C + + read BMP file

#include <string>#include<vector>#include<fstream>using namespacestd;classcbmpfile{ Public: Cbmpfile () {}~Cbmpfile () {}BOOLLoadConst string&file) {        //Open FileIfstream fs (file, Ios_base::inch| Ios_base::beg |ios_base::binary); if(!Fs.is_open ()) {            return false; }        //Read File FlagsFs.read ((Char*) &m_tag,sizeof(WORD)); if(M_tag! =0x4d42){            return false; }        //Read file headerFs.read ((Char*) &m_fileheader,sizeof(M_fileheader)); if(Fs.gcount ()! =sizeof(M_fileheader)) {            return false; }        //Read Bitmap information headerFs.read ((Char*) &m_infoheader,sizeof(M_infoheader)); if(Fs.gcount ()! =sizeof(M_infoheader)) {            return false; }        //Palette DataM_palette.resize (M_fileheader.bfoffbits-sizeof(M_tag)-sizeof(M_fileheader)-sizeof(M_infoheader)); Fs.read (&m_palette[0], m_palette.size ()); //reading bitmap DataM_data.resize (M_fileheader.bfsize-m_fileheader.bfoffbits); Fs.read (&m_data[0], m_data.size ()); if(Fs.gcount ()! =m_data.size ()) {            return false;        } fs.close (); return true;    } WORD M_tag;    Bitmapfileheader M_fileheader;    Bitmapinfoheader M_infoheader; Vector<Char>M_palette; Vector<Char>m_data;Private: typedef unsignedCharBYTE; typedef unsigned ShortWORD; typedef unsignedLongDWORD; typedefLongLONG; //bitmap file header definition; typedefstruct{DWORD bfsize;//File SizeWORD bfReserved1;//Reserved WordsWORD BfReserved2;//Reserved WordsDWORD bfoffbits;//The number of offset bytes from the file header to the actual bitmap data}bitmapfileheader; typedefstruct{DWORD bisize;//Information Header sizeLONG Biwidth;//Image WidthLONG Biheight;//Image HeightWORD biplanes;//number of bit planes, must be 1WORD biBitCount;//number of bits per pixelDWORD bicompression;//Compression TypeDWORD biSizeImage;//compressed image size bytesLONG Bixpelspermeter;//Horizontal ResolutionLONG Biypelspermeter;//Vertical ResolutionDWORD biclrused;//the number of colors that the bitmap actually usesDWORD biclrimportant;//the number of important colors in a standard chart}bitmapinfoheader;//Bitmap information Header definition};

C + + read BMP file