BCGControlBar Pro for MFC
void CBCGPDockingControlBar::EnableAutohideAll ( BOOL  bEnable = TRUE)

Enables/disables auto-hide mode

Enables or disables an ability to be put into autohide mode along with other control bars in container, when the user presses pin button holding Ctrl key.

When the user holds Ctrl key and clicks the pin button to switch a control bar to autohide mode, all other control bars in the same container also will be switched in autohide mode.

Call EnableAutohideAll() with bEnable set to FALSE to disable this feature for a particular control bar.

bEnableTRUE - enable "autohide all" feature for the control bar; FALSE - disable "autohide all" feature for the control bar.