CMFCToolTipInfo::m_clrFill
Specifies the color of tooltip backgrounds.
COLORREF m_clrFill;
Remarks
If CMFCToolTipInfo::m_clrFillGradient is -1, the tooltip background color is m_clrFill. Otherwise, m_clrFill specifies the color of the beginning of the gradient and m_clrFillGradient specifies the color of the end of the gradient. CMFCToolTipInfo::m_nGradientAngle determines the direction of the gradient.
Requirements
Header: afxToolTipCtrl.h