BCGControlBar Pro for MFC
void CBCGPCaptionBar::SetButtonToolTip ( LPCTSTR  lpszToolTip,
LPCTSTR  lpszDescription = NULL 
)

Sets tooltip for the button.

Use this method to set a tooltip for the button. Tooltip may consist of caption and description.

Parameters
lpszToolTipSpecifies tooltip caption.
lpszDescriptionSpecifies tooltip description.