怎么初始化CCreateContext

初始: CChildFrame *childFrame=new CChildFrame();
CCreateContext context;
CTestMDIDoc *doc= new CTestMDIDoc();
CMainFrame *maiFram=new CMainFrame();
context.m_pCurrentDoc=doc;
context.m_pNewViewClass=RUNTIME_CLASS(CMyTestFormView);
context.m_pNewDocTemplate=((CMainFrame *)AfxGetMainWnd())->GetActiveDocument()->m_pDocTemplate;
context.m_pLastView=(maiFram ? maiFram->GetActiveView(): NULL);
context.m_pCurrentFrame=maiFram;这里怎么初始化我想得到App中的: CMultiDocTemplate* pDocTemplate;,在不context.m_pNewDocTemplate怎么付值.
谢谢回复!!