diff --git a/app/PlaYUVerAppModuleIf.cpp b/app/PlaYUVerAppModuleIf.cpp
index f87eec3..2de6c7b 100644
--- a/app/PlaYUVerAppModuleIf.cpp
+++ b/app/PlaYUVerAppModuleIf.cpp
@@ -58,6 +58,15 @@ Void PlaYUVerAppModuleIf::update()
   }
 }
 
+Bool PlaYUVerAppModuleIf::isRunning()
+{
+#ifdef PLAYUVER_THREADED_MODULES
+  return QThread::isRunning();
+#else
+  return false;
+#endif
+}
+
 Bool PlaYUVerAppModuleIf::apply( Bool isPlaying, Bool disableThreads )
 {
   Bool bRet = false;
diff --git a/app/PlaYUVerAppModuleIf.h b/app/PlaYUVerAppModuleIf.h
index 87c52af..da8bdc7 100644
--- a/app/PlaYUVerAppModuleIf.h
+++ b/app/PlaYUVerAppModuleIf.h
@@ -98,6 +98,7 @@ public:
   UInt getModuleRequirements() { return m_pcModule->m_uiModuleRequirements; }
   Void update();
   Bool apply( Bool isPlaying = false, Bool disableThreads = false );
+  Bool isRunning();
   Void show();
   Void destroy();
 
diff --git a/app/VideoSubWindow.cpp b/app/VideoSubWindow.cpp
index e76b94b..6f84f19 100644
--- a/app/VideoSubWindow.cpp
+++ b/app/VideoSubWindow.cpp
@@ -639,6 +639,20 @@ Void VideoSubWindow::associateModule( PlaYUVerAppModuleIf* pcModule )
   m_apcCurrentModule.append( pcModule );
 }
 
+Bool VideoSubWindow::hasRunningModule()
+{
+	Bool bRet = false;
+  if( m_pcCurrentDisplayModule )
+  {
+		bRet |= m_pcCurrentDisplayModule->isRunning();
+  }
+	for( Int i = 0; i < m_apcCurrentModule.size() && !bRet; i++ )
+  {
+		bRet |= m_apcCurrentModule.at( i )->isRunning();
+  }
+	return bRet;
+}
+
 Void VideoSubWindow::setFillWindow( Bool bFlag )
 {
   m_pcVideoInfo->setBusyWindow( bFlag );
diff --git a/app/VideoSubWindow.h b/app/VideoSubWindow.h
index 913ae2c..1b08e8a 100644
--- a/app/VideoSubWindow.h
+++ b/app/VideoSubWindow.h
@@ -100,25 +100,6 @@ private:
   QFuture<Void> m_cRefreshResult;
   QFuture<Void> m_cReadResult;
 
-  Void refreshFrameOperation();
-  Bool goToNextFrame( Bool bThreaded = false );
-
-  static Bool guessFormat( QString filename,
-                           UInt& rWidth,
-                           UInt& rHeight,
-                           Int& rInputFormat,
-                           UInt& rBitsPerPixel,
-                           Int& rEndianness );
-
-  /**
-   * Private zoom function to handle
-   * zoom to fit
-   */
-  Void scaleView( const QSize& size, QPoint center = QPoint() );
-  Void updateVideoWindowInfo();
-
-  QSize getScrollSize();
-
 public:
   enum VideoSubWindowCategories
   {
@@ -201,6 +182,28 @@ public:
   Void clearWindowBusy() { m_bWindowBusy = false; }
   Void setFillWindow( Bool bFlag );
 
+private:
+  Void refreshFrameOperation();
+  Bool goToNextFrame( Bool bThreaded = false );
+
+  static Bool guessFormat( QString filename,
+                           UInt& rWidth,
+                           UInt& rHeight,
+                           Int& rInputFormat,
+                           UInt& rBitsPerPixel,
+                           Int& rEndianness );
+
+  Bool hasRunningModule();
+
+  /**
+   * Private zoom function to handle
+   * zoom to fit
+   */
+  Void scaleView( const QSize& size, QPoint center = QPoint() );
+  Void updateVideoWindowInfo();
+
+  QSize getScrollSize();
+
 protected:
   Void keyPressEvent( QKeyEvent* event );
   Void resizeEvent( QResizeEvent* event );