怎么在class CDockWnd : public CControlBar没有显示CEdit m_wndEdit;

以下是部分代码 谢谢了
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
……
if (!m_DockingWnd.Create(this,
CBRS_GRIPPER|WS_CHILD|WS_VISIBLE|CBRS_LEFT|CBRS_SIZE_DYNAMIC, ID_DOCKINGWINDOW))
{
TRACE0("Failed to create custom bar\n");
return FALSE;      // fail to create
}
m_DockingWnd.EnableDocking(CBRS_ALIGN_ANY);if(!m_wndEdit.Create(WS_VSCROLL|WS_CHILD|WS_VISIBLE|ES_AUTOVSCROLL|ES_MULTILINE|ES_WANTRETURN,CRect(0,0,0,0),&m_DockingWnd,101))
    return -1;
……}