Welcome to the MQL4 course

**codersguru** · 11-21-2005 12:14 PM

Originally Posted by barry

Coders guru,
I add my thanks to the others. What a wonderful act of generosity this is!

I have picked up a tiny error for you: in Q2 part 3, and in it's answer, there is a typo- metalang.exe vs metalnag.exe.

barry,
Thank you very much, I've corrected them.

**dude007** · 11-23-2005 07:31 AM

This is a great thread. Thanx for all your help Codersguru. I am sure it will help alot of us. Cant wait for your next lesson.

**codersguru** · 11-24-2005 05:40 PM

Originally Posted by dude007

This is a great thread. Thanx for all your help Codersguru. I am sure it will help alot of us. Cant wait for your next lesson.

Thanks dude.

Please download the new lesson and tell me what do you think?

**saslam** · 12-06-2005 03:00 PM

This is agreat course. I went through the lessons until the first custom indicator. I have some understanding, but not thorogh. I hope in due course I will get the hang of it. THANK YOU CODEGURU for putting together this course.

I tried to convert one of my simple indicator from mql2, but there is something wrong. Can you check it?

**codersguru** · 12-07-2005 09:38 PM

Originally Posted by saslam

This is agreat course. I went through the lessons until the first custom indicator. I have some understanding, but not thorogh. I hope in due course I will get the hang of it. THANK YOU CODEGURU for putting together this course.

I tried to convert one of my simple indicator from mql2, but there is something wrong. Can you check it?

saslam,

Please try this code:

PHP Code:


//+------------------------------------------------------------------+
//|                                                     2PROC.mq4 |
//|                                                         saslam |
//|                                     http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "saslam"
#property link      "http://www.metaquotes.net"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Blue
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];

//----
//int ExtCountedBars=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,ExtMapBuffer2);
   string short_name = "2PROC";
   IndicatorShortName(short_name);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                     |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                             |
//+------------------------------------------------------------------+
int start()
  {
   int pos;
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;

   pos=Bars-counted_bars;
   
   

//---- main calculation loop
   while(pos>=0)
   {
// ----Main loop   
 
      ExtMapBuffer1[pos]=(Close[pos+1]-Close[pos+3])+Close[pos+2];
      ExtMapBuffer2[pos]=(Close[pos+0]-Close[pos+2])+Close[pos+1];
      pos--;
      }
     
//----
   return(0);
  }
//+------------------------------------------------------------------+

**saslam** · 12-08-2005 01:41 PM

Thanks Codesguru, it is working now. I realize my mistake. Looking forward to your future lessons on Indicators.

**JN75** · 12-09-2005 04:43 AM

Coders' guru,

I am very new to metatrader and know very little about programing. I was looking for info on programming in metatrader. And came across your course (which made me decide to join). I look forward to learning from your course and your posts!!! Thanks again!

**codersguru** · 12-09-2005 03:43 PM

Originally Posted by JN75

Coders' guru,

I am very new to metatrader and know very little about programing. I was looking for info on programming in metatrader. And came across your course (which made me decide to join). I look forward to learning from your course and your posts!!! Thanks again!

JN75,

You're welcome!
I hope you find it a useful place.