BCGControlBar Pro for MFC
void CBCGPRibbonButtonsGroup::SetImagesSimplifiedMode ( CBCGPToolBarImages pImages,
CBCGPToolBarImages pHotImages,
CBCGPToolBarImages pDisabledImages,
BOOL  bDontScaleInHighDPIMode = FALSE 
)

Assigns images displayed in the Ribbon simplified mode to buttons in group.

Parameters
pImagesRegular images.
pHotImagesHot images.
pDisabledImagesDisabled images.
bDontScaleInHighDPIModeSet this parameter to TRUE if you wish to prevent image scaling in high DPI mode.