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  #1 (permalink)  
Old 12-02-2005, 02:13 PM
murky waters murky waters is offline
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quick question
question: how do you write an "if" function that triggers code at the END of each bar on the chart (which works independent of chart timeframe)?
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  #2 (permalink)  
Old 12-02-2005, 04:13 PM
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codersguru codersguru is offline
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Exclamation Welcome!
Quote:
Originally Posted by murky waters
question: how do you write an "if" function that triggers code at the END of each bar on the chart (which works independent of chart timeframe)?
murky waters,
Welcome to our forum!

Test this code:

PHP Code:
bool NewBar() //this function will return true if there's a new bar.
   {
      
      static bool first_call = true;
      static int start_bar = 0;
      if(first_call)
      {
         start_bar=Bars;
         first_call=false;
      }
      if(Bars == (start_bar+1))
      {
         first_call=true;
         return (true);
      }
      else
      {
         return (false);
      }
   } 

int start() //<-- in your start function you may use code like this
{
    if (NewBar)
    {
       //do something
    }
    return (0);
} 
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Hope it helps !
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Senior MQL programmer:
www.xpworx.com/custom.htm
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  #3 (permalink)  
Old 12-02-2005, 04:22 PM
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amarnath amarnath is offline
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Thumbs up Really great job
Hi coderguru,

Your are really doing a gr8 job here . Keep up good works
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  #4 (permalink)  
Old 12-05-2005, 12:59 PM
murky waters murky waters is offline
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codersguru,

Thank you for the quick reply. However when testing your code in the meta editor, I recieve the error NewBar: variable not defined. For the code:

PHP Code:
//+------------------------------------------------------------------+
//|                                                    test_bars.mq4 |
//|                                                      ©2005,  S T |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "©2005, S T"
#property link      ""

//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {

   return(0);
  }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit()
  {

   return(0);
  }

bool NewBar() //this function will return true if there's a new bar. 
   { 
       
      static bool first_call = true; 
      static int start_bar = 0; 
      if(first_call) 
      { 
         start_bar=Bars; 
         first_call=false; 
      } 
      if(Bars == (start_bar+1)) 
      { 
         first_call=true; 
         return (true); 
      } 
      else 
      { 
         return (false); 
      } 
   } 

int start() //<-- in your start function you may use code like this 
{ 
    if (NewBar) 
    { 
       //do something 
    } 
    return (0); 
} 
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  #5 (permalink)  
Old 12-05-2005, 05:09 PM
codersguru's Avatar
codersguru codersguru is offline
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Unhappy Missed ()
murky ,

I'm sorry, missed () in the line:
if (NewBar())

Try this code and tell me what do you think:

PHP Code:
//+------------------------------------------------------------------+
//|                                                    test_bars.mq4 |
//|                                                      ©2005,  S T |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "©2005, S T"
#property link      ""

//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {

   return(0);
  }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit()
  {

   return(0);
  }

bool NewBar() //this function will return true if there's a new bar. 
   { 
       
      static bool first_call = true; 
      static int start_bar = 0; 
      if(first_call) 
      { 
         start_bar=Bars; 
         first_call=false; 
      } 
      if(Bars == (start_bar+1)) 
      { 
         first_call=true; 
         return (true); 
      } 
      else 
      { 
         return (false); 
      } 
   } 

int start() //<-- in your start function you may use code like this 
{ 
    if (NewBar()) 
    { 
       //do something 
    } 
    return (0); 
} 
__________________
Hope it helps !
Coders' Guru
Senior MQL programmer:
www.xpworx.com/custom.htm
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Old 03-02-2006, 03:40 AM
cardio cardio is offline
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Great Code
Thanks Codersguru
You help me greatly
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  #7 (permalink)  
Old 03-30-2006, 01:08 PM
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intelligent_14 intelligent_14 is offline
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Another Way
I prefer to use this solution for finding new Bars

HTML Code:
bool NewBar()
  {
  static datetime LastTime;
  if (LastTime != Time[0])
    {
    LastTime = Time[0];
    return(true);
    }
  return(false);
  }
it's seems to be shorter
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Old 03-30-2006, 02:02 PM
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codersguru codersguru is offline
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Arrow
Quote:
Originally Posted by intelligent_14
I prefer to use this solution for finding new Bars

HTML Code:
bool NewBar()
  {
  static datetime LastTime;
  if (LastTime != Time[0])
    {
    LastTime = Time[0];
    return(true);
    }
  return(false);
  }
it's seems to be shorter
Yes this is good one!
__________________
Hope it helps !
Coders' Guru
Senior MQL programmer:
www.xpworx.com/custom.htm
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  #9 (permalink)  
Old 03-30-2006, 06:27 PM
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intelligent_14 intelligent_14 is offline
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Quote:
Originally Posted by codersguru
Yes this is good one!
thank u codersguru, i had read all of your MQL4 tutorial, its very good, i finished it 2 weeks ago

thanks a lot
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