'宣言
Public Overloads Function OnMouseDown( _
ByVal As Infragistics.Shared.ISelectableItem, _
ByRef As Infragistics.Win.MouseMessageInfo, _
ByVal As Boolean _
) As Boolean
public bool OnMouseDown(
Infragistics.Shared.ISelectableItem ,
ref Infragistics.Win.MouseMessageInfo ,
bool
)