Com_CreatValidCode("ValidCode")
サブ Com_CreatValidCode(pSN)
を呼び出します。
'キャッシュを無効にする
応答の有効期限 = -9999
Response.AddHeader "プラグマ"、"キャッシュなし"
Response.AddHeader "キャッシュ制御"、"キャッシュなし"
Response.ContentType = "Image/BMP"
Randomize
Dim i, ii, iii
Const cOdds = 8 ' ノイズが出現する確率
Const cAmount = 36 'テキストの量
Const cCode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
'カラーデータ(文字、背景)
ディム vColorData(1)
vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0) ' 青 0、緑 0、赤 0 (黒)
vColorData(1) = ChrB(250) & ChrB(236) & ChrB(211) ' 青250、緑236、赤211(水色)
' ランダムに文字を生成
Dim vCode(4)、vCode
i = 0 ～ 3 の場合
vCode(i) = Int(Rnd * cAmount)
vCodes = vCodes & Mid(cCode, vCode(i) + 1, 1)
Next
Session(pSN) = vCodes '
データをセッションに記録する ' 文字
ディム vNumberData(35)
vNumberData(0) = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111"
vNumberData(1) = "11110111111100011111111011111111101111111110111111111011111111101111111110111111110111111100000111"
vNumberData(2) = "1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011"
vNumberData(3) = "111000011111011110111101111011111111011111110011111111110111111111011110111101111011110111110000111"
vNumberData(4) = "1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011"
vNumberData(5) = "110000001111011111111101111111110100011111001110111111111011111111011110111101111011110111110000111"
vNumberData(6) = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111"
vNumberData(7) = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111"
vNumberData(8) = "111000011111011110111101111011110111101111100001111101101111101111011110111101111011110111110000111"
vNumberData(9) = "111000111111011101111101111011110111101111011100111110001011111111011111111101111011101111110001111"
vNumberData(10) = "1111011111111101111111101011111110101111111010111111101011111100000111110111011111011101111000100011"
vNumberData(11) = "100000011111011110111101111011110111011111000011111011101111101111011110111101111011110111000000111"
vNumberData(12) = "111000001111011110111011111011101111111110111111110111111111011111111101111101111011101111110001111"
vNumberData(13) = "1000001111110111011111011110111101111011110111101111011110111101111011110111101111011101111000001111"
vNumberData(14) = "100000011111011110111101101111110110111111000011111011011111101101111110111111111011110111000000111"
vNumberData(15) = "1000000111110111101111011011111101101111110000111111011011111101101111110111111111011111111000111111"
vNumberData(16) = "1110000111110111011110111101111011111111101111111110111111111011100011101111011111011101111110001111"
vNumberData(17) = "100010001111011101111101110111110111011111000001111011101111101110111110111011111011101111000100011"
vNumberData(18) = "1100000111111101111111110111111111011111111101111111110111111111011111111101111111110111111100000111"
vNumberData(19) = "111000001111111011111111101111111110111111111011111111101111111101111111110111110111011111000011111"
vNumberData(20) = "1000100011110111011111011011111101011111110001111111010111111101101111110110111111011101111000100011"
vNumberData(21) = "100011111111011111111011111111101111111110111111111011111111101111111110111111111011110111000000011"
vNumberData(22) = "1000100011110010011111001001111100100111110101011111010101111101010111110101011111010101111001010011"
vNumberData(23) = "1000100011110011011111001101111101010111110101011111010101111101100111110110011111011001111000110111"
vNumberData(24) = "1110001111110111011110111110111011111011101111101110111110111011111011101111101111011101111110001111"
vNumberData(25) = "100000011111011110111101111011110111101111000001111011111111101111111110111111111011111111000111111"
vNumberData(26) = "1110001111110111011110111110111011111011101111101110111110111011111011101001101111011001111110001011"
vNumberData(27) = "1000001111110111011111011101111101110111110000111111010111111101101111110110111111011101111000110011"
vNumberData(28) = "111000001111011110111101111011110111111111100111111111100111111111011110111101111011110111100000111"
vNumberData(29) = "1000000011101101101111110111111111011111111101111111110111111111011111111101111111110111111110001111"
vNumberData(30) = "1000100011110111011111011101111101110111110111011111011101111101110111110111011111011101111110001111"
vNumberData(31) = "1000100011110111011111011101111101110111111010111111101011111110101111111010111111110111111111011111"
vNumberData(32) = "1001010011110101011111010101111101010111110101011111001001111110101111111010111111101011111110101111"
vNumberData(33) = "100010001111011101111101011111110101111111101111111110111111110101111111010111111011101111000100011"
vNumberData(34) = "100010001111011101111101110111111010111111101011111110111111111011111111101111111110111111110001111"
vNumberData(35) = "1100000011110111011111111101111111101111111110111111110111111111011111111011111111101110111100000011"
' 出力画像ファイルヘッダ
Response.BinaryWrite ChrB(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)
' 出力画像情報ヘッダー
Response.BinaryWrite ChrB(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)
For i = 9 To 0 Step -1 ' すべての行を通過します
For ii = 0 To 3 ' すべての単語を確認します
For iii = 1 To 10 ' すべてのピクセルを通過します
' 画像データを行ごと、ワードごと、ピクセルごとに出力します
If Rnd * 99 + 1 < cOdds then ' ランダムにノイズを生成します
Response.BinaryWrite vColorData(0)
それ以外
Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1))
終了の場合
次
次
次
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