本文共 2378 字，大约阅读时间需要 7 分钟。

typedef unsigned char BYTE;typedef unsigned short WORD;typedef unsigned int DWORD;typedef unsigned long LONG;#pragma pack(1)typedef struct tagBITMAPFILEHEADER {    WORD    bfType;    DWORD   bfSize;    WORD    bfReserved1;    WORD    bfReserved2;    DWORD   bfOffBits;} BITMAPFILEHEADER;typedef struct tagBITMAPINFOHEADER {    DWORD      biSize;    LONG       biWidth;    LONG       biHeight;    WORD       biPlanes;    WORD       biBitCount;    DWORD      biCompression;    DWORD      biSizeImage;    LONG       biXPelsPerMeter;    LONG       biYPelsPerMeter;    DWORD      biClrUsed;    DWORD      biClrImportant;} BITMAPINFOHEADER;typedef struct tagRGBQUAD {    BYTE    rgbBlue;    BYTE    rgbGreen;    BYTE    rgbRed;    BYTE    rgbReserved;} RGBQUAD;#pragma pack()void SaveImg(unsigned char * pData, int iWidth, int iHeight, string strPath){    BITMAPFILEHEADER targetfileheader;    BITMAPINFOHEADER targetinfoheader;    memset(&targetfileheader, 0, sizeof(BITMAPFILEHEADER));    memset(&targetinfoheader, 0, sizeof(BITMAPINFOHEADER));    targetfileheader.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);    targetinfoheader.biSize = iWidth * iHeight + sizeof(RGBQUAD) * 256 + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);    targetfileheader.bfReserved1 = 0;    targetfileheader.bfReserved2 = 0;    targetfileheader.bfType = 0x4D42;    targetinfoheader.biBitCount = 8;    targetinfoheader.biSize = sizeof(BITMAPINFOHEADER);    targetinfoheader.biHeight = iHeight;    targetinfoheader.biWidth = iWidth;    targetinfoheader.biPlanes = 1;    targetinfoheader.biCompression = 0;    targetinfoheader.biSizeImage = 0;    targetinfoheader.biXPelsPerMeter = 0;    targetinfoheader.biYPelsPerMeter = 0;    targetinfoheader.biClrImportant = 0;    targetinfoheader.biClrUsed = 0;    RGBQUAD rgbquad[256];    for (int i = 0; i < 256; i++)    {        rgbquad[i].rgbBlue = i;        rgbquad[i].rgbGreen = i;        rgbquad[i].rgbRed = i;        rgbquad[i].rgbReserved = 0;    }    FILE * fp = fopen(strPath.c_str(), "wb");    fwrite(&targetfileheader, sizeof(BITMAPFILEHEADER), 1, fp);    fwrite(&targetinfoheader, sizeof(BITMAPINFOHEADER), 1, fp);    fwrite(&rgbquad, sizeof(RGBQUAD), 256, fp);    for (int i = 0; i < iHeight; i++)    {        fwrite(pData + (iHeight - 1 - i) * iWidth, iWidth, 1, fp);    }    fclose(fp);}

转载地址：http://gglai.baihongyu.com/