[PATCH 3/5] uiautomationcore: Implement UIA_ProcessIdPropertyId for default HWND provider.

[Connor McAdams]

From: Connor McAdams

Signed-off-by: Connor McAdams 
---
 dlls/uiautomationcore/tests/uiautomation.c |  5 ++---
 dlls/uiautomationcore/uia_provider.c       | 25 ++++++++++++++++++++++
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/dlls/uiautomationcore/tests/uiautomation.c b/dlls/uiautomationcore/tests/uiautomation.c
index da9bb6aa5c9..009864d10c7 100644
--- a/dlls/uiautomationcore/tests/uiautomation.c
+++ b/dlls/uiautomationcore/tests/uiautomation.c
@@ -12357,9 +12357,8 @@ static void test_node_hwnd_provider_(HUIANODE node, HWND hwnd, const char *file,
     winetest_push_context("UIA_ProcessIdPropertyId");
     hr = UiaGetPropertyValue(node, UIA_ProcessIdPropertyId, &v);
     ok_(file, line)(hr == S_OK, "Unexpected hr %#lx\n", hr);
-    todo_wine ok_(file, line)(V_VT(&v) == VT_I4, "Unexpected VT %d\n", V_VT(&v));
-    if (V_VT(&v) == VT_I4)
-        ok_(file, line)(V_I4(&v) == pid, "V_I4(&v) = %#lx, expected %#lx\n", V_I4(&v), pid);
+    ok_(file, line)(V_VT(&v) == VT_I4, "Unexpected VT %d\n", V_VT(&v));
+    ok_(file, line)(V_I4(&v) == pid, "V_I4(&v) = %#lx, expected %#lx\n", V_I4(&v), pid);
     VariantClear(&v);
     winetest_pop_context();
 }
diff --git a/dlls/uiautomationcore/uia_provider.c b/dlls/uiautomationcore/uia_provider.c
index 4d081b2c921..1f5cce7ffed 100644
--- a/dlls/uiautomationcore/uia_provider.c
+++ b/dlls/uiautomationcore/uia_provider.c
@@ -1202,6 +1202,16 @@ HRESULT WINAPI UiaProviderFromIAccessible(IAccessible *acc, long child_id, DWORD
     return S_OK;
 }

+static HRESULT uia_get_hr_for_last_error(void)
+{
+    DWORD last_err = GetLastError();
+
+    if (last_err == ERROR_INVALID_WINDOW_HANDLE)
+        return UIA_E_ELEMENTNOTAVAILABLE;
+
+    return HRESULT_FROM_WIN32(last_err);
+}
+
 /*
  * Default ProviderType_BaseHwnd IRawElementProviderSimple interface.
  */
@@ -1292,6 +1302,21 @@ static HRESULT WINAPI base_hwnd_provider_GetPropertyValue(IRawElementProviderSim
         V_I4(ret_val) = HandleToUlong(base_hwnd_prov->hwnd);
         break;

+    case UIA_ProcessIdPropertyId:
+    {
+        DWORD pid;
+
+        SetLastError(NOERROR);
+        if (!GetWindowThreadProcessId(base_hwnd_prov->hwnd, &pid))
+            hr = uia_get_hr_for_last_error();
+        else
+        {
+            V_VT(ret_val) = VT_I4;
+            V_I4(ret_val) = pid;
+        }
+        break;
+    }
+
     default:
         break;
     }