diff --git a/source/SubWindowHandle.cpp b/source/SubWindowHandle.cpp
index 09e1996..9c5f2cb 100644
--- a/source/SubWindowHandle.cpp
+++ b/source/SubWindowHandle.cpp
@@ -54,8 +54,6 @@ SubWindowHandle::SubWindowHandle( QWidget * parent ) :
 
   m_cWindowName = QString( " " );
   m_bIsPlaying = true;
-  m_dScaleFactor = 1;
-
 }
 
 SubWindowHandle::~SubWindowHandle()
@@ -245,8 +243,8 @@ Void SubWindowHandle::stopEvent()
 
 Void SubWindowHandle::normalSize()
 {
-  m_dScaleFactor = 1.0;
-  m_cViewArea->setZoomFactor( m_dScaleFactor );
+  Double scaleFactor = 1.0;
+  m_cViewArea->setZoomFactor( scaleFactor );
 }
 
 Void SubWindowHandle::zoomToFit()
@@ -264,9 +262,10 @@ Void SubWindowHandle::zoomToFit()
 Void SubWindowHandle::scaleView( Double factor )
 {
   Q_ASSERT( m_cViewArea->image() );
-  m_dScaleFactor *= factor;
-  m_cViewArea->setZoomFactor( m_dScaleFactor );
-  adjustScrollBar( m_dScaleFactor );
+  Double scaleFactor = m_cViewArea->getZoomFactor();
+  scaleFactor *= factor;
+  m_cViewArea->setZoomFactor( scaleFactor );
+  adjustScrollBar( scaleFactor );
 }
 
 Void SubWindowHandle::scaleView( Int width, Int height )
@@ -283,7 +282,6 @@ Void SubWindowHandle::scaleView( const QSize & size )
   // Calc the zoom factor
   Double wfactor = 1;
   Double hfactor = 1;
-  m_dScaleFactor = 1;
 
   wfactor = ( Double )newSize.width() / imgViewSize.width();
   hfactor = ( Double )newSize.height() / imgViewSize.height();
diff --git a/source/SubWindowHandle.h b/source/SubWindowHandle.h
index 11e90a2..0ac667a 100644
--- a/source/SubWindowHandle.h
+++ b/source/SubWindowHandle.h
@@ -57,8 +57,6 @@ private:
   QString m_cWindowName;
   QString m_cCurrFileName;
 
-  Double m_dScaleFactor;
-
   Bool m_bIsPlaying;
 
 public:
@@ -124,7 +122,7 @@ public:
 
   Double getScaleFactor()
   {
-    return m_dScaleFactor;
+    return m_cViewArea->getZoomFactor();
   }
 
   QSize sizeHint() const;
diff --git a/source/ViewArea.cpp b/source/ViewArea.cpp
index 8949957..c64a16e 100755
--- a/source/ViewArea.cpp
+++ b/source/ViewArea.cpp
@@ -91,6 +91,12 @@ void ViewArea::clearMask()
   m_mask.clear();
 }
 
+Double ViewArea::getZoomFactor()
+{
+  return m_zoomFactor;
+}
+
+
 // QSize ViewArea::sizeHint() const
 // {
 //     int w = m_pixmap.width()*m_zoomFactor;
@@ -103,6 +109,12 @@ void ViewArea::setZoomFactor( double f )
   //if( f == m_zoomFactor )
     //return;
 
+  if( f < ( 32.0 / m_pixmap.width() ) )
+    f = 32.0 / m_pixmap.width();
+
+  if( f > 10.0 )
+    f = 10.0;
+
   m_zoomFactor = f;
   //emit( zoomFactorChanged( m_zoomFactor ) );
 
@@ -423,8 +435,6 @@ void ViewArea::wheelEvent( QWheelEvent *event )
   double f;
 
   f = m_zoomFactor + 0.001 * event->delta();
-  if( f < ( 32.0 / m_pixmap.width() ) )
-    f = 32.0 / m_pixmap.width();
 
   setZoomFactor( f );
 
diff --git a/source/ViewArea.h b/source/ViewArea.h
index 82d8469..0b8a346 100755
--- a/source/ViewArea.h
+++ b/source/ViewArea.h
@@ -30,6 +30,7 @@
 #include <QBitmap>
 #include <QColor>
 
+#include "TypeDef.h"
 #include "GridManager.h"
 
 namespace plaYUVer
@@ -104,6 +105,8 @@ public:
   void setInputStream( InputStream *stream );
   InputStream* getInputStream();
 
+  Double getZoomFactor();
+
 //     QSize sizeHint() const;
 
 signals:
diff --git a/source/plaYUVerApp.cpp b/source/plaYUVerApp.cpp
index fa6cf15..0835a4e 100644
--- a/source/plaYUVerApp.cpp
+++ b/source/plaYUVerApp.cpp
@@ -222,8 +222,8 @@ void plaYUVerApp::scaleFrame( int ratio )
   {
     activeSubWindow()->scaleView( ( Double )( ratio ) / 100.0 );
 
-    actionZoomIn->setEnabled( activeSubWindow()->getScaleFactor() < 3.0 );
-    actionZoomOut->setEnabled( activeSubWindow()->getScaleFactor() > 0.333 );
+//    actionZoomIn->setEnabled( activeSubWindow()->getScaleFactor() < 3.0 );
+//    actionZoomOut->setEnabled( activeSubWindow()->getScaleFactor() > 0.333 );
   }
 }