Update Bluetooth examples for high-DPI displays and nullptr

This change sets the Qt::AA_EnableHighDpiScaling application attribute.
It also uses nullptr to initialize pointers and adds a trivial
optimization to the low energy scanner example.

Change-Id: Ia923573ad78108a2a6a72be4c0948ea97a7ec094
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
 

2 files changed, 2 insertions, 1 deletions

diff --git a/examples/bluetooth/picturetransfer/filetransfer.h b/examples/bluetooth/picturetransfer/filetransfer.h
index 5e2e08f9..4dee32fe 100644
--- a/examples/bluetooth/picturetransfer/filetransfer.h
+++ b/examples/bluetooth/picturetransfer/filetransfer.h
@@ -59,7 +59,7 @@ class FileTransfer : public QObject
     Q_OBJECT
     Q_PROPERTY(float progress READ getProgress NOTIFY progressChanged)
 public:
-    explicit FileTransfer(QObject *parent = 0);
+    explicit FileTransfer(QObject *parent = nullptr);
     float getProgress() { return m_progress;}
 
 signals:
diff --git a/examples/bluetooth/picturetransfer/main.cpp b/examples/bluetooth/picturetransfer/main.cpp
index b4a1e670..4622e87e 100644
--- a/examples/bluetooth/picturetransfer/main.cpp
+++ b/examples/bluetooth/picturetransfer/main.cpp
@@ -58,6 +58,7 @@
 
 int main(int argc, char *argv[])
 {
+    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QGuiApplication application(argc, argv);
 //! [Transfer-2]
     QQuickView view;