From c09cf578bd7267b867326101cd2d0f39e7c814fe Mon Sep 17 00:00:00 2001
From: David Faure <david.faure@kdab.com>
Date: Mon, 09 Sep 2019 18:12:26 +0200
Subject: [PATCH] QWidget::setFocusProxy: adjust focus widget properly

My commit 3e7463411e adjusted the focus widget by setting
QApplicationPrivate::focus_widget directly, while there is a method for
doing this properly, including setFocus_sys() and emitting signals.

Fixes: QTBUG-77364
Change-Id: I218acf7a9de39173d282ced46def4f65594f80b4
---

diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index cf5a81c..6889c2e 100644
--- qtbase/src/widgets/kernel/qwidget.cpp
+++ qtbase/src/widgets/kernel/qwidget.cpp
@@ -6204,7 +6204,7 @@
 
     if (changingAppFocusWidget) {
         QWidget *newDeepestFocusProxy = d_func()->deepestFocusProxy();
-        QApplicationPrivate::focus_widget = newDeepestFocusProxy ? newDeepestFocusProxy : this;
+        QApplicationPrivate::setFocusWidget(newDeepestFocusProxy ? newDeepestFocusProxy : this, Qt::NoFocusReason);
     }
 }