public delegate void DrawImagesToPDFCallback(
	int pageIndex,
	out Image[] images,
	out Point[] points,
	out string documentLayerName
)

Public Delegate Sub DrawImagesToPDFCallback ( 
	pageIndex As Integer,
	<OutAttribute> ByRef images As Image(),
	<OutAttribute> ByRef points As Point(),
	<OutAttribute> ByRef documentLayerName As String
)

public delegate void DrawImagesToPDFCallback(
	int pageIndex, 
	[OutAttribute] array<Image^>^% images, 
	[OutAttribute] array<Point>^% points, 
	[OutAttribute] String^% documentLayerName
)

type DrawImagesToPDFCallback = 
    delegate of 
        pageIndex : int * 
        images : Image[] byref * 
        points : Point[] byref * 
        documentLayerName : string byref -> unit