pdf417国家标准，清晰版本。 pdf417国家标准，清晰版本。

支持datamatrix,qrcode,pdf417三种主流二维码的DLL库,来自国外网站,含有一个DEMO及源码,有三种编码的ASPX示例,有开发文档.

今天在搜索资料时，找到PDF417标准，PDF417是一种国际通用的二维码，相对于QRCode，PDF417在美国比较流行，希望这个资料对需要的朋友有帮助。

Private Declare Sub SetColorDepth Lib "MakePDF417.dll" (ByRef nDepth As Integer) Private Declare Sub GetColorDepth Lib "MakePDF417.dll" () Private Declare Sub MixText Lib "MakePDF417.dll" (ByVal szSrcBmpFileName As String, ByVal szDstBmpFileName As String, ByVal szText As String, ByVal lFontSize As Integer, ByVal lTxtHeight As Integer, ByVal lHmargin As Integer, ByVal lVmargin As Integer, ByVal lTxtCntOneLine As Integer) Private Declare Sub Make Lib "MakePDF417.dll" (ByRef ucData As Byte, ByVal nLen As Integer, ByVal szFileName As String, ByVal nClumn As Integer, ByVal nErr As Integer, ByVal nHLRatio As Integer, ByVal nHeight As Integer) Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click Dim a() As Byte a = System.Text.UnicodeEncoding.Unicode.GetBytes(StrConv(TextBox1.Text, VbStrConv.None)) Make(a(2), UBound(a) - LBound(a) + 1, "tmp.bmp", CInt(TextBox2.Text), CInt(TextBox3.Text), CInt(TextBox4.Text), CInt(TextBox6.Text)) SetColorDepth(CInt(TextBox5.Text)) GetColorDepth() Dim tmp, tmp2 As Bitmap tmp = Image.FromFile(Application.StartupPath & "\tmp.bmp") tmp2 = New Bitmap(tmp) tmp.Dispose() PictureBox1.Image = tmp2 End Sub

pdf417条码规范和码字表，有兴趣了解pdf417条码解码的必备参考

里面包含QRcode，PDF417国家标准以及Datamatrix的ISO标准(英文版)。