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标题:求这个验证码的 要怎么验证
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adweset
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求这个验证码的 要怎么验证
<%
Const nMaxSaturation = 100        ' 最大色彩饱和度
Const nBlankNoisyDotOdds = 0.2      ' 空白处噪点率
Const nColorNoisyDotOdds = 0.1      '有色处噪点率
Const nCharCount = 4            ' 产生的字符个数
Const nPixelWidth = 22            ' 单个字符位图的宽度
Const nPixelHeight = 22            ' 单个字符位图的高度
Const nColorHue = -1            ' 显示验证码的色调(-1表示随机色调, -2表示灰度色调)'220
Const nAngleRandom = 10             ' 角度随机量
Const nLengthRandom = 30            ' 长度随机量(百分比)
Const cCharSet = "0123456789"
                                ' 构成验证码的字符集
                                ' 如果扩充了下边的字母矢量库,则可以相应扩充这个字符集

Dim Buf(), DigtalStr
Dim Lines(), LineCount
Dim CursorX, CursorY, DirX, DirY

Randomize
Call CreatValidCode("CheckCode")

Sub CDGen_Reset()
    ' 复位矢量笔和环境变量
    LineCount = 0
    CursorX = 0
    CursorY = 0
    ' 初始的光笔方向是垂直向下
    DirX = 0
    DirY = 1
End Sub

Sub CDGen_Clear()
    ' 清空位图阵列
    Dim i, j
    ReDim Buf(nPixelHeight - 1, nCharCount * nPixelWidth - 1)

    For j = 0 To nPixelHeight - 1
        For i = 0 To nCharCount * nPixelWidth - 1
            Buf(j, i) = 0
        Next
    Next
End Sub

Sub CDGen_PSet(X, Y)
    ' 在位图阵列上画点
    Buf(Y, X) = 1
End Sub

Sub CDGen_Line(X1, Y1, X2, Y2)
    ' 在位图阵列上画线
    Dim DX, DY, DeltaT, i
   
    DX = X2 - X1
    DY = Y2 - Y1
    If Abs(DX) > Abs(DY) Then DeltaT = Abs(DX) Else DeltaT = Abs(DY)
    For i = 0 To DeltaT
        CDGen_PSet X1 + DX * i / DeltaT, Y1 + DY * i / DeltaT
    Next
End Sub

Sub CDGen_FowardDraw(nLength)
    ' 按当前光笔方向绘制指定长度并移动光笔,正数表示从左向右/从上向下绘制,负数表示从右向左/从下向上绘制
    nLength = Sgn(nLength) * Abs(nLength) * (1 - nLengthRandom / 100 + Rnd * nLenghtRandom * 2 / 100)
    ReDim Preserve Lines(3, LineCount)
    Lines(0, LineCount) = CursorX
    Lines(1, LineCount) = CursorY
    CursorX = CursorX + DirX * nLength
    CursorY = CursorY + DirY * nLength
    Lines(2, LineCount) = CursorX
    Lines(3, LineCount) = CursorY
    LineCount = LineCount + 1
End Sub

Sub CDGen_SetDirection(nAngle)
    ' 按指定角度设定画笔方向, 正数表示相对当前方向顺时针改变方向,负数表示相对当前方向逆时针改变方向
    Dim DX, DY
   
    nAngle = Sgn(nAngle) * (Abs(nAngle) - nAngleRandom + Rnd * nAngleRandom * 2) / 180 * 3.1415926
    DX = DirX
    DY = DirY
    DirX = DX * Cos(nAngle) - DY * Sin(nAngle)
    DirY = DX * Sin(nAngle) + DY * Cos(nAngle)
End Sub

Sub CDGen_MoveToMiddle(nActionIndex, nPercent)
    ' 将画笔光标移动到指定动作的中间点上,nPercent为中间位置的百分比
    Dim DeltaX, DeltaY
   
    DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)
    DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)
    CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100
    CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100
End Sub

Sub CDGen_MoveCursor(nActionIndex)
    ' 将画笔光标移动到指定动作的起始点上
    CursorX = Lines(0, nActionIndex)
    CursorY = Lines(1, nActionIndex)
End Sub

Sub CDGen_Close(nActionIndex)
    ' 将当前光笔位置与指定动作的起始点闭合并移动光笔
    ReDim Preserve Lines(3, LineCount)
    Lines(0, LineCount) = CursorX
    Lines(1, LineCount) = CursorY
    CursorX = Lines(0, nActionIndex)
    CursorY = Lines(1, nActionIndex)
    Lines(2, LineCount) = CursorX
    Lines(3, LineCount) = CursorY
    LineCount = LineCount + 1
End Sub

Sub CDGen_CloseToMiddle(nActionIndex, nPercent)
    ' 将当前光笔位置与指定动作的中间点闭合并移动光笔,nPercent为中间位置的百分比
    Dim DeltaX, DeltaY
   
    ReDim Preserve Lines(3, LineCount)
    Lines(0, LineCount) = CursorX
    Lines(1, LineCount) = CursorY
    DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)
    DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)
    CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100
    CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100
    Lines(2, LineCount) = CursorX
    Lines(3, LineCount) = CursorY
    LineCount = LineCount + 1
End Sub

Sub CDGen_Flush(X0, Y0)
    ' 按照当前的画笔动作序列绘制位图点阵
    Dim MaxX, MinX, MaxY, MinY
    Dim DeltaX, DeltaY, StepX, StepY, OffsetX, OffsetY
    Dim i

    MaxX = MinX = MaxY = MinY = 0
    For i = 0 To LineCount - 1
        If MaxX < Lines(0, i) Then MaxX = Lines(0, i)
        If MaxX < Lines(2, i) Then MaxX = Lines(2, i)
        If MinX > Lines(0, i) Then MinX = Lines(0, i)
        If MinX > Lines(2, i) Then MinX = Lines(2, i)
        If MaxY < Lines(1, i) Then MaxY = Lines(1, i)
        If MaxY < Lines(3, i) Then MaxY = Lines(3, i)
        If MinY > Lines(1, i) Then MinY = Lines(1, i)
        If MinY > Lines(3, i) Then MinY = Lines(3, i)
    Next
    DeltaX = MaxX - MinX
    DeltaY = MaxY - MinY
    If DeltaX = 0 Then DeltaX = 1
    If DeltaY = 0 Then DeltaY = 1
    MaxX = MinX
    MaxY = MinY
    If DeltaX > DeltaY Then
        StepX = (nPixelWidth - 2) / DeltaX
        StepY = (nPixelHeight - 2) / DeltaX
        OffsetX = 0
        OffsetY = (DeltaX - DeltaY) / 2
    Else
        StepX = (nPixelWidth - 2) / DeltaY
        StepY = (nPixelHeight - 2) / DeltaY
        OffsetX = (DeltaY - DeltaX) / 2
        OffsetY = 0
    End If
    For i = 0 To LineCount - 1
        Lines(0, i) = Round((Lines(0, i) - MaxX + OffsetX) * StepX, 0)
        If Lines(0, i) < 0 Then Lines(0, i) = 0
        If Lines(0, i) >= nPixelWidth - 2 Then Lines(0, i) = nPixelWidth - 3
        Lines(1, i) = Round((Lines(1, i) - MaxY + OffsetY) * StepY, 0)
        If Lines(1, i) < 0 Then Lines(1, i) = 0
        If Lines(1, i) >= nPixelHeight - 2 Then Lines(1, i) = nPixelHeight - 3
        Lines(2, i) = Round((Lines(2, i) - MinX + OffsetX) * StepX, 0)
        If Lines(2, i) < 0 Then Lines(2, i) = 0
        If Lines(2, i) >= nPixelWidth - 2 Then Lines(2, i) = nPixelWidth - 3
        Lines(3, i) = Round((Lines(3, i) - MinY + OffsetY) * StepY, 0)
        If Lines(3, i) < 0 Then Lines(3, i) = 0
        If Lines(3, i) >= nPixelHeight - 2 Then Lines(3, i) = nPixelHeight - 3
        CDGen_Line Lines(0, i) + X0 + 1, Lines(1, i) + Y0 + 1, Lines(2, i) + X0 + 1, Lines(3, i) + Y0 + 1
    Next
End Sub

