From b06525ddbbe018f3b2dbd51a5c22c68c86b38d4e Mon Sep 17 00:00:00 2001
From: Jarek Kobus <jaroslaw.kobus@qt.io>
Date: Fri, 5 Jan 2024 11:12:46 +0100
Subject: [PATCH] QObject: Make it clear we don't install duplicated event
 filters

Pick-to: 6.5 6.2 5.15
Change-Id: I3048b50700880dd2445a5a65823fef02b196ce7d
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
(cherry picked from commit 43de84644292978f2b8bce209830cf14d5384904)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 31a94ee00dbe95217b3b5ec4267f2304ec2b5631)
---
 src/corelib/kernel/qobject.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp
index 8cfdc4a472e..56118a20851 100644
--- a/src/corelib/kernel/qobject.cpp
+++ b/src/corelib/kernel/qobject.cpp
@@ -2288,6 +2288,9 @@ void QObjectPrivate::setParent_helper(QObject *o)
     If multiple event filters are installed on a single object, the
     filter that was installed last is activated first.
 
+    If \a filterObj has already been installed for this object,
+    this function moves it so it acts as if it was installed last.
+
     Here's a \c KeyPressEater class that eats the key presses of its
     monitored objects: