Windows QPA: Fix missing accessible name change events

Accessible name change events were not being relayed through UI Automation.
This caused changes in the state of combo boxes and possibly other quick
controls to be missed by UI Automation clients. This would result, for
instance, in Narrator not reading the state of a combo box when its current
index was changed with the keyboard.

Fixes: QTBUG-70621
Pick-to: 5.15
Change-Id: I16de0ff2bb0fb5227111d5347c25f442e9b0a533
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
index 3962d2d27f..9808d5481c 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
@@ -200,6 +200,19 @@ void QWindowsUiaMainProvider::notifyValueChange(QAccessibleValueChangeEvent *eve
     }
 }
 
+void QWindowsUiaMainProvider::notifyNameChange(QAccessibleEvent *event)
+{
+    if (QAccessibleInterface *accessible = event->accessibleInterface()) {
+        if (QWindowsUiaMainProvider *provider = providerForAccessible(accessible)) {
+            VARIANT oldVal, newVal;
+            clearVariant(&oldVal);
+            setVariantString(accessible->text(QAccessible::Name), &newVal);
+            QWindowsUiaWrapper::instance()->raiseAutomationPropertyChangedEvent(provider, UIA_NamePropertyId, oldVal, newVal);
+            ::SysFreeString(newVal.bstrVal);
+        }
+    }
+}
+
 void QWindowsUiaMainProvider::notifySelectionChange(QAccessibleEvent *event)
 {
     if (QAccessibleInterface *accessible = event->accessibleInterface()) {