BCGControlBar Pro for MFC
BOOL CBCGPDockingControlBar::SetEmbedded ( CWnd *  pWndEmbedded)

Specifies the docking control bar embedded window.

Call this method to specify the docking control bar embedded window. The embedded window should be created as a child of the docking control bar, and it will cover the whole client area of the bar and will be automatically resized when the bar is being resized.

Parameters
pWndEmbeddedA pointer to the docking bar embedded window.