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1、首先你需要编译好的 zint 条码库。什么，你没有？那没关系，请参看：在 win32 下编译 zint 条码库。
2、启动 VISUAL STUDIO，新建一 “Windows Forms Application”，将 zint.dll、zlib1.dll 和 libpng15.dll 添加到项目中，属性窗口中设置“Copy to Output Directory”为”Copy always”。
3、打开“Form1.cs”代码文件，声明 zint：
/// <summary>
/// 条形码编码类型。
/// </summary>
public enum Symbology
{
BARCODE_CODE11 = 1,
BARCODE_C25MATRIX = 2,
BARCODE_C25INTER = 3,
BARCODE_C25IATA = 4,
BARCODE_C25LOGIC = 6,
BARCODE_C25IND = 7,
BARCODE_CODE39 = 8,
BARCODE_EXCODE39 = 9,
BARCODE_EANX = 13,
BARCODE_EAN128 = 16,
BARCODE_CODABAR = 18,
BARCODE_CODE128 = 20,
BARCODE_DPLEIT = 21,
BARCODE_DPIDENT = 22,
BARCODE_CODE16K = 23,
BARCODE_CODE49 = 24,
BARCODE_CODE93 = 25,
BARCODE_FLAT = 28,
BARCODE_RSS14 = 29,
BARCODE_RSS_LTD = 30,
BARCODE_RSS_EXP = 31,
BARCODE_TELEPEN = 32,
BARCODE_UPCA = 34,
BARCODE_UPCE = 37,
BARCODE_POSTNET = 40,
BARCODE_MSI_PLESSEY = 47,
BARCODE_FIM = 49,
BARCODE_LOGMARS = 50,
BARCODE_PHARMA = 51,
BARCODE_PZN = 52,
BARCODE_PHARMA_TWO = 53,
BARCODE_PDF417 = 55,
BARCODE_PDF417TRUNC = 56,
BARCODE_MAXICODE = 57,
BARCODE_QRCODE = 58,
BARCODE_CODE128B = 60,
BARCODE_AUSPOST = 63,
BARCODE_AUSREPLY = 66,
BARCODE_AUSROUTE = 67,
BARCODE_AUSREDIRECT = 68,
BARCODE_ISBNX = 69,
BARCODE_RM4SCC = 70,
BARCODE_DATAMATRIX = 71,
BARCODE_EAN14 = 72,
BARCODE_CODABLOCKF = 74,
BARCODE_NVE18 = 75,
BARCODE_JAPANPOST = 76,
BARCODE_KOREAPOST = 77,
BARCODE_RSS14STACK = 79,
BARCODE_RSS14STACK_OMNI = 80,
BARCODE_RSS_EXPSTACK = 81,
BARCODE_PLANET = 82,
BARCODE_MICROPDF417 = 84,
BARCODE_ONECODE = 85,
BARCODE_PLESSEY = 86,
BARCODE_TELEPEN_NUM = 87,
BARCODE_ITF14 = 89,
BARCODE_KIX = 90,
BARCODE_AZTEC = 92,
BARCODE_DAFT = 93,
BARCODE_MICROQR = 97,
BARCODE_HIBC_128 = 98,
BARCODE_HIBC_39 = 99,
BARCODE_HIBC_DM = 102,
BARCODE_HIBC_QR = 104,
BARCODE_HIBC_PDF = 106,
BARCODE_HIBC_MICPDF = 108,
BARCODE_HIBC_BLOCKF = 110,
BARCODE_HIBC_AZTEC = 112,
BARCODE_AZRUNE = 128,
BARCODE_CODE32 = 129,
BARCODE_EANX_CC = 130,
BARCODE_EAN128_CC = 131,
BARCODE_RSS14_CC = 132,
BARCODE_RSS_LTD_CC = 133,
BARCODE_RSS_EXP_CC = 134,
BARCODE_UPCA_CC = 135,
BARCODE_UPCE_CC = 136,
BARCODE_RSS14STACK_CC = 137,
BARCODE_RSS14_OMNI_CC = 138,
BARCODE_RSS_EXPSTACK_CC = 139,
BARCODE_CHANNEL = 140,
BARCODE_CODEONE = 141,
BARCODE_GRIDMATRIX = 142
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct ZintSymbolStruct
{
public Symbology symbology;
public int height;
public int whitespace_width;
public int border_width;
public int output_options;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)]
public string fgcolour;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)]
public string bgcolour;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
public string outfile;
public float scale;
public int option_1;
public int option_2;
public int option_3;
public int show_hrt;
