examples: Mark ctor's as explicit

Make C++ class constructors that can be used with only one
required argument 'explicit' to minimize wrong use of the class.

Change-Id: Ida9f9c2f0c8608c35b0137b2512a6747afd69515
Reviewed-by: Mitch Curtis <mitch.curtis@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

4 files changed, 10 insertions, 10 deletions

diff --git a/examples/widgets/animation/stickman/node.h b/examples/widgets/animation/stickman/node.h
index ae6e2a3ed0..ca04d7813b 100644
--- a/examples/widgets/animation/stickman/node.h
+++ b/examples/widgets/animation/stickman/node.h
@@ -47,7 +47,7 @@ class Node: public QGraphicsObject
 {
     Q_OBJECT
 public:
-    Node(const QPointF &pos, QGraphicsItem *parent = 0);
+    explicit Node(const QPointF &pos, QGraphicsItem *parent = 0);
     ~Node();
 
     QRectF boundingRect() const;
diff --git a/examples/widgets/animation/sub-attaq/boat_p.h b/examples/widgets/animation/sub-attaq/boat_p.h
index 38be985777..03f7df2835 100644
--- a/examples/widgets/animation/sub-attaq/boat_p.h
+++ b/examples/widgets/animation/sub-attaq/boat_p.h
@@ -139,7 +139,7 @@ private:
 class MoveStateRight : public QState
 {
 public:
-    MoveStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
+    explicit MoveStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
     {
     }
 protected:
@@ -156,7 +156,7 @@ private:
 class MoveStateLeft : public QState
 {
 public:
-    MoveStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
+    explicit MoveStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
     {
     }
 protected:
@@ -173,7 +173,7 @@ private:
 class StopState : public QState
 {
 public:
-    StopState(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
+    explicit StopState(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
     {
     }
 protected:
@@ -191,7 +191,7 @@ private:
 class LaunchStateRight : public QState
 {
 public:
-    LaunchStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
+    explicit LaunchStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
     {
     }
 protected:
@@ -212,7 +212,7 @@ private:
 class LaunchStateLeft : public QState
 {
 public:
-    LaunchStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
+    explicit LaunchStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
     {
     }
 protected:
diff --git a/examples/widgets/animation/sub-attaq/states.h b/examples/widgets/animation/sub-attaq/states.h
index e43370302c..98799ddd94 100644
--- a/examples/widgets/animation/sub-attaq/states.h
+++ b/examples/widgets/animation/sub-attaq/states.h
@@ -59,7 +59,7 @@ QT_END_NAMESPACE
 class PlayState : public QState
 {
 public:
-    PlayState(GraphicsScene *scene, QState *parent = 0);
+    explicit PlayState(GraphicsScene *scene, QState *parent = 0);
     ~PlayState();
 
  protected:
@@ -96,7 +96,7 @@ private :
 class PauseState : public QState
 {
 public:
-    PauseState(GraphicsScene *scene, QState *parent = 0);
+    explicit PauseState(GraphicsScene *scene, QState *parent = 0);
 
 protected:
     void onEntry(QEvent *);
diff --git a/examples/widgets/animation/sub-attaq/submarine_p.h b/examples/widgets/animation/sub-attaq/submarine_p.h
index f24487aa17..c9b9829eb6 100644
--- a/examples/widgets/animation/sub-attaq/submarine_p.h
+++ b/examples/widgets/animation/sub-attaq/submarine_p.h
@@ -67,7 +67,7 @@ class MovementState : public QAnimationState
 {
 Q_OBJECT
 public:
-    MovementState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)
+    explicit MovementState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)
     {
         movementAnimation = new QPropertyAnimation(submarine, "pos");
         connect(movementAnimation,SIGNAL(valueChanged(const QVariant &)),this,SLOT(onAnimationMovementValueChanged(const QVariant &)));
@@ -106,7 +106,7 @@ private:
 class ReturnState : public QAnimationState
 {
 public:
-    ReturnState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)
+    explicit ReturnState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)
     {
         returnAnimation = new QPropertyAnimation(submarine->rotation(), "angle");
         returnAnimation->setDuration(500);