I have created a Opencascade Project with CAS.CADE Viewer AppWizard. On the V3d_View Window,I want to put 2 ScrollBars to implement "Pan" function. But these ScrollBars have comflict with V3d_View general functions. For example: when I rotate a object or the view, Redraw() of V3d_view is called, and then the Scrollbars vanish. Where can I put these Scrollbars,in Childfrm or CView? How can I obviate this comflict between V3d_View and Windows Control?