fix weird overlay behavior in Icon Menu example widget

components/iconmenu.cpp

@@ -6,8 +6,7 @@
 MenuOverlay::MenuOverlay(QWidget *parent)
     : QWidget(parent)
 {
-    //setAttribute(Qt::WA_TransparentForMouseEvents);
-    //setAttribute(Qt::WA_NoSystemBackground);
+    setAttribute(Qt::WA_NoSystemBackground);
 }
 
 MenuOverlay::~MenuOverlay()
@@ -32,11 +31,15 @@ IconMenu::~IconMenu()
 {
 }
 
+void IconMenu::setOverlayParent(QWidget *parent)
+{
+    _menuOverlay->setParent(parent);
+}
+
 bool IconMenu::event(QEvent *event)
 {
     if (QEvent::ParentChange == event->type()) {
-        _menuOverlay->setParent(parentWidget());
-
+        setOverlayParent(parentWidget());
         QSize hint = _menu->layout()->sizeHint();
         _menuOverlay->setGeometry(0, 0, hint.width(), hint.height());
     }

components/iconmenu.h

@@ -23,6 +23,8 @@ public:
     explicit IconMenu(const QIcon &icon, QWidget *parent = 0);
     ~IconMenu();
 
+    void setOverlayParent(QWidget *parent);
+
 protected:
     bool event(QEvent *event) Q_DECL_OVERRIDE;
 

examples/iconmenuexamples.cpp

@@ -24,6 +24,7 @@ IconMenuExamples::IconMenuExamples(QWidget *parent)
         frame->setWidget(view);
 
         layout->addWidget(frame);
+        iconMenu->setOverlayParent(frame);
     }
 }