[PATCH 2/3] combase: Make ProgIDFromCLSID() work in WoW64 setup.
Dmitry Timoshkov
dmitry at baikal.ru
Wed Mar 16 05:14:41 CDT 2022
Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
---
dlls/combase/combase.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/dlls/combase/combase.c b/dlls/combase/combase.c
index de2375fba78..8133408559f 100644
--- a/dlls/combase/combase.c
+++ b/dlls/combase/combase.c
@@ -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;
--
2.35.1
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