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, 5 insertions, 2 deletions

diff --git a/examples/network/securesocketclient/main.cpp b/examples/network/securesocketclient/main.cpp
index e6dc60736f..e9c413577f 100644
--- a/examples/network/securesocketclient/main.cpp
+++ b/examples/network/securesocketclient/main.cpp
@@ -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.
@@ -50,6 +50,9 @@
 
 #include <QApplication>
 #include <QMessageBox>
+#include <QtNetwork>
+
+QT_REQUIRE_CONFIG(ssl);
 
 #include "sslclient.h"
 
@@ -61,7 +64,7 @@ int main(int argc, char **argv)
 
     if (!QSslSocket::supportsSsl()) {
         QMessageBox::information(0, "Secure Socket Client",
-                                 "This system does not support OpenSSL.");
+                                 "This system does not support SSL/TLS.");
         return -1;
     }