From cee94658d686d22d28a1fef849eb916e494e67e2 Mon Sep 17 00:00:00 2001
From: Volker Hilsheimer <volker.hilsheimer@qt.io>
Date: Thu, 2 May 2024 21:45:16 +0200
Subject: [PATCH] Windows: handle theme changes synchronously when settings
 change
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The handleSettingsChange handler is usually already executed through the
event loop. And if it is called directly e.g. when changing settings
programmatically, then all side effects of the change should be in
effect immediately.

Task-number: QTBUG-124490
Change-Id: I243772860b1137ef9fe712c4b0d1c88593d2bdb4
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
---
 src/plugins/platforms/windows/qwindowstheme.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/platforms/windows/qwindowstheme.cpp b/src/plugins/platforms/windows/qwindowstheme.cpp
index a2224b1eac..e8a324aedb 100644
--- a/src/plugins/platforms/windows/qwindowstheme.cpp
+++ b/src/plugins/platforms/windows/qwindowstheme.cpp
@@ -561,7 +561,7 @@ void QWindowsTheme::handleSettingsChanged()
     integration->updateApplicationBadge();
     if (integration->darkModeHandling().testFlag(QWindowsApplication::DarkModeStyle)) {
         QWindowsTheme::instance()->refresh();
-        QWindowSystemInterface::handleThemeChange();
+        QWindowSystemInterface::handleThemeChange<QWindowSystemInterface::SynchronousDelivery>();
     }
     if (colorSchemeChanged) {
         for (QWindowsWindow *w : std::as_const(QWindowsContext::instance()->windows()))