CMainFrame *pMain=(CMainFrame *)AfxGetApp()->m_pMainWnd;
CGraphView *pView=(CGraphView *)pMain->GetActiveView();
CDC mDC;
mDC.CreateCompatibleDC(pView->GetDC());//pView是主视图的指针
mDC.DeleteDC();//或者ReleaseDC(&mDC)
CGraphView *pView=(CGraphView *)pMain->GetActiveView();
CDC mDC;
mDC.CreateCompatibleDC(pView->GetDC());//pView是主视图的指针
mDC.DeleteDC();//或者ReleaseDC(&mDC)
但pView->GetDC());这句不太好。
CDC mDC;
CDC* pDC = pView->GetDC();
mDC.CreateCompatibleDC(pDC);//pView是主视图的指针
mDC.DeleteDC();//或者ReleaseDC(&mDC)
ReleaseDC(pDC);
这样呢?