在目录C中查找最后一个创建的FILE [英] Finding the last created FILE in the directory, C++

问题描述

即使我搜索了互联网，也没有像我这样的问题.我的问题是，我想获取目录中创建的最后一个文件的名称.我的系统将在此代码的目录中创建来自我的相机的/.png文件，我希望我的代码采用最近创建的文件.我想用这段代码来做

Even though I searched there isn't any problem like mine in the internet. my problem is, I want to get the name of the last file created in the directory. My system will create /.png files coming from my Camera in the directory of this code and I want my code to the take last created one. I want do it with this code,

string processName()
{
   // FILETIME Date = { 0, 0 };
   // FILETIME curDate;
   long long int curDate = 0x0000000000000000;
   long long int date    = 0x0000000000000000;
   //CONST FILETIME date={0,0};
   //CONST FILETIME curDate={0,0};
   string name;
   CFileFind finder;
   FILETIME* ft; 

   BOOL bWorking = finder.FindFile("*.png");
   while (bWorking)
   {

      bWorking = finder.FindNextFile();

      date = finder.GetCreationTime(ft) ;

      //ftd.dwLowDateTime  = (DWORD) (date & 0xFFFFFFFF );
      //ftd.dwHighDateTime = (DWORD) (date >> 32 );


      if ( CompareFileTime(date, curDate))
      {
          curDate = date;
          name = (LPCTSTR) finder.GetFileName();
      }



   }
   return name;
}

我没有使用额外的库，因此我在链接中使用了以下库:

I didnt use extra libraries I used the following one as it can be seen in the link :

https://msdn.microsoft.com/en-US/library/67y3z33c(v=vs.80).aspx

在这段代码中，我尝试将初始值赋予64位FILETIME变量，并将其与while循环进行比较.但是我得到以下错误.

In this code I tried to give initial values to 64 bit FILETIME variables, and compare them with this while loop. However I get the following errors.

1   IntelliSense: argument of type "long long" is incompatible with parameter of type "const FILETIME *"        44  25  
2   IntelliSense: argument of type "long long" is incompatible with parameter of type "const FILETIME *"        44  31  

getCreationTime方法采用一个参数作为

getCreationTime method take one parameter as

参数:pTimeStamp:指向包含文件创建时间的FILETIME结构的指针.

Parameters: pTimeStamp: A pointer to a FILETIME structure containing the time the file was created.

refTime:对CTime对象的引用.

refTime: A reference to a CTime object.

推荐答案

我想我已经修复了您的代码.必须更改某些类型，例如:

I think I fixed your code. Had to change some types etc:

string processName()
{
    FILETIME bestDate = { 0, 0 };
    FILETIME curDate;
    string name;
    CFileFind finder;

    finder.FindFile("*.png");
    while (finder.FindNextFile())
    {
        finder.GetCreationTime(&curDate);

        if (CompareFileTime(&curDate, &bestDate) > 0)
        {
            bestDate = curDate;
            name = finder.GetFileName().GetString();
        }
    }
    return name;
}

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