如何在OnSize中调整SplitterWnd的大小？

[hillfree]

我是这么做的：在Cmainframe中加入了OnSize函数，代码如下：
void CMainFrame::OnSize(UINT nType, int cx, int cy)
{
CRect rc;
GetClientRect(&rc);

int w1 = rc.Width() * 2/3;
int w2 = rc.Width() /3;

m_wndSplitter1.SetColumnInfo(0, w1, 0);
m_wndSplitter1.SetColumnInfo(1, w2, 0);

m_wndSplitter1.RecalcLayout();
}
结果总是出现：Unhandled exception in myapp.exe(MFC42D.DLL) 0xC0000005: Access Violation.

请各位赐教！多谢。

[dadudu]

BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT /*lpcs*/,
CCreateContext* pContext)
{
....
m_bSplitterCreated=true; //Add this boolean var in CMainFrame
// and set default value to false in
// constructor.
return TRUE;
}


void CMainFrame::OnSize(UINT nType, int cx, int cy)
{
CFrameWnd::OnSize(nType, cx, cy); //Donnot forgot call base class OnSize.
CRect rc;
GetClientRect(&rc);

int w1 = rc.Width() * 2/3;
int w2 = rc.Width() /3;

if( m_bSplitterCreated ) // Check if the splitter created!!!!
{

m_wndSplitter1.SetColumnInfo(0, w1, 0);
m_wndSplitter1.SetColumnInfo(1, w2, 0);

m_wndSplitter1.RecalcLayout();
}
}