视图切换，显示Access violation

[ashleycoder]

void CMainFrame::SwitchViews(UINT nID)
{
    CView  *m_pActiveView=GetActiveView();


	
	CView  *pNewView;
	
	switch(nID)
	{
	   case IDD_SYSTEM:
		   pNewView=(CView*) new CSystem;
		   break;
		   
	   case IDD_TEST:
		   pNewView=(CView*) new CTest;
		   break;
		   
	   case IDD_CALIBRATION:
		   pNewView=(CView*) new CCalibration;
		   break;
		   
	   case IDD_QUALITYCONTROL:
		   pNewView=(CView*) new CQualityControl;
		   break;
	}
    
	
    CCreateContext newContext;
    newContext.m_pNewViewClass = NULL;
    newContext.m_pNewDocTemplate = NULL;
    newContext.m_pLastView = NULL;
    newContext.m_pCurrentFrame = NULL;
    newContext.m_pCurrentDoc = GetActiveDocument();
	
	
	pNewView->Create(NULL,NULL,(AFX_WS_DEFAULT_VIEW & ~WS_VISIBLE),CFrameWnd::rectDefault,this,nID,&newContext);
	pNewView->OnInitialUpdate();
    SetActiveView(pNewView);
    pNewView->ShowWindow(SW_SHOW);
	
	SetWindowLong(pNewView->m_hWnd, GWL_ID,AFX_IDW_PANE_FIRST);
    RecalcLayout();
	
	m_pActiveView->DestroyWindow();
}

调试create这句，显示Access violation
hwnd显示0xccccccc
怎么改呢？
谢谢

[Eleven]

CView  *pNewView = new CNewView; 
	CFrameWnd* pFrame = new CFrameWnd;
       
	CCreateContext newContext;  
	newContext.m_pNewViewClass = NULL; 
    newContext.m_pNewDocTemplate = NULL;  
	newContext.m_pLastView = pNewView;  
	newContext.m_pCurrentFrame = pFrame;   
	newContext.m_pCurrentDoc =NULL;  
	pFrame->Create(NULL, _T("My Windows"), WS_OVERLAPPEDWINDOW, CFrameWnd::rectDefault, NULL, NULL, 0, &newContext);
	pNewView->Create(NULL,NULL, WS_CHILD | WS_VISIBLE,CFrameWnd::rectDefault,pFrame,AFX_IDW_PANE_FIRST,&newContext);   
	pFrame->ShowWindow(SW_SHOW);
	pNewView->OnInitialUpdate();

一般都这么写的

[ashleycoder]

我不小心把IDD写成IDM了！