uiautomationcore: Implement ILegacyIAccessibleProvider::get_Role for MSAA providers.

dlls/uiautomationcore/tests/uiautomation.c

@@ -3556,6 +3556,9 @@ static void test_uia_prov_from_acc_properties(void)
     for (i = 0; i < ARRAY_SIZE(msaa_role_uia_types); i++)
     {
         const struct msaa_role_uia_type *role = &msaa_role_uia_types[i];
+        ILegacyIAccessibleProvider *accprov;
+        DWORD role_val;
+        IUnknown *unk;
 
         /*
          * Roles get cached once a valid one is mapped, so create a new
@@ -3588,6 +3591,22 @@ static void test_uia_prov_from_acc_properties(void)
         if (!role->uia_control_type)
             CHECK_CALLED(Accessible_get_accRole);
 
+        hr = IRawElementProviderSimple_GetPatternProvider(elprov, UIA_LegacyIAccessiblePatternId, &unk);
+        ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+        ok(!!unk, "unk == NULL\n");
+
+        hr = IUnknown_QueryInterface(unk, &IID_ILegacyIAccessibleProvider, (void **)&accprov);
+        IUnknown_Release(unk);
+        ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+        ok(!!accprov, "accprov == NULL\n");
+
+        SET_EXPECT(Accessible_get_accRole);
+        hr = ILegacyIAccessibleProvider_get_Role(accprov, &role_val);
+        ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+        ok(role_val == Accessible.role, "role_val != Accessible.role\n");
+        CHECK_CALLED(Accessible_get_accRole);
+
+        ILegacyIAccessibleProvider_Release(accprov);
         IRawElementProviderSimple_Release(elprov);
         ok(Accessible.ref == 1, "Unexpected refcnt %ld\n", Accessible.ref);
     }

dlls/uiautomationcore/uia_provider.c

@@ -1066,8 +1066,19 @@ static HRESULT WINAPI msaa_acc_provider_get_Description(ILegacyIAccessibleProvid
 
 static HRESULT WINAPI msaa_acc_provider_get_Role(ILegacyIAccessibleProvider *iface, DWORD *out_role)
 {
-    FIXME("%p, %p: stub!\n", iface, out_role);
-    return E_NOTIMPL;
+    struct msaa_provider *msaa_prov = impl_from_msaa_acc_provider(iface);
+    HRESULT hr;
+    VARIANT v;
+
+    TRACE("%p, %p\n", iface, out_role);
+
+    *out_role = 0;
+    VariantInit(&v);
+    hr = IAccessible_get_accRole(msaa_prov->acc, msaa_prov->cid, &v);
+    if (SUCCEEDED(hr) && V_VT(&v) == VT_I4)
+        *out_role = V_I4(&v);
+
+    return S_OK;
 }
 
 static HRESULT WINAPI msaa_acc_provider_get_State(ILegacyIAccessibleProvider *iface, DWORD *out_state)