Windows QPA: Add support to UiaRaiseNotificationEvent()

This change adds support to UiaRaiseNotificationEvent() in the
UI Automation-based accessibility code, and uses it to notify changes
in string-typed values, allowing Narrator, NVDA and other screen readers
to notice changes in the application state that were previously missed.

Fixes: QTBUG-75003
Change-Id: I646ca3a851ab7b69817d900b002eb91a3bf607a6
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/platformsupport/windowsuiautomation/qwindowsuiawrapper_p.h b/src/platformsupport/windowsuiautomation/qwindowsuiawrapper_p.h
index 3ebc3008d3..9208acbc31 100644
--- a/src/platformsupport/windowsuiautomation/qwindowsuiawrapper_p.h
+++ b/src/platformsupport/windowsuiautomation/qwindowsuiawrapper_p.h
@@ -80,17 +80,20 @@ public:
     HRESULT hostProviderFromHwnd(HWND hwnd, IRawElementProviderSimple **ppProvider);
     HRESULT raiseAutomationPropertyChangedEvent(IRawElementProviderSimple *pProvider, PROPERTYID id, VARIANT oldValue, VARIANT newValue);
     HRESULT raiseAutomationEvent(IRawElementProviderSimple *pProvider, EVENTID id);
+    HRESULT raiseNotificationEvent(IRawElementProviderSimple *provider, NotificationKind notificationKind, NotificationProcessing notificationProcessing, BSTR displayString, BSTR activityId);
 
 private:
     typedef LRESULT (WINAPI *PtrUiaReturnRawElementProvider)(HWND, WPARAM, LPARAM, IRawElementProviderSimple *);
     typedef HRESULT (WINAPI *PtrUiaHostProviderFromHwnd)(HWND, IRawElementProviderSimple **);
     typedef HRESULT (WINAPI *PtrUiaRaiseAutomationPropertyChangedEvent)(IRawElementProviderSimple *, PROPERTYID, VARIANT, VARIANT);
     typedef HRESULT (WINAPI *PtrUiaRaiseAutomationEvent)(IRawElementProviderSimple *, EVENTID);
+    typedef HRESULT (WINAPI *PtrUiaRaiseNotificationEvent)(IRawElementProviderSimple *, NotificationKind, NotificationProcessing, BSTR, BSTR);
     typedef BOOL (WINAPI *PtrUiaClientsAreListening)();
     PtrUiaReturnRawElementProvider             m_pUiaReturnRawElementProvider = nullptr;
     PtrUiaHostProviderFromHwnd                 m_pUiaHostProviderFromHwnd = nullptr;
     PtrUiaRaiseAutomationPropertyChangedEvent  m_pUiaRaiseAutomationPropertyChangedEvent = nullptr;
     PtrUiaRaiseAutomationEvent                 m_pUiaRaiseAutomationEvent = nullptr;
+    PtrUiaRaiseNotificationEvent               m_pUiaRaiseNotificationEvent = nullptr;
     PtrUiaClientsAreListening                  m_pUiaClientsAreListening = nullptr;
 };