主要用一个函数就可以解决了，如下：
'----------------------------------
'创建预览图片及打水印:call CreateView(文件的路径,要添加的水印图片文件)
'Design by Seven (See7di@Gmail.com)
Function CreateView(imagename,img,inttype)
Dim Object,objFont,Obj,LogoPath,sWidth,sHeight
sWidth = LogoPicWid'//LOGO的宽
sHeight = LogoPicHig'//LOGO的高
LogoPath = Server.MapPath(img)'//LOGO路径
Set Obj = Server.CreateObject("Persits.Jpeg")'//建立LOGO对象
Set Object = Server.CreateObject("Persits.Jpeg")'//建立原图对象
On Error resume Next
Obj.Open LogoPath'//读取LOGO
If err>0 Then
Response.Write ("对不起,获取LOGO图片文件失败!")
EXIT Function
End if
Object.Open Trim(Server.MapPath(imagename))'//读取原图
If err>0 Then
Response.Write ("对不起,获取需要处理的图片文件失败!")
EXIT Function
End if
Obj.Width = sWidth'//加入图片的原宽度
Obj.Height = sHeight'//加入图片的原高度
'\\如果原图比LOGO大
If Object.width>(Cint(Obj.Width)*2) and Object.Height>(Cint(Obj.Height)*2) Then
strDo="yes"
End if
If inttype=1 Then
Object.Canvas.Font.Color = FontColor'//文字的颜色
Object.Canvas.Font.Family = "Verdana"'//文字的字体
Object.Canvas.Font.Bold = FontBold'//是否加粗
Object.Canvas.Font.Size = FontSize'//字体大小
Object.Canvas.Print ""&Draw_X&"", ""&Draw_Y&"", ""&Draw_Info&""'//打印坐标x 打印坐标y 需要打印的字符
Object.Canvas.Pen.Color = &H333333'//背景颜色
Object.Canvas.Pen.Width = 1'//画笔宽度
Object.Canvas.Brush.Solid = FontSolid'//是否加粗处理
Object.Canvas.Bar 0, 0, Object.Width, Object.Height'//起始X坐标 起始Y坐标 输入长度 输入高度
Else
If strDo="yes" Then
Object.Canvas.Pen.Color = OutSideColor'// 边框的颜色
Object.Canvas.Pen.Width = OutSideWidth'// 边框的粗细
Object.Canvas.Brush.Solid = false'// 图片边框内是否填充颜色
Object.DrawImage ""&Draw_X&"", ""&Draw_Y&"", Obj, ""&Clarity&"", &HFFFFFF,90'// 加入图片的位置以及坐标，透明度（添加水印图片）
Object.Canvas.Bar 0, 0, Object.Width, Object.Height'// 图片边框线的位置坐标
Object.Width = Object.Width
Object.height = Object.height
Object.Sharpen 1, 120
End if
End If
Object.Save Server.MapPath(imagename)'// 生成文件
Set Obj=Nothing
Set Object=Nothing
End Function
引用：
eWebEditor 2.8水印功能实现思路http://www.yongfa365.com/item/e9dbc28e51a680f6.html
