ASP.NET应用C++dll 返回字符串

选择字号： 超大 标准 发布时间：2014-11-7 15:27:47 | 作者：admin | 0个评论 | 人浏览

 

#include "sky_file.h"
#include <iostream> 
#include <fstream> 
#include <string> 
#include <vector> 
#include <ios> 
#include <windows.h> 

using namespace std;

 

int SkyReadFileA(char ** chr)
 {
 string file_path="";

 char buf[1000]; 
 int i=1000; 
 GetCurrentDirectory(1000,buf);  //得到当前工作路径 
 string path1(buf);

 path1=path1 + "\\txt.txt";
 file_path=  path1 ;

    file_path="H:\\工具软件\\开发工具\\ASP.DLL防止反编译\\Test\\CImportDemo\\WebApplication1\\txt.txt";
 cout<<path1<<endl; 

 //定义一个输入流 
 ifstream    input; 
 string  data_in_file3; 
 vector<string>    data_file; 

 string  dataAll;
 dataAll="";
 int iReturn;
 iReturn=0;

 input.open(file_path); 

 if(!input)
  {
  cout<<"Can't open file to input."<<endl;
  iReturn=1;

   memcpy(*chr,file_path.c_str(),file_path.length());

  return iReturn;
  }

 while (!input.eof()) 
  { 
  getline(input,data_in_file3); 
  //cout<<data_in_file3<<endl; 
  dataAll+=   data_in_file3;
  data_file.push_back(data_in_file3); 
  } 

 int n=1; 
 cout<<dataAll<<endl; 
 /*for (vector<string>::iterator i=data_file.begin();i<=data_file.cend;++i) 
 { 
 cout<<n<<*i<<endl; 
 ++n; 
 dataAll+=*i;
 }*/

 //chr= & dataAll;

 

  memcpy(*chr,dataAll.c_str(),dataAll.length());

 //chr = dataAll.c_str();
 return iReturn;
 }

int SkyReadFile( char chr )
 {
 int iReturn;
 iReturn=0;

 /*ofstream fout;
 fout.open("output.txt");

 if(!fout)
 {
 cout<<"Can't open file to output"<<endl;

 iReturn=1;

 return iReturn;
 }*/

 ifstream fin("test.txt");
 if(!fin)
  {
  cout<<"Can't open file to input."<<endl;
  iReturn=1;
  return iReturn;
  }
 return iReturn;
 }

extern "C" __declspec( dllexport ) int SkyReadFileB(char** s2 )
 {
 return SkyReadFileA(s2);

 }

 

  public static extern int Multiplication(int a, int b, ref int c);
          [DllImport("CDllProject.dll",
               EntryPoint = "SkyReadFileB",
               CharSet = CharSet.Ansi,
               CallingConvention = CallingConvention.Cdecl
              
               )]
        public static extern int SkyReadFileB(ref StringBuilder s);

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