How to use "kernel32::CompareFileTime"

[Jinsong Zhang]

Please, how to use "kernel32::CompareFileTime" in MQL5? thanks very much.

[Jinsong Zhang]

Here is my code, but I think the result is wrong.

#import "Kernel32.dll"

int CompareFileTime(string FilePath1, string FilePath2);
#import

string aa="E:\\Temp\\test1.txt";
string bb="E:\\Temp\\test1.txt";
string cc="E:\\Temp\\test2.txt";
void OnStart()
{
   int res1=-2,res2=-2;
   res1=kernel32::CompareFileTime(aa,bb);
   res2=kernel32::CompareFileTime(aa,cc);
   Print(res1," ",res2);
}

 

[Jinsong Zhang]

and, how to use "kernel32::GetFileSize"? Thanks

[Slava]

CompareFileTime Function

Compares two file times.

LONG WINAPI CompareFileTime(
  __in          const FILETIME* lpFileTime1,
  __in          const FILETIME* lpFileTime2
);

Parameters

lpFileTime1

A pointer to a FILETIME structure that specifies the first file time.

lpFileTime2

A pointer to a FILETIME structure that specifies the second file time.

[Slava]

song_song:
and, how to use "kernel32::GetFileSize"? Thanks

Welcome to the MSDN

[Jinsong Zhang]

stringo:

CompareFileTime Function

Compares two file times.

Parameters

lpFileTime1

A pointer to a FILETIME structure that specifies the first file time.

lpFileTime2

A pointer to a FILETIME structure that specifies the second file time.

Thanks, stringo. If I have to use "FindFirstFile" first? Can I use "kernel32::FindFirstFile" in MQL5? If I can, what's the type of WIN32_FIND_DATA in MQL5?

[Slava]

song_song:
Thanks, stringo. If I have to use "FindFirstFile" first? Can I use "kernel32::FindFirstFile" in MQL5? If I can, what's the type of WIN32_FIND_DATA in MQL5?

All the our structures are described in the documentation. There is no WIN32_FIND_DATA structure in MQL5.

You can use kernel32::FindFirstFile in MQL5. How to use see MSDN 

[Jinsong Zhang]

I find out some example:

https://www.mql5.com/en/articles/1543

 https://www.mql5.com/en/articles/1540

 https://www.mql5.com/en/forum/103578

 https://www.mql5.com/en/forum/109016/page2#82656

[Jinsong Zhang]

stringo:

All the our structures are described in the documentation. There is no WIN32_FIND_DATA structure in MQL5.

You can use kernel32::FindFirstFile in MQL5. How to use see MSDN 

Please test my code, it always return -1.  I am sure there are .ex5 files in that folder. What's wrong?

#import "Kernel32.dll"
int FindFirstFileA(string FilePath, int& lpFindFileData[]);
int FindClose(int hFile);
#import

string file1="D:\MetaTrader5\MQL5\Experts\*.ex5";

void OnStart()
{
   
   int win32_DATA[79];
   int hFile=kernel32::FindFirstFileA(file1,win32_DATA);
   Print(hFile);
   if(hFile>0)FindClose(hFile);
}

 

[Slava]

Why FindFirstFileA? There is ANSI version.

Use unicode version FindFirstFileW 

[Jinsong Zhang]

stringo:

Why FindFirstFileA? There is ANSI version.

Use unicode version FindFirstFileW 

Thank you very much!