1 files changed, 14 insertions, 5 deletions
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.h b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.h
index 5e6d430f1a..8f886510b4 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.h
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.h
@@ -12,18 +12,27 @@
 
 QT_BEGIN_NAMESPACE
 
+namespace QtPrivate {
+
+template <>
+struct QComObjectTraits<ITextProvider2>
+{
+    static constexpr bool isGuidOf(REFIID riid) noexcept
+    {
+        return QComObjectTraits<ITextProvider2, ITextProvider>::isGuidOf(riid);
+    }
+};
+
+} // namespace QtPrivate
+
 // Implements the Text control pattern provider. Used for text controls.
-class QWindowsUiaTextProvider : public QWindowsUiaBaseProvider,
-                                public QWindowsComBase<ITextProvider2>
+class QWindowsUiaTextProvider : public QWindowsUiaBaseProvider, public QComObject<ITextProvider2>
 {
     Q_DISABLE_COPY_MOVE(QWindowsUiaTextProvider)
 public:
     explicit QWindowsUiaTextProvider(QAccessible::Id id);
     ~QWindowsUiaTextProvider();
 
-    // IUnknown overrides
-    HRESULT STDMETHODCALLTYPE QueryInterface(REFIID id, LPVOID *iface) override;
-
     // ITextProvider
     HRESULT STDMETHODCALLTYPE GetSelection(SAFEARRAY **pRetVal) override;
     HRESULT STDMETHODCALLTYPE GetVisibleRanges(SAFEARRAY **pRetVal) override;