("Never returns S_FALSE\n");
return S_OK;
}
static HRESULT WINAPI COMCAT_CLSID_IEnumGUID_Reset(LPENUMGUID iface)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
This->next_index = 0;
return S_OK;
}
static HRESULT WINAPI COMCAT_CLSID_IEnumGUID_Clone(
LPENUMGUID iface,
IEnumGUID **ppenum)
{
ICOM_THIS(CLSID_IEnumGUIDImpl, iface);
WCHAR keyname[6] = { 'C', 'L', 'S', 'I', 'D', 0 };
CLSID_IEnumGUIDImpl *new_this;
DWORD size;
TRACE("\n");
if (This == NULL || ppenum == NULL) return E_POINTER;
new_this = (CLSID_IEnumGUIDImpl *) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLSID_IEnumGUIDImpl));
if (new_this == NULL) return E_OUTOFMEMORY;
ICOM_VTBL(new_this) = ICOM_VTBL(This);
new_this->ref = 1;
size = HeapSize(GetProcessHeap(), 0, (LPVOID)This->categories);
new_this->categories = (struct class_categories *)
HeapAlloc(GetProcessHeap(), 0, size);
if (new_this->categories == NULL) {
HeapFree(GetProcessHeap(), 0, new_this);
return E_OUTOFMEMORY;
}
memcpy((LPVOID)new_this->categories, This->categories, size);
/* FIXME: could we more efficiently use DuplicateHandle? */
RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &new_this->key);
new_this->next_index = This->next_index;
*ppenum = (LPENUMGUID)new_this;
return S_OK;
}
ICOM_VTABLE(IEnumGUID) COMCAT_CLSID_IEnumGUID_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
COMCAT_CLSID_IEnumGUID_QueryInterface,
COMCAT_CLSID_IEnumGUID_AddRef,
COMCAT_CLSID_IEnumGUID_Release,
COMCAT_CLSID_IEnumGUID_Next,
COMCAT_CLSID_IEnumGUID_Skip,
COMCAT_CLSID_IEnumGUID_Reset,
COMCAT_CLSID_IEnumGUID_Clone
};
static LPENUMGUID COMCAT_CLSID_IEnumGUID_Construct(
struct class_categories const* categories)
{
CLSID_IEnumGUIDImpl *This;
This = (CLSID_IEnumGUIDImpl *) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLSID_IEnumGUIDImpl));
if (This) {
WCHAR keyname[6] = { 'C', 'L', 'S', 'I', 'D', 0 };
ICOM_VTBL(This) = &COMCAT_CLSID_IEnumGUID_Vtbl;
This->categories = categories;
RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &This->key);
}
return (LPENUMGUID)This;
}
/**********************************************************************
* CategoriesOfClass IEnumCATID (IEnumGUID) implementation
*
* This implementation is not thread-safe. The manager itself is, but
* I can't imagine a valid use of an enumerator in several threads.
*/
typedef struct
{
ICOM_VFIELD(IEnumGUID);
DWORD ref;
WCHAR keyname[68];
HKEY key;
DWORD next_index;
} CATID_IEnumGUIDImpl;
static ULONG WINAPI COMCAT_CATID_IEnumGUID_AddRef(LPENUMGUID iface)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
return ++(This->ref);
}
static HRESULT WINAPI COMCAT_CATID_IEnumGUID_QueryInterface(
LPENUMGUID iface,
REFIID riid,
LPVOID *ppvObj)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
if (This == NULL || ppvObj == NULL) return E_POINTER;
if (IsEqualGUID(riid, &IID_IUnknown) ||
IsEqualGUID(riid, &IID_IEnumGUID))
{
*ppvObj = (LPVOID)iface;
COMCAT_CATID_IEnumGUID_AddRef(iface);
return S_OK;
}
return E_NOINTERFACE;
}
static ULONG WINAPI COMCAT_CATID_IEnumGUID_Release(LPENUMGUID iface)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
if (--(This->ref) == 0) {
if (This->key) RegCloseKey(This->key);
HeapFree(GetProcessHeap(), 0, This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI COMCAT_CATID_IEnumGUID_Next(
LPENUMGUID iface,
ULONG celt,
GUID *rgelt,
ULONG *pceltFetched)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
ULONG fetched = 0;
TRACE("\n");
if (This == NULL || rgelt == NULL) return E_POINTER;
if (This->key) while (fetched < celt) {
HRESULT res;
WCHAR catid[39];
DWORD cName = 39;
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);
res = CLSIDFromString(catid, rgelt);
if (FAILED(res)) continue;
++fetched;
++rgelt;
}
if (pceltFetched) *pceltFetched = fetched;
return fetched == celt ? S_OK : S_FALSE;
}
static HRESULT WINAPI COMCAT_CATID_IEnumGUID_Skip(
LPENUMGUID iface,
ULONG celt)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
This->next_index += celt;
FIXME("Never returns S_FALSE\n");
return S_OK;
}
static HRESULT WINAPI COMCAT_CATID_IEnumGUID_Reset(LPENUMGUID iface)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
This->next_index = 0;
return S_OK;
}
static HRESULT WINAPI COMCAT_CATID_IEnumGUID_Clone(
LPENUMGUID iface,
IEnumGUID **ppenum)
{
ICOM_THIS(CATID_IEnumGUIDImpl, iface);
CATID_IEnumGUIDImpl *new_this;
TRACE("\n");
if (This == NULL || ppenum == NULL) return E_POINTER;
new_this = (CATID_IEnumGUIDImpl *) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CATID_IEnumGUIDImpl));
if (new_this == NULL) return E_OUTOFMEMORY;
ICOM_VTBL(new_this) = ICOM_VTBL(This);
new_this->ref = 1;
lstrcpyW(new_this->keyname, This->keyname);
/* FIXME: could we more efficiently use DuplicateHandle? */
RegOpenKeyExW(HKEY_CLASSES_ROOT, new_this->keyname, 0, KEY_READ, &new_this->key);
new_this->next_index = This->next_index;
*ppenum = (LPENUMGUID)new_this;
return S_OK;
}
ICOM_VTABLE(IEnumGUID) COMCAT_CATID_IEnumGUID_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
COMCAT_CATID_IEnumGUID_QueryInterface,
COMCAT_CATID_IEnumGUID_AddRef,
COMCAT_CATID_IEnumGUID_Release,
COMCAT_CATID_IEnumGUID_Next,
COMCAT_CATID_IEnumGUID_Skip,
COMCAT_CATID_IEnumGUID_Reset,
COMCAT_CATID_IEnumGUID_Clone
};
static LPENUMGUID COMCAT_CATID_IEnumGUID_Construct(
REFCLSID rclsid, LPCWSTR postfix)
{
CATID_IEnumGUIDImpl *This;
This = (CATID_IEnumGUIDImpl *) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CATID_IEnumGUIDImpl));
if (This) {
WCHAR prefix[6] = { 'C', 'L', 'S', 'I', 'D', '\\' };
ICOM_VTBL(This) = &COMCAT_CATID_IEnumGUID_Vtbl;
memcpy(This->keyname, prefix, sizeof prefix);
StringFromGUID2(rclsid, This->keyname + 6, 39);
lstrcpyW(This->keyname + 44, postfix);
RegOpenKeyExW(HKEY_CLASSES_ROOT, This->keyname, 0, KEY_READ, &This->key);
}
return (LPENUMGUID)This;
}