利用mfc编写activex控件

利用mfc编写activex控件(9)

9．在CSampleCtrl中修改如下代码

         void CSampleCtrl::DoPropExchange(CPropExchange* pPX)

         {

                  ExchangeVersion(pPX, MAKELONG(_wVerMinor, _wVerMajor));

                  COleControl::DoPropExchange(pPX);

                  PX_Bool(pPX, _T("Erase"), FALSE);

         }

         void CSampleCtrl::OnEraseChanged() 

         {

                  InvalidateControl();

                  SetModifiedFlag();

         }

        void CSampleCtrl::OnDraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)