'宣言 Public Function DrawScrollTrack( _ ByVal orientation As Orientation, _ ByVal topLeft As Boolean, _ ByRef drawParams As UIElementDrawParams, _ ByVal rect As Rectangle, _ ByVal clipRect As Rectangle, _ ByVal buttonState As UIElementButtonState _ ) As Boolean
public bool DrawScrollTrack( Orientation orientation, bool topLeft, ref UIElementDrawParams drawParams, Rectangle rect, Rectangle clipRect, UIElementButtonState buttonState )