'宣言 Public Overrides Sub RenderAlternateView( _ ByVal viewportRect As Rect, _ ByVal windowRect As Rect, _ ByVal surface As RenderSurface, _ ByVal viewIdentifier As String, _ ByVal effectiveScalingRatio As Double _ )
public override void RenderAlternateView( Rect viewportRect, Rect windowRect, RenderSurface surface, string viewIdentifier, double effectiveScalingRatio )