QtNetwork (examples) - update secure socket client example

This patch contains:

- some cosmetic changes to  make example look more like
  modern C++;
- UI initialization code and SSL signals handling were split
  into separate member-functions;
- useless checks 'if (socket)' were deleted;
- widget's minimum size is now fixed + font size
  in 'CertInfo' dialog increased to make it readable.

Change-Id: I7aadb78896832a989494d280d6da0635045f948c
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

1 files changed, 7 insertions, 6 deletions

diff --git a/examples/network/securesocketclient/certificateinfo.h b/examples/network/securesocketclient/certificateinfo.h
index abc56dfbcd..9e079c5603 100644
--- a/examples/network/securesocketclient/certificateinfo.h
+++ b/examples/network/securesocketclient/certificateinfo.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2017 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
@@ -51,8 +51,9 @@
 #ifndef CERTIFICATEINFO_H
 #define CERTIFICATEINFO_H
 
-#include <QtWidgets/QDialog>
-#include <QtNetwork/QSslCertificate>
+#include <QDialog>
+#include <QList>
+#include <QSslCertificate>
 
 QT_BEGIN_NAMESPACE
 class Ui_CertificateInfo;
@@ -62,7 +63,7 @@ class CertificateInfo : public QDialog
 {
     Q_OBJECT
 public:
-    CertificateInfo(QWidget *parent = 0);
+    explicit CertificateInfo(QWidget *parent = nullptr);
     ~CertificateInfo();
 
     void setCertificateChain(const QList<QSslCertificate> &chain);
@@ -71,8 +72,8 @@ private slots:
     void updateCertificateInfo(int index);
 
 private:
-    Ui_CertificateInfo *form;
-    QList<QSslCertificate> chain;
+    Ui_CertificateInfo *form = nullptr;
+    QList<QSslCertificate> certificateChain;
 };
 
 #endif