分享一个二维码库，LibQREncode

库下载地址：http://pan.baidu.com/share/link?shareid=665942038&uk=1007415423

建立一个工程，库是源码，直接添加头文件和c文件即可，不必多说。

#include "stdafx.h"
#include <string.h>
#include <errno.h>
#include <conio.h>
#include <ctype.h>
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <wchar.h>

#include "qrencode.h"
//	-------------------------------------------------------


//	-------------------------------------------------------
//	DEFines
//	-------------------------------------------------------

#define QRCODE_TEXT					"我叫余X，今年25岁，性别男，爱好女。有需要的可联系我：1867007546x。具体情况详谈。";		// Text to encode into QRCode
#define OUT_FILE					"C:/test.bmp"								// Output file name
#define OUT_FILE_PIXEL_PRESCALER	8											// Prescaler (number of pixels in bmp file for each QRCode pixel, on each dimension)

#define PIXEL_COLOR_R				0											// Color of bmp pixels
#define PIXEL_COLOR_G				0
#define PIXEL_COLOR_B				0

	// BMP defines

typedef unsigned short	WORD;
typedef unsigned long	DWORD;
typedef signed long		LONG;

#define BI_RGB			0L

#pragma pack(push, 2)

typedef struct  
	{
	WORD    bfType;
	DWORD   bfSize;
	WORD    bfReserved1;
	WORD    bfReserved2;
	DWORD   bfOffBits;
	} BITMAPFILEHEADER;

typedef struct 
	{
	DWORD      biSize;
	LONG       biWidth;
	LONG       biHeight;
	WORD       biPlanes;
	WORD       biBitCount;
	DWORD      biCompression;
	DWORD      biSizeImage;
	LONG       biXPelsPerMeter;
	LONG       biYPelsPerMeter;
	DWORD      biClrUsed;
	DWORD      biClrImportant;
	} BITMAPINFOHEADER;

#pragma pack(pop)
//	-------------------------------------------------------


//	-------------------------------------------------------
//	Main
//	-------------------------------------------------------

int _tmain(int argc, _TCHAR* argv[])
{
char*			szSourceSring = QRCODE_TEXT;
unsigned int	unWidth, x, y, l, n, unWidthAdjusted, unDataBytes;
unsigned char*	pRGBData, *pSourceData, *pDestData;
QRcode*			pQRC;
FILE*			f;

		// Compute QRCode

	if (pQRC = QRcode_encodeString(szSourceSring, 0, QR_ECLEVEL_H, QR_MODE_8, 1))
		{
		unWidth = pQRC->width;
		unWidthAdjusted = unWidth * OUT_FILE_PIXEL_PRESCALER * 3;
		if (unWidthAdjusted % 4)
			unWidthAdjusted = (unWidthAdjusted / 4 + 1) * 4;
		unDataBytes = unWidthAdjusted * unWidth * OUT_FILE_PIXEL_PRESCALER;

			// Allocate pixels buffer

		if (!(pRGBData = (unsigned char*)malloc(unDataBytes)))
			{
			printf("Out of memory");
			exit(-1);
			}
			
			// Preset to white

		memset(pRGBData, 0xff, unDataBytes);


			// Prepare bmp headers

		BITMAPFILEHEADER kFileHeader;
		kFileHeader.bfType = 0x4d42;  // "BM"
		kFileHeader.bfSize =	sizeof(BITMAPFILEHEADER) +
								sizeof(BITMAPINFOHEADER) +
								unDataBytes;
		kFileHeader.bfReserved1 = 0;
		kFileHeader.bfReserved2 = 0;
		kFileHeader.bfOffBits =	sizeof(BITMAPFILEHEADER) +
								sizeof(BITMAPINFOHEADER);

		BITMAPINFOHEADER kInfoHeader;
		kInfoHeader.biSize = sizeof(BITMAPINFOHEADER);
		kInfoHeader.biWidth = unWidth * OUT_FILE_PIXEL_PRESCALER;
		kInfoHeader.biHeight = -((int)unWidth * OUT_FILE_PIXEL_PRESCALER);
		kInfoHeader.biPlanes = 1;
		kInfoHeader.biBitCount = 24;
		kInfoHeader.biCompression = BI_RGB;
		kInfoHeader.biSizeImage = 0;
		kInfoHeader.biXPelsPerMeter = 0;
		kInfoHeader.biYPelsPerMeter = 0;
		kInfoHeader.biClrUsed = 0;
		kInfoHeader.biClrImportant = 0;


			// Convert QrCode bits to bmp pixels

		pSourceData = pQRC->data;
		for(y = 0; y < unWidth; y++)
			{
			pDestData = pRGBData + unWidthAdjusted * y * OUT_FILE_PIXEL_PRESCALER;
			for(x = 0; x < unWidth; x++)
				{
				if (*pSourceData & 1)
					{
					for(l = 0; l < OUT_FILE_PIXEL_PRESCALER; l++)
						{
						for(n = 0; n < OUT_FILE_PIXEL_PRESCALER; n++)
							{
							*(pDestData +		n * 3 + unWidthAdjusted * l) =	PIXEL_COLOR_B;
							*(pDestData + 1 +	n * 3 + unWidthAdjusted * l) =	PIXEL_COLOR_G;
							*(pDestData + 2 +	n * 3 + unWidthAdjusted * l) =	PIXEL_COLOR_R;
							}
						}
					}
				pDestData += 3 * OUT_FILE_PIXEL_PRESCALER;
				pSourceData++;
				}
			}


			// Output the bmp file

		if (!(fopen_s(&f, OUT_FILE, "wb")))
			{
			fwrite(&kFileHeader, sizeof(BITMAPFILEHEADER), 1, f);
			fwrite(&kInfoHeader, sizeof(BITMAPINFOHEADER), 1, f);
			fwrite(pRGBData, sizeof(unsigned char), unDataBytes, f);
			
			fclose(f);
			}
		else
			{
			printf("Unable to open file");
			exit(-1);
			}

			// Free data

		free(pRGBData);
		QRcode_free(pQRC);
		}
	else
		{
		printf("NULL returned");
		exit(-1);
		}

	return 0;
}

亲测可用，也可自己封装动态库，懂的自己写。也可以在二维码中间扣除一部分空间，加入logo，二维码的纠错能力还是可以的，我自己用ps扣了一点没关系，也可以在生成是直接将logo加入到指定的位置生成出来。

生成图：

不必多说，每次的附图，哪天没图了，就是被妹子收养了。