[PATCH 5/6] combase: Make ProgIDFromCLSID() work in WoW64 setup.

[Dmitry Timoshkov]

Signed-off-by: Dmitry Timoshkov 
---
 dlls/combase/combase.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/dlls/combase/combase.c b/dlls/combase/combase.c
index 3ffd08ab635..fb8f453661f 100644
--- a/dlls/combase/combase.c
+++ b/dlls/combase/combase.c
@@ -315,7 +315,7 @@ HRESULT open_key_for_clsid(REFCLSID clsid, const WCHAR *keyname, REGSAM access,

lstrcpyW(path, clsidW);
     StringFromGUID2(clsid, path + lstrlenW(clsidW), CHARS_IN_GUID);
-    res = open_classes_key(HKEY_CLASSES_ROOT, path, keyname ? KEY_READ : access, &key);
+    res = open_classes_key(HKEY_CLASSES_ROOT, path, access, &key);
     if (res == ERROR_FILE_NOT_FOUND)
         return REGDB_E_CLASSNOTREG;
     else if (res != ERROR_SUCCESS)
@@ -1249,6 +1249,8 @@ HRESULT WINAPI DECLSPEC_HOTPATCH ProgIDFromCLSID(REFCLSID clsid, LPOLESTR *progi
     ACTCTX_SECTION_KEYED_DATA data;
     LONG progidlen = 0;
     HKEY hkey;
+    REGSAM opposite = (sizeof(void *) > sizeof(int)) ? KEY_WOW64_32KEY : KEY_WOW64_64KEY;
+    BOOL is_wow64;
     HRESULT hr;

if (!progid)
@@ -1277,8 +1279,12 @@ HRESULT WINAPI DECLSPEC_HOTPATCH ProgIDFromCLSID(REFCLSID clsid, LPOLESTR *progi
     }

hr = open_key_for_clsid(clsid, L"ProgID", KEY_READ, &hkey);
-    if (FAILED(hr))
-        return hr;
+    if (FAILED(hr) && (opposite == KEY_WOW64_32KEY || (IsWow64Process(GetCurrentProcess(), &is_wow64) && is_wow64)))
+    {
+        hr = open_key_for_clsid(clsid, L"ProgID", opposite | KEY_READ, &hkey);
+        if (FAILED(hr))
+            return hr;
+    }

if (RegQueryValueW(hkey, NULL, NULL, &progidlen))
         hr = REGDB_E_CLASSNOTREG;
@@ -2322,7 +2328,7 @@ HRESULT WINAPI CoGetPSClsid(REFIID riid, CLSID *pclsid)

hr = get_ps_clsid_from_registry(path, 0, pclsid);
     if (FAILED(hr) && (opposite == KEY_WOW64_32KEY || (IsWow64Process(GetCurrentProcess(), &is_wow64) && is_wow64)))
-        hr = get_ps_clsid_from_registry(path, opposite, pclsid);
+        hr = get_ps_clsid_from_registry(path, opposite | KEY_READ, pclsid);

if (hr == S_OK)
         TRACE("() Returning CLSID %s\n", debugstr_guid(pclsid));