BCGControlBar Pro for MFC
void CBCGPRibbonBar::SetSystemIconVisible ( BOOL  bVisible = TRUE,
BOOL  bRecalcLayout = TRUE 
)

Specifies whether the system icon is visible.

Parameters
bVisibleTRUE: the system icon is always visible, FALSE - always hidden, BCGP_DEFAULT - specified by visual theme.
bRecalcLayoutSpecifies whether the Ribbon Bar should recalculate layout.