struct tagBITMAPINFOHEADER{
  char   biSize[4]; 
  char   biWidth[4]; 
  char   biHeight[4]; 
  char   biPlanes[2]; 
  char   biBitCount[2]; 
  char   biCompression[4]; 
  char   biSizeImage[4]; 
  char   biXPelsPerMeter[4]; 
  char   biYPelsPerMeter[4]; 
  char   biClrUsed[4]; 
  char   biClrImportant[4]; 
} BITMAPINFOHEADER; 

struct tagBITMAPFILEHEADER { 
  char    bfType[3]; 
  char    bfSize[4]; 
  char    bfReserved1[2]; 
  char    bfReserved2[2]; 
  char    bfOffBits[4]; 
} BITMAPFILEHEADER; 

typedef struct tagRGBQUAD {
  char    rgbBlue[1]; 
  char    rgbGreen[1]; 
  char    rgbRed[1]; 
  char    rgbReserved[1]; 
} RGBQUAD;