asp输出bmp
[2005-03-0612:04:25|作者:flashsoft]
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<%
CallCom_CreatValidCode("ValidCode")

SubCom_CreatValidCode(pSN)

'Author:Layen
'QQ:84815733
'E-mail:support@ssaw.net

'禁止缓存
Response.Expires=-9999
Response.AddHeader"Pragma","no-cache"
Response.AddHeader"cache-ctrol","no-cache"
Response.ContentType="Image/BMP"

Randomize

Dimi,ii,iii

ConstcOdds=8'杂点出现的机率
ConstcAmount=36'文字数量
ConstcCode="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"

'颜色的数据(字符，背景)
DimvColorData(1)
vColorData(0)=ChrB(0)&ChrB(0)&ChrB(0)'蓝0，绿0，红0（黑色）
vColorData(1)=ChrB(250)&ChrB(236)&ChrB(211)'蓝250，绿236，红211（浅蓝色）

'随机产生字符
DimvCode(4),vCodes
Fori=0To3
vCode(i)=Int(Rnd*cAmount)
vCodes=vCodes&Mid(cCode,vCode(i)+1,1)
Next

Session(pSN)=vCodes'记录入Session

'字符的数据
DimvNumberData(35)
vNumberData(0)="1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111"
vNumberData(1)="1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111"
vNumberData(2)="1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011"
vNumberData(3)="1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111"
vNumberData(4)="1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011"
vNumberData(5)="1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111"
vNumberData(6)="1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111"
vNumberData(7)="1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111"
vNumberData(8)="1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111"
vNumberData(9)="1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111"
vNumberData(10)="1111011111111101111111101011111110101111111010111111101011111100000111110111011111011101111000100011"
vNumberData(11)="1000000111110111101111011110111101110111110000111111011101111101111011110111101111011110111000000111"
vNumberData(12)="1110000011110111101110111110111011111111101111111110111111111011111111101111101111011101111110001111"
vNumberData(13)="1000001111110111011111011110111101111011110111101111011110111101111011110111101111011101111000001111"
vNumberData(14)="1000000111110111101111011011111101101111110000111111011011111101101111110111111111011110111000000111"
vNumberData(15)="1000000111110111101111011011111101101111110000111111011011111101101111110111111111011111111000111111"
vNumberData(16)="1110000111110111011110111101111011111111101111111110111111111011100011101111011111011101111110001111"
vNumberData(17)="1000100011110111011111011101111101110111110000011111011101111101110111110111011111011101111000100011"
vNumberData(18)="1100000111111101111111110111111111011111111101111111110111111111011111111101111111110111111100000111"
vNumberData(19)="1110000011111110111111111011111111101111111110111111111011111111101111111110111110111011111000011111"
vNumberData(20)="1000100011110111011111011011111101011111110001111111010111111101101111110110111111011101111000100011"
vNumberData(21)="1000111111110111111111011111111101111111110111111111011111111101111111110111111111011110111000000011"
vNumberData(22)="1000100011110010011111001001111100100111110101011111010101111101010111110101011111010101111001010011"
vNumberData(23)="1000100011110011011111001101111101010111110101011111010101111101100111110110011111011001111000110111"
vNumberData(24)="1110001111110111011110111110111011111011101111101110111110111011111011101111101111011101111110001111"
vNumberData(25)="1000000111110111101111011110111101111011110000011111011111111101111111110111111111011111111000111111"
vNumberData(26)="1110001111110111011110111110111011111011101111101110111110111011111011101001101111011001111110001011"
vNumberData(27)="1000001111110111011111011101111101110111110000111111010111111101101111110110111111011101111000110011"
vNumberData(28)="1110000011110111101111011110111101111111111001111111111001111111111011110111101111011110111100000111"
vNumberData(29)="1000000011101101101111110111111111011111111101111111110111111111011111111101111111110111111110001111"
vNumberData(30)="1000100011110111011111011101111101110111110111011111011101111101110111110111011111011101111110001111"
vNumberData(31)="1000100011110111011111011101111101110111111010111111101011111110101111111010111111110111111111011111"
vNumberData(32)="1001010011110101011111010101111101010111110101011111001001111110101111111010111111101011111110101111"
vNumberData(33)="1000100011110111011111101011111110101111111101111111110111111110101111111010111111011101111000100011"
vNumberData(34)="1000100011110111011111011101111110101111111010111111110111111111011111111101111111110111111110001111"
vNumberData(35)="1100000011110111011111111101111111101111111110111111110111111111011111111011111111101110111100000011"

'输出图像文件头
Response.BinaryWriteChrB(66)&ChrB(77)&ChrB(230)&ChrB(4)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&_
ChrB(0)&ChrB(0)&ChrB(54)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(40)&ChrB(0)&_
ChrB(0)&ChrB(0)&ChrB(40)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(10)&ChrB(0)&_
ChrB(0)&ChrB(0)&ChrB(1)&ChrB(0)

'输出图像信息头
Response.BinaryWriteChrB(24)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(176)&ChrB(4)&_
ChrB(0)&ChrB(0)&ChrB(18)&ChrB(11)&ChrB(0)&ChrB(0)&ChrB(18)&ChrB(11)&_
ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&_
ChrB(0)&ChrB(0)

Fori=9To0Step-1'历经所有行
Forii=0To3'历经所有字
Foriii=1To10'历经所有像素
'逐行、逐字、逐像素地输出图像数据
IfRnd*99+1<cOddsThen'随机生成杂点
Response.BinaryWritevColorData(0)
Else
Response.BinaryWritevColorData(Mid(vNumberData(vCode(ii)),i*10+iii,1))
EndIf
Next
Next
Next

EndSub
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