QtBase: compile examples with QT_DISABLE_DEPRECATED_BEFORE=0x050d00

Replace deprecated functions to be able to compile examples with
QT_DISABLE_DEPRECATED_BEFORE=0x050d00

Change-Id: If6b8de31f526320d6a0e2a20bb5f8e26c77f2353
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/examples/widgets/statemachine/trafficlight/main.cpp b/examples/widgets/statemachine/trafficlight/main.cpp
index b348d4f65d..1a7050c28d 100644
--- a/examples/widgets/statemachine/trafficlight/main.cpp
+++ b/examples/widgets/statemachine/trafficlight/main.cpp
@@ -146,13 +146,13 @@ QState *createLightState(LightWidget *light, int duration, QState *parent = 0)
 class TrafficLight : public QWidget
 {
 public:
-    TrafficLight(QWidget *parent = 0)
+    TrafficLight(QWidget *parent = nullptr)
         : QWidget(parent)
     {
         QVBoxLayout *vbox = new QVBoxLayout(this);
-        TrafficLightWidget *widget = new TrafficLightWidget();
+        TrafficLightWidget *widget = new TrafficLightWidget;
         vbox->addWidget(widget);
-        vbox->setMargin(0);
+        vbox->setContentsMargins(QMargins());
 
         QStateMachine *machine = new QStateMachine(this);
         QState *redGoingYellow = createLightState(widget->redLight(), 3000);