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How to Create DLL for Metastock: A Complete Guide for Beginners
Metastock is a popular software for technical analysis and trading. It allows users to create and test various trading strategies, indicators, and systems. However, sometimes the built-in functions and features of Metastock are not enough to meet the needs of advanced users. In such cases, users can create their own custom functions and features using DLL files.
how to create dll for metastock
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DLL stands for Dynamic Link Library. It is a file that contains code and data that can be used by multiple programs. By creating a DLL file for Metastock, users can extend the functionality and flexibility of the software. For example, users can create new indicators, functions, explorations, systems, or experts using DLL files.
Creating a DLL file for Metastock is not a difficult task, but it requires some basic knowledge of programming and Metastock. In this article, we will show you how to create a DLL file for Metastock in 5 easy steps. We will also provide some tips and tricks to make your DLL file more effective and efficient.
Step 1: Choose a Programming Language and an IDE
The first step to create a DLL file for Metastock is to choose a programming language and an integrated development environment (IDE). A programming language is a set of rules and syntax that allows you to write code and instructions for the computer. An IDE is a software that helps you write, edit, compile, debug, and run your code.
There are many programming languages and IDEs available, but not all of them are compatible with Metastock. According to the official documentation of Metastock, the recommended programming languages for creating DLL files are C++, C#, or Visual Basic.NET. The recommended IDEs are Visual Studio or Visual Studio Code.
You can choose any of these programming languages and IDEs according to your preference and experience. However, for this article, we will use C++ as the programming language and Visual Studio as the IDE. You can download Visual Studio from https://visualstudio.microsoft.com/.
Step 2: Create a New Project and Add a Class
The second step to create a DLL file for Metastock is to create a new project and add a class. A project is a collection of files and settings that define your application. A class is a blueprint that defines the properties and methods of an object.
To create a new project in Visual Studio, follow these steps:
Open Visual Studio and click on File -> New -> Project.
In the Create a new project window, select C++ as the language and Windows as the platform.
In the list of templates, select Dynamic-link Library (DLL).
In the Configure your new project window, enter a name for your project (for example, MyDLL) and a location where you want to save it.
Click on Create.
To add a class in Visual Studio, follow these steps:
In the Solution Explorer window, right-click on your project name (for example, MyDLL) and select Add -> Class.
In the Add Class window, select C++ as the language and C++ Class as the type.
In the Name field, enter a name for your class (for example, MyFunction).
Click on Add.
Step 3: Write the Code for Your Function
The third step to create a DLL file for Metastock is to write the code for your function. A function is a block of code that performs a specific task. You can write any function that you want to use in Metastock, as long as it follows some rules and conventions.
According to the official documentation of Metastock, there are two types of functions that you can create using DLL files: indicator functions and system test functions. Indicator functions are used to calculate values based on price data or other indicators. System test functions are used to evaluate trading signals based on price data or other indicators.
For this article, we will create an indicator function that calculates the simple moving average (SMA) of an input array. The SMA is one of the most basic indicators in technical analysis. It calculates the average price of an asset over a given period of time.
To write the code for your function in Visual Studio, follow these steps:
In the Solution Explorer window, double-click on your class header file (for example, MyFunction.h).
In the code editor window, add the following line at the beginning of the file:
```cpp
#include \"MSFunctionInterface.h\"
```
This line includes the header file that contains the definitions and declarations of the Metastock function interface.
In the code editor window, add the following line inside the public section of your class declaration:
```cpp
MSFunctionInterface* m_pMSFunctionInterface;
```
This line declares a pointer variable that will store the address of an object of type MSFunctionInterface. This object will allow you to access various methods and properties related to Metastock.
In the code editor window, add the following line inside the public section of your class declaration:
```cpp
MyFunction(MSFunctionInterface* pMSFunctionInterface);
```
This line declares a constructor for your class that takes an argument of type MSFunctionInterface*. A constructor is a special method that is called when an object of your class is created. The argument will be used to initialize your pointer variable declared in step 3.
In the code editor window, add the following line inside the public section of your class declaration:
```cpp
double CalculateSMA(double* inputArray,int arraySize,int period);
```
This line declares a method for your class that takes three arguments: inputArray (a pointer to an array of double values), arraySize (an integer value that represents the size of the array), and period (an integer value that represents the number of bars used to calculate the SMA). The method returns a double value that represents the SMA value calculated from the input array.