Sub CDGen_Char(cChar, X0, Y0)
    ' 在指定坐标处生成指定字符的位图阵列
    CDGen_Reset
    Select Case cChar
    Case "0"
        CDGen_SetDirection -60                            ' 逆时针60度(相对于垂直线)
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 逆时针60度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 1.5                              ' 绘制1.5个单位
        CDGen_SetDirection -60                            ' 逆时针60度
        CDGen_FowardDraw 0.7                              ' 绘制0.7个单位
        CDGen_SetDirection -60                            ' 顺时针120度
        CDGen_FowardDraw 0.7                              ' 绘制0.7个单位
        CDGen_Close 0                                     ' 封闭当前笔与第0笔(0开始)
    Case "1"
        CDGen_SetDirection -90                            ' 逆时针90度(相对于垂直线)
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
        CDGen_MoveToMiddle 0, 50                          ' 移动画笔的位置到第0笔(0开始)的50%处
        CDGen_SetDirection 90                             ' 逆时针90度
        CDGen_FowardDraw -1.4                             ' 反方向绘制1.4个单位
        CDGen_SetDirection 30                             ' 逆时针30度
        CDGen_FowardDraw 0.4                              ' 绘制0.4个单位
    Case "2"
        CDGen_SetDirection 45                             ' 顺时针45度(相对于垂直线)
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -120                           ' 逆时针120度
        CDGen_FowardDraw 0.4                              ' 绘制0.4个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.6                              ' 绘制0.6个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 1.6                              ' 绘制1.6个单位
        CDGen_SetDirection -135                           ' 逆时针135度
        CDGen_FowardDraw 1.0                              ' 绘制1.0个单位
    Case "3"
        CDGen_SetDirection -90                            ' 逆时针90度(相对于垂直线)
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection 135                            ' 顺时针135度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection -120                           ' 逆时针120度
        CDGen_FowardDraw 0.6                              ' 绘制0.6个单位
        CDGen_SetDirection 80                             ' 顺时针80度
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
    Case "4"
        CDGen_SetDirection 20                             ' 顺时针20度(相对于垂直线)
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection -110                           ' 逆时针110度
        CDGen_FowardDraw 1.2                              ' 绘制1.2个单位
        CDGen_MoveToMiddle 1, 60                          ' 移动画笔的位置到第1笔(0开始)的60%处
        CDGen_SetDirection 90                             ' 顺时针90度
        CDGen_FowardDraw 0.7                              ' 绘制0.7个单位
        CDGen_MoveCursor 2                                ' 移动画笔到第2笔(0开始)的开始处
        CDGen_FowardDraw -1.5                             ' 反方向绘制1.5个单位
    Case "5"
        CDGen_SetDirection 90                             ' 顺时针90度(相对于垂直线)
        CDGen_FowardDraw 1.0                              ' 绘制1.0个单位
        CDGen_SetDirection -90                            ' 逆时针90度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection -90                            ' 逆时针90度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection 30                             ' 顺时针30度
        CDGen_FowardDraw 0.4                              ' 绘制0.4个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.4                              ' 绘制0.4个单位
        CDGen_SetDirection 30                             ' 顺时针30度
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
    Case "6"
        CDGen_SetDirection -60                            ' 逆时针60度(相对于垂直线)
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 逆时针60度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 1.5                              ' 绘制1.5个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 0.7                              ' 绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
