Jump to content

Welcome to the new Traders Laboratory! Please bear with us as we finish the migration over the next few days. If you find any issues, want to leave feedback, get in touch with us, or offer suggestions please post to the Support forum here.

  • Welcome Guests

    Welcome. You are currently viewing the forum as a guest which does not give you access to all the great features at Traders Laboratory such as interacting with members, access to all forums, downloading attachments, and eligibility to win free giveaways. Registration is fast, simple and absolutely free. Create a FREE Traders Laboratory account here.

jimbo320

Indicators in C++ Help Needed

Recommended Posts

Hi, Im looking to add custom painting on top of the new C++ custom indicators. Currently in beta (you can download on the site).

 

Right now im looking to add custom plot features. What is it important to add at this stage. Should i add an individual callback for each bar to paint it? See the base class and the extra feature in bold.

 

If anyone wants to start writing some custom indicators, please sign up on the beta programme.

 

Base class definition follows.

 

//////////////////////////////////////////////////////////////////////////////

// Class : CCustomObject //

// Filename : CCustomObject.h //

// Module/App : Trader //

// Project : Atrader //

//////////////////////////////////////////////////////////////////////////////

// Copyright : ATRADER.ORG //

// //

// This is an unpublished work the copyright in which vests in //

// ATRADER. All rights reserved. The information herein is the //

// property of ATRADER and is supplied without liability for errors or //

// ommissions. No part may be reproduced or used except as authorised //

// by contract or other written permission. The copyright and the //

// foregoing restriction on reproduction and use extend to all the media //

// in which this information may be embodied. //

//////////////////////////////////////////////////////////////////////////////

// Remarks: //

// //

// //

// //

//////////////////////////////////////////////////////////////////////////////

 

#ifndef _EXTCUSTOMOBJECT_H_

#define _EXTCUSTOMOBJECT_H_

 

#include <vector>

#include <string>

 

class CElement;

 

#include "EXT/EXTDll.h"

#include "EXT/EXTDefs.h"

 

 

typedef std::vector<int> INTEGERLIST;

typedef std::vector<double> DOUBLELIST;

 

 

//------------------------------------------------

// All Custom Indicators should be derived from CCustomObject

class EXT_API CCustomObject : public CObject

{

DECLARE_SERIAL( CCustomObject );

public:

 

// Empty constructor is required

CCustomObject();

CCustomObject(ECustomType type) ;

 

// Copy constructor

CCustomObject(const CCustomObject& another);

CCustomObject& operator=(const CCustomObject& another);

 

public:

 

// Virtual Destructor is required

virtual ~CCustomObject();

 

// This is the data displayed in the chart parameters

virtual CString GetItemString() const;

virtual CString GetTitleString() const;

virtual CString GetShortTitleString() const;

 

// Returns true if the date is the object is valid otherwise false

virtual bool CheckExpirationDate(const CString strDate) const;

 

// Called when the indicator is be initialised from ATRADER

virtual void Initialise(double param1, double param2, double param3);

 

protected:

void CopyObject(const CCustomObject& another);

void Init(void);

 

public:

 

// Override these functions to do your custom processing

virtual void Calculate();

virtual double CalculateLast();

// perform custom painting on the device context here

virtual void PaintBar(int barPos, int ScalingPixelsPerTick, CDC* pDC) or render it in one go..

virtual void PaintSeries(CDC* pDC) or

 

 

// Called when the time frame has been recalcuated and the series need to be recalculated in its entirety

virtual void Recalculate(void);

 

virtual void ClearData();

 

// Called to update the series with data at end of bar

virtual void AddData(const time_t& time, const double& fOpen, const double& fHigh, const double& fLow, const double& fClose, const int& fVolume);

 

// Called to update the indicator based on a real time intra bar update

virtual void UpdateData(const time_t& time, const double& fOpen, const double& fHigh, const double& fLow, const double& fClose, const int& fVolume);

 

 

virtual int GetDataList(void) const

{

return m_DataList.size();

}

 

virtual int GetDataListSize(void) const

{

return m_DataList.size();

}

 

DOUBLELIST& GetValueList()

{

return m_ValueList;

}

 

virtual int GetValueListSize() const

{

return m_ValueList.size();

}

 

// Returns the int position of where to start drawing this indicator. For example, for an ema it is the

// period. Since before the period is defined, it we dont draw anything.

