给图片加上水印

给图片加上水印，要用水印组件，主要有两个，aspjpeg和wsImage。这里介绍的是aspjpeg2.0。

安装和使用见：http://www.jb51.net/article/13323.htm

这里介绍一个使用aspjgeg给图片加水印的例子。

<%
Set Jpeg = Server.CreateObject("Persits.Jpeg")
\' Open source image
Jpeg.Open Server.MapPath("images/apple.jpg")

\' Resizing is optional. None in this code sample.

\' Draw text
Jpeg.Canvas.Font.Color = &HFF0000 \' Red
Jpeg.Canvas.Font.Family = "Courier New"
Jpeg.Canvas.Font.Bold = True
Jpeg.Canvas.Font.Quality = 4 \' Antialiased
Jpeg.Canvas.Font.BkMode = "Opaque" \' to make antialiasing work
Jpeg.Canvas.Print 10, 10, "Copyright (c) XYZ, Inc."

\' Draw frame: black, 2-pixel width
Jpeg.Canvas.Pen.Color = &H000000 \' Black
Jpeg.Canvas.Pen.Width = 2
Jpeg.Canvas.Brush.Solid = False \' or a solid bar would be drawn
Jpeg.Canvas.DrawBar 1, 1, Jpeg.Width, Jpeg.Height

Jpeg.Save Server.MapPath("test.jpg")
%>