        CDGen_CloseToMiddle 2, 50                         ' 将当前画笔位置与第2笔(0开始)的50%处封闭
    Case "7"
        CDGen_SetDirection 180                            ' 顺时针180度(相对于垂直线)
        CDGen_FowardDraw 0.3                              ' 绘制0.3个单位
        CDGen_SetDirection 90                             ' 顺时针90度
        CDGen_FowardDraw 0.9                              ' 绘制0.9个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 1.3                              ' 绘制1.3个单位
    Case "8"
        CDGen_SetDirection -60                            ' 逆时针60度(相对于垂直线)
        CDGen_FowardDraw -0.8                             ' 反方向绘制0.8个单位
        CDGen_SetDirection -60                            ' 逆时针60度
        CDGen_FowardDraw -0.8                             ' 反方向绘制0.8个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection 110                            ' 顺时针110度
        CDGen_FowardDraw -1.5                             ' 反方向绘制1.5个单位
        CDGen_SetDirection -110                           ' 逆时针110度
        CDGen_FowardDraw 0.9                              ' 绘制0.9个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.8                              ' 绘制0.8个单位
        CDGen_SetDirection 60                             ' 顺时针60度
        CDGen_FowardDraw 0.9                              ' 绘制0.9个单位
        CDGen_SetDirection 70                             ' 顺时针70度
        CDGen_FowardDraw 1.5                                ' 绘制1.5个单位
        CDGen_Close 0                                     ' 封闭当前笔与第0笔(0开始)
    Case "9"
        CDGen_SetDirection 120                            ' 逆时针60度(相对于垂直线)
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 逆时针60度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 顺时针120度
        CDGen_FowardDraw -1.5                              ' 绘制1.5个单位
        CDGen_SetDirection -60                            ' 顺时针120度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 顺时针120度
        CDGen_FowardDraw -0.7                              ' 绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 顺时针120度
        CDGen_FowardDraw 0.5                              ' 绘制0.5个单位
        CDGen_CloseToMiddle 2, 50                         ' 将当前画笔位置与第2笔(0开始)的50%处封闭
    ' 以下为字母的矢量动作,有兴趣的可以继续
    Case "A"
        CDGen_SetDirection -(Rnd * 20 + 150)              ' 逆时针150-170度(相对于垂直线)
        CDGen_FowardDraw Rnd * 0.2 + 1.1                  ' 绘制1.1-1.3个单位
        CDGen_SetDirection Rnd * 20 + 140                 ' 顺时针140-160度
        CDGen_FowardDraw Rnd * 0.2 + 1.1                  ' 绘制1.1-1.3个单位
        CDGen_MoveToMiddle 0, 30                          ' 移动画笔的位置到第1笔(0开始)的30%处
        CDGen_CloseToMiddle 1, 70                         ' 将当前画笔位置与第1笔(0开始)的70%处封闭
    Case "B"
        CDGen_SetDirection -(Rnd * 20 + 50)               ' 逆时针50-70度(相对于垂直线)
        CDGen_FowardDraw Rnd * 0.4 + 0.8                  ' 绘制0.8-1.2个单位
        CDGen_SetDirection Rnd * 20 + 110                 ' 顺时针110-130度
        CDGen_FowardDraw Rnd * 0.2 + 0.6                  ' 绘制0.6-0.8个单位
        CDGen_SetDirection -(Rnd * 20 + 110)              ' 逆时针110-130度
        CDGen_FowardDraw Rnd * 0.2 + 0.6                  ' 绘制0.6-0.8个单位
        CDGen_SetDirection Rnd * 20 + 110                 ' 顺时针110-130度
        CDGen_FowardDraw Rnd * 0.4 + 0.8                  ' 绘制0.8-1.2个单位
        CDGen_Close 0                                     ' 封闭当前笔与第1笔(0开始)
    Case "C"
        CDGen_SetDirection -60                            ' 逆时针60度(相对于垂直线)
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection -60                            ' 逆时针60度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 1.5                              ' 绘制1.5个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw -0.7                             ' 反方向绘制0.7个单位
        CDGen_SetDirection 120                            ' 顺时针120度
        CDGen_FowardDraw 0.7                              ' 绘制0.7个单位
    End Select
    CDGen_Flush X0, Y0
End Sub

