Download MetaTrader 5

Watch how to download trading robots for free

Interesting script?
So post a link to it -
let others appraise it

You liked the script? Try it in the MetaTrader 5 terminal

2013.03.29 11:55
Scripts

Demo_FileFlush - script for MetaTrader 5

| English Русский 中文 Español Deutsch 日本語 Português

Views:
2075
Rating:
votes: 23

When writing to a file, the data may be actually found there only after some time. To save the data in the file instantly, use the FileFlush() function. If the function is not used, part of the data that has not been stored in the disk yet, will be forcibly written there only when the file is closed using the FileClose() function.

The script in the loop gets the current Bid and Ask prices data and calls the FileWrite() function to write them. At each 128 iteration the FileFlush() function is called for the forced reset of pre-written data to disk.

Code:

//--- show the window of input parameters when launching the script
#property script_show_inputs
//--- file name for writing
input string InpFileName="example.csv"; // file name
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//--- reset error value
   ResetLastError();
//--- open the file
   int file_handle=FileOpen(InpFileName,FILE_READ|FILE_WRITE|FILE_CSV);
   if(file_handle!=INVALID_HANDLE)
     {
      //--- write data to the file
      for(int i=0;i<1000;i++)
        {
         //--- call write function
         FileWrite(file_handle,TimeCurrent(),SymbolInfoDouble(Symbol(),SYMBOL_BID),SymbolInfoDouble(Symbol(),SYMBOL_ASK));
         //--- save data on the disk at each 128th iteration
         if((i & 127)==127)
           {
            //--- now, data will be located in the file and will not be lost in case of a critical error
            FileFlush(file_handle);
            PrintFormat("i = %d, OK",i);
           }
         //--- 0.01 second pause
         Sleep(10);
        }
      //--- close the file
      FileClose(file_handle);
     }
   else
      PrintFormat("Error, code = %d",GetLastError());
  }

Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/1615

Demo_FileMove Demo_FileMove

The script demonstrates the example of using the FileMove() function

The20sv0.20 The20sv0.20

The semaphore trend signal indicator

i-IntradayFibonacci i-IntradayFibonacci

Intraday Fibonacci levels

Demo_FileIsEnding Demo_FileIsEnding

The script demonstrates the example of using the FileIsEnding() function