diff --git starmath/inc/view.hxx starmath/inc/view.hxx
index eab2444..b1c30e8 100644
--- starmath/inc/view.hxx
+++ starmath/inc/view.hxx
@@ -35,6 +35,7 @@
 #include <sfx2/viewfac.hxx>
 #include <sfx2/viewfrm.hxx>
 #include <svtools/colorcfg.hxx>
+#include <vcl/virdev.hxx>
 #include "edit.hxx"
 #include "node.hxx"
 #include "accessibility.hxx"
@@ -60,6 +61,8 @@ class SmGraphicWindow : public ScrollableWindow
     USHORT			nZoom;
     short			nModifyCount;
     BOOL			bIsCursorVisible;
+    /** Buffer for drawing formula to (For double buffering) */
+    VirtualDevice   vDev;
 
 protected:
     void		SetFormulaDrawPos(const Point &rPos) { aFormulaDrawPos = rPos; }
@@ -69,6 +72,8 @@ protected:
     void 		SetCursor(const Rectangle &rRect);
 
     virtual void DataChanged( const DataChangedEvent& );
+    /** Paint formula to pDev */
+    virtual void PrePaint();
     virtual void Paint(const Rectangle&);
     virtual void KeyInput(const KeyEvent& rKEvt);
     virtual void Command(const CommandEvent& rCEvt);
diff --git starmath/source/view.cxx starmath/source/view.cxx
index f00036f..fd0f770 100644
--- starmath/source/view.cxx
+++ starmath/source/view.cxx
@@ -99,7 +99,8 @@ SmGraphicWindow::SmGraphicWindow(SmViewShell* pShell):
     pAccessible(0),
     pViewShell(pShell),
     nZoom(100),
-    bIsCursorVisible(FALSE)
+    bIsCursorVisible(FALSE),
+    vDev(*this, 0, 0)
 {
     // docking windows are usually hidden (often already done in the
     // resource) and will be shown by the sfx framework.
@@ -211,6 +212,7 @@ void SmGraphicWindow::MouseButtonDown(const MouseEvent& rMEvt)
             pEdit->GrabFocus();
         }
     }
+    GrabFocus();    //So that we can get KeyInput
 }
 
 void SmGraphicWindow::GetFocus()
@@ -302,17 +304,27 @@ const SmNode * SmGraphicWindow::SetCursorPos(USHORT nRow, USHORT nCol)
     return pNode;
 }
 
-
-void SmGraphicWindow::Paint(const Rectangle&)
+void SmGraphicWindow::PrePaint()
 {
     DBG_ASSERT(pViewShell, "Sm : NULL pointer");
 
+    Size size = pViewShell->GetDoc()->GetFormulaTree()->GetSize();
+    vDev.SetOutputSize(size);
+
     SmDocShell &rDoc = *pViewShell->GetDoc();
     Point aPoint;
 
-    rDoc.Draw(*this, aPoint);	//! modifies aPoint to be the topleft
+    rDoc.Draw(vDev, aPoint);	//! modifies aPoint to be the topleft
                                 //! corner of the formula
     SetFormulaDrawPos(aPoint);
+}
+
+void SmGraphicWindow::Paint(const Rectangle&)
+{
+    DBG_ASSERT(pViewShell, "Sm : NULL pointer");
+
+    Size size = pViewShell->GetDoc()->GetFormulaTree()->GetSize();
+    DrawOutDev(Point(0,0), size, Point(0,0), size, vDev);
 
     SetIsCursorVisible(FALSE);	// (old) cursor must be drawn again
 
@@ -345,6 +357,8 @@ void SmGraphicWindow::KeyInput(const KeyEvent& rKEvt)
 {
     if (! (GetView() && GetView()->KeyInput(rKEvt)) )
         ScrollableWindow::KeyInput(rKEvt);
+    Invalidate(); //to simulate the required repaint at each caret movement or repaint 
+                  //that occurs when a character is entered and the formula changes.
 }