BCGControlBar Pro for MFC
BOOL CBCGPFrameWnd::DockControlBarLeftOf ( CBCGPControlBar pBar,
CBCGPControlBar pLeftOf 

Docks one toolbar at the left side of the other toolbar

Call this member function when you need to dock several toolbars objects in predefined order. It takes the tool bar specified by the pBar parameter and docks it at the left side of the toolbar specified by pLeftOf parameter.

To dock one docking control bar to another use CBCGPDockingControlBar::DockToWindow.

pBarA pointer to the toolbar object to be docked.
pLeftOfA pointer to the toolbar that serves as an origin.