SelectionSlider 构造函数

 CONSTRUCTOR(
	oOwner,
	xID,
	oPoint,
	oDimension
) CLIPPER

[ClipperCallingConventionAttribute(new string[] { ... })]
public SelectionSlider(
	__Usual oOwner = default,
	__Usual xID = default,
	__Usual oPoint = default,
	__Usual oDimension = default
)