'宣言 Function _isHitTested( _ ByVal x As Double, _ ByVal y As Double _ ) As Boolean
'宣言
Function _isHitTested( _ ByVal x As Double, _ ByVal y As Double _ ) As Boolean
bool _isHitTested( double x, double y )
IScrollableContainerOwner インターフェース IScrollableContainerOwner メンバ