<%
'=============================================================================
'动网论坛加法验证码（ASPJpeg版）
'作者：cuixiping
'博客(CSDN)：http://blog.csdn.net/cuixiping/
'博客(博客园)：http://www.cnblogs.com/cuixiping/
'日期：2008年11月
'生成100x20的jpeg图片验证码，内容类似“25+64等于？”
'/upload/tech/20091012/20091012012648_4e4b5fbbbb602b6d35bea8460aa8f8e5.jpeg)。
'如果服务器没有“楷体_GB2312”字体，请修改为其他字体并调整字符位置。
'使用方法：将该代码替换动网论坛的Dv_GetCode.asp文件中的内容，文件首尾不要留空行。
'=============================================================================
Const FontColor = &H000000 ' 字体颜色
Const BgColor = &HFFCCFF ' 背景颜色
Call CreatValidCode("GetCode")
Sub CreatValidCode(pSN)
Dim x, Jpeg
Randomize
x = Array(1+Int(Rnd()*9), Int(Rnd()*10), 1+Int(Rnd()*9), Int(Rnd()*10), 0, 0, "+")
x(4) = x(0)*10 + x(1)
x(5) = x(2)*10 + x(3)
'Session(pSN) = CStr(Eval(x(4) & x(6) & x(5)))
Session(pSN) = CStr(x(4) + x(5))
Set Jpeg = Server.CreateObject("/upload/tech/20091012/20091012012649_07a96b1f61097ccb54be14d6a47439b0.jpeg")
Jpeg.New 100,20,BgColor
Jpeg.Quality=100
With Jpeg.Canvas
.Font.Bold = True
.Font.Size = 16
.Font.Rotation = 0
.Font.Family = "楷体_GB2312"
.Font.Color = FontColor
.PrintText 4, 3, CStr(x(0))
.PrintText 14, 3, CStr(x(1))
.PrintText 26, 3, x(6)
.PrintText 38, 3, CStr(x(2))
.PrintText 48, 3, CStr(x(3))
.Font.Rotation = 15
.PrintText 55, 3, "等"
.PrintText 70, 3, "于"
.PrintText 85, 3, "？"
End With
'禁止缓存
Response.ContentType = "image/jpeg"
Response.Expires = -9999
Response.AddHeader "pragma", "no-cache"
Response.AddHeader "cache-ctrol", "no-cache"
Response.AddHeader "Content-Disposition","inline; filename=vcode.jpg"
Jpeg.SendBinary
Jpeg.Close
Set Jpeg = Nothing
End Sub
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