// class blabla
public:
        typedef struct objBITMAPFILEHEADER
        {
                unsigned short bfType;
                unsigned int bfSize;
                unsigned short bfReserved1;
                unsigned short bfReserved2;
                unsigned int bfOffBits;
        } BITMAPFILEHEADER;
        typedef struct objBITMAPINFOHEADER
        {
               unsigned int biSize;
               unsigned int biWidth;
               unsigned int biHeight;
               unsigned short biPlanes;
               unsigned short biBitCount;
               unsigned int biCompression;
               unsigned int biSizeImage;
               unsigned int biXPelsPerMeter;
               unsigned int biYPelsPerMeter;
               unsigned int biClrUsed;
               unsigned int biClrImportant;
         } BITMAPINFOHEADER;

         BITMAPFILEHEADER realBITMAPFILEHEADER;
         BITMAPINFOHEADER realBITMAPINFOHEADER;
         void read_bitmap_f(BITMAPFILEHEADER &);
         void read_bitmap_i(BITMAPINFOHEADER &);;

////////////////////////////



std::fstream imgf;
blabla::blabla(const char * name_of_img_)
{
    imgf.open(name_of_img_, std::ios_base::in | std::ios_base::out | std::ios::binary);
    blabla::read_bitmap_f(blabla::realBITMAPFILEHEADER);
    blabla::read_bitmap_i(blabla::realBITMAPINFOHEADER);
    //ctor
}