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。