'宣言 Function GetToolTipInfo( _ ByVal mousePosition As Point, _ ByVal element As UIElement, _ ByVal previousToolTipElement As UIElement, _ ByVal toolTipInfoDefault As ToolTipInfo _ ) As ToolTipInfo
ToolTipInfo GetToolTipInfo( Point mousePosition, UIElement element, UIElement previousToolTipElement, ToolTipInfo toolTipInfoDefault )