CDockingManager::m_bHideDockingBarsInContainerMode
Specifies whether the docking manager hides panes in OLE container mode.
AFX_IMPORT_DATA static BOOL m_bHideDockingBarsInContainerMode;
Remarks
Set this value to FALSE if you want to keep all panes docked to the main frame visible when the application is in OLE container mode. By default, this value is TRUE.
Requirements
Header: afxDockingManager.h