Writing structure in a unsigned char array

I want to write the 2 structures of the bmp file into a buffer of unsigned char.Infact i am trying to write the whole bitmap into a buffer of usigned char, including headers and data. Can any one tell me how it is possible?


I am trying to write the following structues in the memory allocated as "unsigned char Bitmap[IHeader.BiSizeImage];

////////////////////////Structure for the BMP file header/////////

struct BmpFileHeader
{
unsigned short BfType;
unsigned long BfSize;
unsigned short BfReserved1;
unsigned short BfReserved2;
unsigned long BfOffBits;

};



///////////////////////Structure for the BMP Image Header/////////

struct BmpImageHeader
{
unsigned long BiSize;
unsigned long BiWidth;
unsigned long BiHieght;
unsigned short BiPlanes;
unsigned short BiBitCount;
unsigned long BiCompression;
unsigned long BiSizeImage;
unsigned long BiXPixPerMeter;
unsigned long BiYPixPerMeter;
unsigned long BiColorUsed;
unsigned long BiColorImportant;
};

Why as an unsigned char buffer, and not as a structure buffer? Oh well, it's your decision :).

Code:

---

typedef struct
{
  unsigned short BfType;
  unsigned long BfSize;
  unsigned short BfReserved1;
  unsigned short BfReserved2;
  unsigned long BfOffBits;
}BmpFileHeader;

typedef struct
{
  unsigned long BiSize;
  unsigned long BiWidth;
  unsigned long BiHieght;
  unsigned short BiPlanes;
  unsigned short BiBitCount;
  unsigned long BiCompression;
  unsigned long BiSizeImage;
  unsigned long BiXPixPerMeter;
  unsigned long BiYPixPerMeter;
  unsigned long BiColorUsed;
  unsigned long BiColorImportant;
}BmpImageHeader;

int main()
{
  unsigned char* FileBuffer;
  unsigned char* ImageBuffer;

  FileBuffer = new unsigned char[sizeof(BmpFileHeader)];
  if(FileBuffer == NULL)
  {
      return 0;
  }

  ImageBuffer = new unsigned char[sizeof(BmpImageHeader)];
  if(ImageBuffer == NULL)
  {
      delete[] FileBuffer;
      return 0;
  }

  ...

  delete[] FileBuffer;
  delete[] ImageBuffer;
  retun 0;
}

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