切分窗口后怎么再重新连接到视图

[czk037]

我在SDI中将窗口切分为3部分：
````````````````````````````
1 ` 2 `
` `
```````````````````
` 3 `
` `
````````````````````````````
1为TreeView，2、3为FormView。
我要点击1，在3中显示不同类型的内容，所以要将视图3更换为另外的视图4或5。
我这样实现：
CCreateContext context;
CDocument* pDoc = ((CView*)m_wndSplitterH.GetPane(1, 0))->GetDocument();

CView* pOldView = (CView*)m_wndSplitterH.GetPane(1, 0);//m_wndSplitterH为
//水平的splitterbar
pOldView->DestroyWindow();
CView* pNewActiveView = pNewActiveView = (CView*)GetDlgItem(IDD_FORM4);
if (NULL == pNewActiveView)
pNewActiveView = (CView*)new CForm4View;

[czk037]

context.m_pNewViewClass = pNewActiveView->GetRuntimeClass();
context.m_pCurrentDoc = pDoc;

m_wndSplitterH.CreateView(1, 0, pNewActiveView->GetRuntimeClass(), CSize(100,100), &context);
m_wndSplitterH.GetPane(1, 0)->SendMessage(WM_PAINT);

RecalcLayout();

[dazedase]

http://www.vckbase.com/code/winview/splitter/switchviews_in_splitter.zip

[czk037]

为什么新的视图不正常显示呢？ 它不在视图3的位置，而是在视图2的位置，将视图2给覆盖了。
是不是用CreateStatic后就不能重新分配区域给新的视图了？