From 5ed1dcd1cc3adf26c591eefc161495a4c313d15d Mon Sep 17 00:00:00 2001
From: Lars Schmertmann <Lars.Schmertmann@governikus.de>
Date: Thu, 13 Mar 2025 12:55:05 +0100
Subject: [PATCH] Fix usage of API functions on Windows 1607 (Build 14393)

* Windows Server 2016, Windows 10 LTSB 2016 and Windows 10 version 1607:
  SetThreadDescription is only available by Run Time Dynamic Linking in
  KernelBase.dll. See [1].
* According to [2] UiaRaiseNotificationEvent should be available on
  Windows Server 2016 but in fact it is not.

[1] https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-setthreaddescription
[2] https://learn.microsoft.com/de-de/windows/win32/api/uiautomationcoreapi/nf-uiautomationcoreapi-uiaraisenotificationevent

Fixes: QTBUG-134075
Pick-to: 6.9.0 6.8 6.8.3
Change-Id: I3c4c733a4112a72b75f91f017a278dff2454e100
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit a9e251332cbec0f64c9c085349836af7276c55d3)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/corelib/thread/qthread_win.cpp                 | 14 ++++++++++++++
 .../uiautomation/qwindowsuiamainprovider.cpp       | 14 ++++++++++++++
 .../windows/uiautomation/qwindowsuiautomation.cpp  |  4 ++--
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/corelib/thread/qthread_win.cpp b/src/corelib/thread/qthread_win.cpp
index 3b9b8871e22..77868b13a04 100644
--- a/src/corelib/thread/qthread_win.cpp
+++ b/src/corelib/thread/qthread_win.cpp
@@ -165,7 +165,21 @@ unsigned int __stdcall QT_ENSURE_STACK_ALIGNED_FOR_SSE QThreadPrivate::start(voi
     QString threadName = std::exchange(thr->d_func()->objectName, {});
     if (Q_LIKELY(threadName.isEmpty()))
         threadName = QString::fromUtf8(thr->metaObject()->className());
+#ifndef QT_WIN_SERVER_2016_COMPAT
     SetThreadDescription(GetCurrentThread(), reinterpret_cast<const wchar_t *>(threadName.utf16()));
+#else
+    HMODULE kernelbase = GetModuleHandleW(L"kernelbase.dll");
+    if (kernelbase != NULL) {
+        typedef HRESULT (WINAPI *DESCFUNC)(HANDLE, PCWSTR);
+
+        DESCFUNC setThreadDescription =
+            (DESCFUNC)GetProcAddress(kernelbase, "SetThreadDescription");
+        if (setThreadDescription != NULL) {
+            setThreadDescription(GetCurrentThread(),
+                                 reinterpret_cast<const wchar_t *>(threadName.utf16()));
+        }
+    }
+#endif
 
     emit thr->started(QThread::QPrivateSignal());
     QThread::setTerminationEnabled(true);
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
index 89c186a2026..50f5f7b2c7f 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
@@ -212,9 +212,23 @@ void QWindowsUiaMainProvider::raiseNotification(QAccessibleAnnouncementEvent *ev
                     ? NotificationProcessing_ImportantAll
                     : NotificationProcessing_All;
             QBStr activityId{ QString::fromLatin1("") };
+#if !defined(Q_CC_MSVC) || !defined(QT_WIN_SERVER_2016_COMPAT)
             UiaRaiseNotificationEvent(provider.Get(), NotificationKind_Other, processing, message.bstr(),
                                       activityId.bstr());
+#else
+            HMODULE uiautomationcore = GetModuleHandleW(L"UIAutomationCore.dll");
+            if (uiautomationcore != NULL) {
+                typedef HRESULT (WINAPI *EVENTFUNC)(IRawElementProviderSimple *, NotificationKind,
+                                                    NotificationProcessing, BSTR, BSTR);
 
+                EVENTFUNC uiaRaiseNotificationEvent =
+                    (EVENTFUNC)GetProcAddress(uiautomationcore, "UiaRaiseNotificationEvent");
+                if (uiaRaiseNotificationEvent != NULL) {
+                    uiaRaiseNotificationEvent(provider.Get(), NotificationKind_Other, processing,
+                                              message.bstr(), activityId.bstr());
+                }
+            }
+#endif
         }
     }
 }
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiautomation.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiautomation.cpp
index 5d580a6155b..7b1dbc42f5e 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiautomation.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiautomation.cpp
@@ -6,7 +6,7 @@
 
 #include "qwindowsuiautomation.h"
 
-#if defined(__MINGW32__) || defined(__MINGW64__)
+#ifndef Q_CC_MSVC
 
 template<typename T, typename... TArg>
 struct winapi_func
@@ -78,6 +78,6 @@ HRESULT WINAPI UiaRaiseNotificationEvent(
     return func.invoke(pProvider, notificationKind, notificationProcessing, displayString, activityId);
 }
 
-#endif // defined(__MINGW32__) || defined(__MINGW64__)
+#endif // !Q_CC_MSVC
 
 #endif // QT_CONFIG(accessibility)