typedef struct
	{
		// bitmap identity
		WORD_t		ident;

		// complete image size including header
		DWORD_t		img_size;

		// reserved space
		WORD_t		rsvd_a;

		// reserved space
		WORD_t		rsvd_b;

		// begin of data. offset position
		DWORD_t		data_off;

		// img header size
		DWORD_t		hdr_size;

		// image width
		sDWORD_t	img_width;

		// image height
		sDWORD_t	img_height;

		// number of color planes
		WORD_t		num_clr_planes;

		// bits per pixel
		WORD_t		bpp;

		// compression type
		DWORD_t		comp_type;

		// the size of img data info block 
		DWORD_t		bdata_size;

		// horizontal resolution in pixel per meter
		sDWORD_t	hor_res;

		// vertical resolution in pixel per meter
		sDWORD_t	ver_res;

		// number of colors in color table
		DWORD_t		num_col;

		// number of important colors used
		DWORD_t		num_import_col;

	} bmphdr_t;


std::ifstream file("out.txt", std::ios::in | std::ios::binary);
	
io::bmphdr_t header;
	
if(file.fail()) return 0;

// move to begin
file.seekg(std::ios::beg);

// read header
file.read((char*)&header, sizeof(header));

// close file
file.close();