Sub CDGen_Blur()
    ' 对产生的位图进行柔化处理
    Dim i, j
   
    For j = 1 To nPixelHeight - 2
        For i = 1 To nCharCount * nPixelWidth - 2
            If Buf(j, i) = 0 Then
                If ((Buf(j, i - 1) Or Buf(j + 1, i)) And 1) <> 0 Then
                    ' 如果当前点是空白点,且上下左右四个点中有一个点是有色点,则该点做柔化处理
                    Buf(j, i) = 2
                End If
            End If
        Next
    Next
End Sub

Sub CDGen_NoisyDot()
    ' 对产生的位图进行噪点处理
    Dim i, j, NoisyDot, CurDot
   
    For j = 0 To nPixelHeight - 1
        For i = 0 To nCharCount * nPixelWidth - 1
            If Buf(j, i) <> 0 Then
                NoisyDot = Int(Rnd * Rnd * nMaxSaturation)
                Select Case nColorNoisyDotOdds
                Case 0
                    CurDot = nMaxSaturation
                Case 1
                    CurDot = 0
                Case Else
                    CurDot = NoisyDot
                End Select
                If Rnd < nColorNoisyDotOdds Then Buf(j, i) = CurDot Else Buf(j, i) = nMaxSaturation
            Else
                NoisyDot = Int(Rnd * nMaxSaturation)
                Select Case nBlankNoisyDotOdds
                Case 0
                    CurDot = 0
                Case 1
                    CurDot = nMaxSaturation
                Case Else
                    CurDot = NoisyDot
                End Select
                If Rnd < nBlankNoisyDotOdds Then Buf(j, i) = CurDot Else Buf(j, i) = 0
            End If
        Next
    Next
End Sub

Sub CDGen()
    ' 生成位图阵列
    Dim i, Ch
   
    DigtalStr = ""
    CDGen_Clear
    For i = 0 To nCharCount - 1
        Ch = Mid(cCharSet, Int(Rnd * Len(cCharSet)) + 1, 1)
        DigtalStr = DigtalStr + Ch
        CDGen_Char Ch, i * nPixelWidth, 0
    Next
    CDGen_Blur
    CDGen_NoisyDot
End Sub

Function HSBToRGB(vH, vS, vB)
    ' 将颜色值由HSB转换为RGB
    Dim aRGB(3), RGB1st, RGB2nd, RGB3rd
    Dim nH, nS, nB
    Dim lH, nF, nP, nQ, nT

    vH = (vH Mod 360)
    If vS > 100 Then
        vS = 100
    ElseIf vS < 0 Then
        vS = 0
    End If
    If vB > 100 Then
        vB = 100
    ElseIf vB < 0 Then
        vB = 0
    End If
    If vS > 0 Then
        nH = vH / 60
        nS = vS / 100
        nB = vB / 100
        lH = Int(nH)
        nF = nH - lH
        nP = nB * (1 - nS)
        nQ = nB * (1 - nS * nF)
        nT = nB * (1 - nS * (1 - nF))
        Select Case lH
        Case 0
            aRGB(0) = nB * 255
            aRGB(1) = nT * 255
            aRGB(2) = nP * 255
        Case 1
            aRGB(0) = nQ * 255
            aRGB(1) = nB * 255
            aRGB(2) = nP * 255
        Case 2
            aRGB(0) = nP * 255
            aRGB(1) = nB * 255        
            aRGB(2) = nT * 255
        Case 3
            aRGB(0) = nP * 255
            aRGB(1) = nQ * 255
            aRGB(2) = nB * 255
        Case 4
            aRGB(0) = nT * 255
            aRGB(1) = nP * 255
            aRGB(2) = nB * 255
        Case 5
            aRGB(0) = nB * 255
            aRGB(1) = nP * 255
            aRGB(2) = nQ * 255
        End Select            
    Else
        aRGB(0) = (vB * 255) / 100
        aRGB(1) = aRGB(0)
        aRGB(2) = aRGB(0)
    End If
    HSBToRGB = ChrB(Round(aRGB(2), 0)) & ChrB(Round(aRGB(1), 0)) & ChrB(Round(aRGB(0), 0))
End Function

