1     //MainFrame中获取Doc，通过Doc遍历视图 2     CCR17CADDoc *pDoc = (CCR17CADDoc *)GetActiveDocument(); 3     CCR17CADView *pCADView = NULL; 4     if (pDoc != NULL) 5     { 6         POSITION posView = pDoc->GetFirstViewPosition();  7         while(posView) 8         {       9             CView *pView = (CView *)pDoc->GetNextView(posView);10             //如果是我们要找的视图，设置为当前视图，并跳出循环11             if(pView->IsKindOf(RUNTIME_CLASS(CCR17CADView)))   12             {13                 pCADView = (CCR17CADView *)pView;14                 SetActiveView(pCADView);15                 break;      16             }17         } 18     }