wbemprox: Return an empty array for __DERIVATION.

Based on a patch by Louis Lenders. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51871Signed-off-by: Hans Leidekker <hans@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

wbemprox: Return an empty array for __DERIVATION.
22432290 · Hans Leidekker · Alexandre Julliard · 099a8bbf · 22432290 · 22432290
Commit 22432290 authored Oct 13, 2021 by Hans Leidekker Committed by Alexandre Julliard Oct 13, 2021
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query.c dlls/wbemprox/query.c +13 -0

query.c dlls/wbemprox/tests/query.c +1 -0

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--- a/dlls/wbemprox/query.c
+++ b/dlls/wbemprox/query.c
@@ -1006,6 +1006,19 @@ static HRESULT get_system_propval( const struct view *view, UINT table_index, UI
        if (type) *type = CIM_STRING;
        return S_OK;
    }
+    if (!wcsicmp( name, L"__DERIVATION" ))
+    {
+        if (ret)
+        {
+            SAFEARRAY *sa;
+            FIXME( "returning empty array for __DERIVATION\n" );
+            if (!(sa = SafeArrayCreateVector( VT_BSTR, 0, 0 ))) return E_OUTOFMEMORY;
+            V_VT( ret ) = VT_BSTR | VT_ARRAY;
+            V_ARRAY( ret ) = sa;
+        }
+        if (type) *type = CIM_STRING | CIM_FLAG_ARRAY;
+        return S_OK;
+    }
    FIXME("system property %s not implemented\n", debugstr_w(name));
    return WBEM_E_NOT_FOUND;
 }

--- a/dlls/wbemprox/tests/query.c
+++ b/dlls/wbemprox/tests/query.c
@@ -1642,6 +1642,7 @@ static void test_Win32_VideoController( IWbemServices *services )
        if (hr != S_OK) break;

        check_property( obj, L"__CLASS", VT_BSTR, CIM_STRING );
+        check_property( obj, L"__DERIVATION", VT_BSTR | VT_ARRAY, CIM_STRING | CIM_FLAG_ARRAY );
        check_property( obj, L"__GENUS", VT_I4, CIM_SINT32 );
        check_property( obj, L"__NAMESPACE", VT_BSTR, CIM_STRING );
        check_property( obj, L"__PATH", VT_BSTR, CIM_STRING );