public int input_mode;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
public string text;
public int rows;
public int width;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
public string primary;
[MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.U1, SizeConst = 25454)]
public byte[] encoded_data;
[MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.I4, SizeConst = 178)]
public int[] row_height;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 100)]
public string errtxt;
public IntPtr bitmap;
public int bitmap_width;
public int bitmap_height;
public IntPtr rendered;
}
[DllImport("zint.dll",
CallingConvention = CallingConvention.StdCall,
EntryPoint = "ZBarcode_Create")]
public extern static IntPtr InitZint();
[DllImport("zint.dll",
CallingConvention = CallingConvention.StdCall,
EntryPoint = "ZBarcode_Encode_and_Buffer",
CharSet = CharSet.Ansi)]
public extern static int ZintEncode(
ref ZintSymbolStruct symbol,
string input,
int length,
int rotate_angle);
[DllImport("zint.dll",
CallingConvention = CallingConvention.StdCall,
EntryPoint = "ZBarcode_Encode_and_Print",
CharSet = CharSet.Ansi)]
public extern static int ZintEncodeAndPrint(
ref ZintSymbolStruct symbol,
string input,
int length,
int rotate_angle);
4、在窗体上绘制条码：
protected override void OnPaint(PaintEventArgs e)
{
// 初始化编码器
ZintSymbolStruct symbol = (ZintSymbolStruct)Marshal.PtrToStructure(InitZint(), typeof(ZintSymbolStruct));
// 设置编码类型
symbol.symbology = Symbology.BARCODE_QRCODE;
// 缩放
symbol.scale = 5;
// 编码内容
string s = "0123456789";
// 编码
ZintEncode(ref symbol, s, 0, 0);
// 创建一个位图，以便绘制条码
byte[] bitmapData = new byte[symbol.bitmap_width * symbol.bitmap_height * 3];
Marshal.Copy(symbol.bitmap, bitmapData, 0, bitmapData.Length);
Bitmap bitmap = new Bitmap(symbol.bitmap_width, symbol.bitmap_height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Rectangle rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
System.Drawing.Imaging.BitmapData bmpData = bitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, bitmap.PixelFormat);
IntPtr ptr = bmpData.Scan0;
int bytes = bmpData.Stride * bitmap.Height;
byte[] rgbValues = new byte[bytes];
Marshal.Copy(ptr, rgbValues, 0, bytes);
// Zint 编码生成的位图数据存放格式为 RGB，需要将其转换为 BMP 数据存放格式 BGR
int row, col;
byte red, green, blue;
int i = 0;
int l = 0;
for (row = 0; row < symbol.bitmap_height; row++)
{
l = bmpData.Stride * row;
for (col = 0; col < symbol.bitmap_width; col++)
{
red = bitmapData[i];
green = bitmapData[i + 1];
blue = bitmapData[i + 2];
rgbValues[l] = blue;
rgbValues[l + 1] = green;
rgbValues[l + 2] = red;
i += 3;
l += 3;
}
}
System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr, bytes);
bitmap.UnlockBits(bmpData);
e.Graphics.DrawImage(bitmap, 12, 12);
}
5、将目标平台更改为“x86”，运行后即可查看效果。
附源码下载。
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原文地址：http://www.cnblogs.com/apex-programs/p/4924577.html
