diff --git a/examples/player/MainWindow.cpp b/examples/player/MainWindow.cpp
index fb7cda4cb..f0f1d9ceb 100644
--- a/examples/player/MainWindow.cpp
+++ b/examples/player/MainWindow.cpp
@@ -1325,7 +1325,7 @@ void MainWindow::onTimeSliderHover(int pos, int value)
     m_preview->preview();
     const int w = Config::instance().previewWidth();
     const int h = Config::instance().previewHeight();
-    m_preview->setWindowFlags(m_preview->windowFlags() |Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint);
+    m_preview->setWindowFlags(Qt::Tool |Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint);
     m_preview->resize(w, h);
     m_preview->move(gpos - QPoint(w/2, h));
     m_preview->show();
@@ -1333,8 +1333,18 @@ void MainWindow::onTimeSliderHover(int pos, int value)
 
 void MainWindow::onTimeSliderLeave()
 {
-    if (m_preview && m_preview->isVisible())
-        m_preview->hide();
+    /*if (m_preview && m_preview->isVisible())
+        m_preview->hide();*/
+    if (!m_preview)
+    {
+        return;
+    }
+    if (m_preview->isVisible())
+    {
+        m_preview->close();
+    }
+    delete m_preview;
+    m_preview = NULL;
 }
 
 void MainWindow::handleError(const AVError &e)