Sub CreatValidCode(pSN)
    Dim i, j, CurColorHue
   
    ' 禁止缓存
    Response.Expires = -9999
    Response.AddHeader "pragma", "no-cache"
    Response.AddHeader "cache-ctrol", "no-cache"
    Response.ContentType = "image/bmp"
   
    Call CDGen
    Session(pSN) = DigtalStr    '记录入Session

    Dim PicWidth, PicHeight, FileSize, PicDataSize
    PicWidth = nCharCount * nPixelWidth
    PicHeight = nPixelHeight
    PicDataSize = PicWidth * PicHeight * 3
    FileSize = PicDataSize + 54

    ' 输出BMP文件信息头
    Response.BinaryWrite ChrB(66) & ChrB(77) & _
        ChrB(FileSize Mod 256) & ChrB((FileSize \ 256) Mod 256) & ChrB((FileSize \ 256 \ 256) Mod 256) & ChrB(FileSize \ 256 \ 256 \ 256) & _
        ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _
        ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0)

    ' 输出BMP位图信息头
    Response.BinaryWrite ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & _
        ChrB(PicWidth Mod 256) & ChrB((PicWidth \ 256) Mod 256) & ChrB((PicWidth \ 256 \ 256) Mod 256) & ChrB(PicWidth \ 256 \ 256 \ 256) & _
        ChrB(PicHeight Mod 256) & ChrB((PicHeight \ 256) Mod 256) & ChrB((PicHeight \ 256 \ 256) Mod 256) & ChrB(PicHeight \ 256 \ 256 \ 256) & _
        ChrB(1) & ChrB(0) & _
        ChrB(24) & ChrB(0) & _
        ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _
        ChrB(PicDataSize Mod 256) & ChrB((PicDataSize \ 256) Mod 256) & ChrB((PicDataSize \ 256 \ 256) Mod 256) & ChrB(PicDataSize \ 256 \ 256 \ 256) & _
        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)

    ' 逐点输出位图阵列
    If nColorHue = -1 Then
        CurColorHue = Int(Rnd * 360)
    ElseIf nColorHue = -2 Then
        CurColorHue = 0
    Else
        CurColorHue = nColorHue
    End If
    For j = 0 To nPixelHeight - 1
        For i = 0 To Len(DigtalStr) * nPixelWidth - 1
            If nColorHue = -2 Then
                Response.BinaryWrite HSBToRGB(CurColorHue, 0, 100 - Buf(nPixelHeight - 1 - j, i))
            Else
                Response.BinaryWrite HSBToRGB(CurColorHue, Buf(nPixelHeight - 1 - j, i), 100)
            End If
        Next
    Next
End Sub
%>
搜索更多相关主题的帖子: 验证 
2009-09-30 19:24
adweset
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请写详细的代码

asp  js    两种验证方式最好都写上
2009-09-30 19:26
aspic
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取表单输入数据与Session(("CheckCode")对比
2009-10-12 09:54
谁与争疯
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你就发验证部份的程序嘛,验证码生成图片的部份程序就不用发出来了,简便一点。

论坛是我家灌水靠大家
2009-11-17 14:11
快速回复:求这个验证码的 要怎么验证
数据加载中...
 
   



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