Re: How do I write exception safty code?

I want to write some small programs with exception safety, but I don't how
to write. Because my programs wrap C-api function( example: win32 api). I
don't find my direction. I wish any hot heart man to help me. My english is
too bad. I am sorry! Thanks!

#include "windows.h"
#include <string>
//
#ifndef FILE1_H
#define FILE1_H
namespace wukexin{
//
 std::string Fileattrib_to_str( const DWORD attrib );
//
 std::string Filetime_to_str( const FILETIME* x );
//
 class Cfile_information
 {
 public:
  explicit Cfile_information(std::string fname){initializer(fname);};
  //~Cfile_information(){destroyer();};
  void print();
 protected:
  //friend ostream& operator<< (std::ostream& os, const Cfile_information&
file);
 private:
  void initializer(std::string fname);
  void destroyer();
  bool destroySuccess_;
  HANDLE hfile_;
  std::string fname_;
  WIN32_FIND_DATA file_;
 };}

#endif //file1.h
////////////////
file.cpp
//**
 void Cfile_information::initializer(std::string fname){
  WIN32_FIND_DATA file;
  //std::cout<<fname<<"construct success!\n";
  hfile_=FindFirstFile(fname.c_str(),&file_);
  if(INVALID_HANDLE_VALUE == hfile_){
   //std::cout<<"FindFirstFile(fname,&file) run error!\n"<<std::endl;
   throw <<"FindFirstFile(fname,&file) run error!\n";
  }
  destroySuccess_=false;
 }
 //
 Cfile_information::~Cfile_information(){
  if( !destroySuccess_ ){
   try{
    destroyer();
   }
   catch(){
    // codes
   }
 };
//**

 std::string Fileattrib_to_str( const DWORD attrib );