examples: Connect Quit action to QCoreApplication::quit, not QWidget::close

Pick-to: 6.5
Change-Id: I44ca7b61a4a261a7d3aad0dfeb870eb927ee768d
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

4 files changed, 5 insertions, 4 deletions

diff --git a/examples/network/broadcastreceiver/receiver.cpp b/examples/network/broadcastreceiver/receiver.cpp
index caa05ac45a..ffade9992c 100644
--- a/examples/network/broadcastreceiver/receiver.cpp
+++ b/examples/network/broadcastreceiver/receiver.cpp
@@ -5,6 +5,7 @@
 #include <QPushButton>
 #include <QUdpSocket>
 #include <QVBoxLayout>
+#include <QCoreApplication>
 
 #include "receiver.h"
 
@@ -26,7 +27,7 @@ Receiver::Receiver(QWidget *parent)
             this, &Receiver::processPendingDatagrams);
 //! [1]
     connect(quitButton, &QPushButton::clicked,
-            this, &Receiver::close);
+            qApp, &QCoreApplication::quit);
 
     auto buttonLayout = new QHBoxLayout;
     buttonLayout->addStretch(1);
diff --git a/examples/network/broadcastsender/sender.cpp b/examples/network/broadcastsender/sender.cpp
index 7aa416ad6c..622d3f9616 100644
--- a/examples/network/broadcastsender/sender.cpp
+++ b/examples/network/broadcastsender/sender.cpp
@@ -25,7 +25,7 @@ Sender::Sender(QWidget *parent)
 //! [0]
 
     connect(startButton, &QPushButton::clicked, this, &Sender::startBroadcasting);
-    connect(quitButton, &QPushButton::clicked, this, &Sender::close);
+    connect(quitButton, &QPushButton::clicked, qApp, &QCoreApplication::quit);
     connect(&timer, &QTimer::timeout, this, &Sender::broadcastDatagram);
 
     auto mainLayout = new QVBoxLayout;
diff --git a/examples/network/loopback/dialog.cpp b/examples/network/loopback/dialog.cpp
index d1673d3338..f2391fd5b8 100644
--- a/examples/network/loopback/dialog.cpp
+++ b/examples/network/loopback/dialog.cpp
@@ -25,7 +25,7 @@ Dialog::Dialog(QWidget *parent)
     buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
 
     connect(startButton, &QAbstractButton::clicked, this, &Dialog::start);
-    connect(quitButton, &QAbstractButton::clicked, this, &QWidget::close);
+    connect(quitButton, &QAbstractButton::clicked, qApp, &QCoreApplication::quit);
     connect(&tcpServer, &QTcpServer::newConnection,
             this, &Dialog::acceptConnection);
     connect(&tcpClient, &QAbstractSocket::connected, this, &Dialog::startTransfer);
diff --git a/examples/network/multicastreceiver/receiver.cpp b/examples/network/multicastreceiver/receiver.cpp
index 2a49553875..0ebeed8316 100644
--- a/examples/network/multicastreceiver/receiver.cpp
+++ b/examples/network/multicastreceiver/receiver.cpp
@@ -38,7 +38,7 @@ Receiver::Receiver(QWidget *parent)
     connect(&udpSocket6, &QUdpSocket::readyRead,
             this, &Receiver::processPendingDatagrams);
     connect(quitButton, &QPushButton::clicked,
-            this, &Receiver::close);
+            qApp, &QCoreApplication::quit);
 }
 
 void Receiver::processPendingDatagrams()