• 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。

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  • 原文地址:https://www.cnblogs.com/lowdys/p/3232677.html
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