 

virtual int GetStartPos() const

{

return 0;

}

 

 

double& GetParam1()

{

return m_fParam1;

}

 

 

double& GetParam2()

{

return m_fParam2;

}

 

double& GetParam3()

{

return m_fParam3;

}

 

 

double findHigh(DOUBLELIST& list, int curpos, int periods);

double findLow(DOUBLELIST& list, int curpos, int periods);

double dataAt(DOUBLELIST& list, int curpos, int aposback);

 

// Set the Object as Updated When you have finished calculations

virtual void SetUpdated()

{

 

}

public:

// Calculated Data is stored in the Value List

DOUBLELIST m_ValueList;

// Input Data is stored in the Data List to Calculate the Series

DOUBLELIST m_DataList;

 

// The last calulated real time indicator tick from the market

double m_lastCalcValue;

 

// The last real time time from the market

double m_lastDataValue;

 

 

private:

ECustomType m_Type;

 

double m_fParam1;

double m_fParam2;

double m_fParam3;

int m_StartPos;

 

};

 

#endif

Share this post


Link to post
Share on other sites

You can get Visual C++ for free from here with which you should be able to open the sample project and create a dll.

 

Visual C++ 2008 Express Edition

 

If i was to expose the device context (this is the plot area in c++ speak), you could pretty draw anything you want, profiles, indicators, bars etc.

 

However the tricky bit is how to tell the custom indicator about the scaling in use on the device context (in order that you indicator can relate pixels to prices).

 

Im still thinking about that ! :)

Share this post


Link to post
Share on other sites

Well, i plumped to create call the user back to get the BarColor/Line Type/Style.

 

There is a callback with the devicecontext, which should enable elaborate programming using WinGDI plot libraries, making indicators like market profile possible (for experienced programmers).

 

See Version 2.0.7.7.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Topics

  • Posts

    • MNST Monster Beverage stock, top of range breakout above 60.45, from Stocks to Watch at https://stockconsultant.com/?MNST
    • ...hallucinates.... Student: “What if we gave the monkey LSD?” Guru: “The monkey already did LSD”
    • Question: To those that had/have cancer, what were the signs that made you think “something is not right here” to make you go see a doctor? Answer: So, 5/25/2018, I woke up, got ready for work, and as I walked to my car, I started gagging. Like something was stuck in my throat and I needed to clear it. And then it went away.   But 10 minutes after that, I was T-boned at 40mph on the driver side door. But what made me see a doctor was while my muscles felt better and bruises were going away, the gagging still continued, I started having fevers, my neck felt swollen, I was having such a hard time breathing, and I'd have random sharp pains in my chest, but not from where the seat belt saved me.   2 weeks after the accident, I finally see an urgent care doctor, who looks me over, tells me I'm fine, but luckily requests a neck X-ray. And I ask for a chest X-ray, which he rolls his eyes but let me have (most of my pain was in the neck, so I understand).   The very next day, he calls and says “So, that chest X-ray shows there's a 4 inch mass on your heart and lungs, and your lungs have been filling up with fluid, as well as in your pericardial (heart) wall. We need you to come in tomorrow.”   Turns out the big mass, due to the accident, caused my heart and lungs to tear and fill with fluid, the swollen neck and gagging was caused by 2 metastasized tumors, and the fevers and weight loss were symptoms. Stage 4b Hodgkin's Lymphoma.   But thankfully, we went very aggressive with chemo (and had a lot of bad side effects that don't normally happen to patients), and now I'm about 16 months cancer-free. Yay lucky X-rays! Rachel Jurina, Quora Source: https://www.quora.com/To-those-that-had-have-cancer-what-were-the-signs-that-made-you-think-something-is-not-right-here-to-make-you-go-see-a-doctor   Profits from free accurate cryptos signals: https://www.predictmag.com/  
    • As a man, the reality of life is the harshest part. I don’t mind looking older or becoming weaker over time; it’s nature.   Have you ever heard that the only people who will be loved unconditionally are women and children? Men will only be loved as long as they can provide until they are no longer needed. It doesn’t matter if you already did your best to get your kids to the best school or get the best things for them, if you stop before they’re done with it, there will be no thank you. The only thing they will remember is that they have to quit school at 15, ignoring all the previous 15 years of life you provided for them. The only people who will accept you, no matter what, are your parents. But in this situation, you might be that ungrateful child.   EDIT: Wow, I didn’t think this would get so much attention.   For those who disagree, I can only say that everyone has their problem. If you don’t get the chance to face such a thing, be grateful. Remember, sometimes what you throw in the garbage is something that someone wishes ever to have.” – ElZee, Quora   Profits from free accurate cryptos signals: https://www.predictmag.com/    
    • The good thing i had noticed so far is that the traderpot value is also on the rise..
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.