程序的实现步骤 2.2 5.修改视类成员函数 OnDraw( void CDocView View On Draw(CDC pDc) CDocViewDOc* pDoc= GetDocumento ASSERT VALID(pDoc l/ TODO: add draw code for native data here pDoc->DrawLine(pDC) Doc->Draw Text(pDC)程序的实现步骤 2.2 void CDocViewView::OnDraw(CDC* pDC) { CDocViewDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here pDoc->DrawLine(pDC); pDoc->DrawText(pDC); } 5．修改视类成员函数OnDraw() 返回第2章