In the Solution Explorer window, double-click on your class source file (for example, MyFunction.cpp).
In
the code editor window,
add
the following
code
at
the end
of
the file:
```cpp
//Constructor definition
MyFunction::MyFunction(MSFunctionInterface* pMSFunctionInterface)
//Assigning argument value to pointer variable
m_pMSFunctionInterface = pMSFunctionInterface;
//Method definition
double MyFunction::CalculateSMA(double* inputArray,int arraySize,int period)
//Declaring variables
double sum = 0; //To store sum of values
double sma = 0; //To store SMA value
//Checking if array size is greater than or equal to period
if(arraySize >= period)
//Looping through last period values in array
for(int i = arraySize - period; i < arraySize; i++)
//Adding value to sum
sum += inputArray[i];
//Calculating SMA by dividing sum by period
sma = sum / period;
else //If array size is less than period
//Setting SMA value to zero
sma = 0;
//Returning SMA value
return sma;
```
This code defines
the constructor
and
the method
that
were declared
in
the header file.
The constructor assigns
the argument value
to
the pointer variable.
The method calculates
the SMA value
from
the input array
by
using
a simple formula.
The method also checks
if
the array size
is
greater than or equal
to
the period,
and
returns zero
if
not.
Step 4: Export Your Function
The fourth step to create a DLL file for Metastock is to export your function. Exporting your function means making it available for other programs or applications to use. In this case,
you need
to export your function so that Metastock can access it.
To export your function in Visual Studio,
follow these steps:
In
the Solution Explorer window,
right-click on your project name (for example,
MyDLL)
and select Properties.
In
the Property Pages window,
select Configuration Properties -> Linker -> Input from
the left pane.
In
the right pane,
find Additional Dependencies
and click on Edit.
In
the Additional Dependencies dialog box,
add MSFunctionInterface.lib at
the end.
Click OK.
This step adds MSFunctionInterface.lib as an additional dependency for linking.
MSFunctionInterface.lib is a library file that contains information about MSFunctionInterface.
You can find this file in C:\\Program Files\\Metastock\\Custom Functions\\SDK\\lib folder.
In
the Property Pages window,
select Configuration Properties -> Linker -> General from
the left pane.
In
the
In
the Solution Explorer window,
right-click on your project name (for example,
MyDLL)
and select Add -> New Item.
In
the Add New Item window,
select C++ as the language and Code as the type.
In
the list of templates,
select Module-Definition File (.def).
In
the Name field,
enter a name for your file (for example,
MyDLL.def).
Click Add.
In
the code editor window,
add the following line at
the beginning of the file:
```cpp
LIBRARY MyDLL
```
This line specifies the name of your DLL file.
In
the code editor window,
add the following line below the previous line:
```cpp
EXPORTS
```
This line indicates the start of the list of exported functions.
In
the code editor window,
add the following line below the previous line:
```cpp
CreateMyFunction
```
This line exports a function named CreateMyFunction.
This function will be used by Metastock to create an object of your class and access your method.
You will write this function in the next step.
Step 5: Write the CreateMyFunction Function
The fifth and final step to create a DLL file for Metastock is to write the CreateMyFunction function. This function is a special function that Metastock will call to create an object of your class and access your method. This function must follow some rules and conventions specified by Metastock.
To write the CreateMyFunction function in Visual Studio, follow these steps:
In
the Solution Explorer window,
right-click on your project name (for example,
MyDLL)
and select Add -> Class.
In
the Add Class window,
select C++ as the language and C++ Class as the type.
In
the Name field,
enter a name for your class (for example,
MSFunction).
Click on Add.
In
the code editor window,
delete all the code in your class header file (for example,
MSFunction.h) and replace it with the following code:
```cpp
#pragma once
#include \"MSFunctionInterface.h\"
class MSFunction : public MSFunctionInterface
public:
MSFunction();
MSFunction();
virtual void* CreateObject(MSFunctionInterface* pMSFunctionInterface);
;
```
This code declares a class named MSFunction that inherits from MSFunctionInterface. This class has a constructor, a destructor, and a virtual method named CreateObject. This method takes an argument of type MSFunctionInterface* and returns a pointer to void. This method will be used to create an object of your class (for example, MyFunction) and return its address.
In
the code editor window,
delete all the code in your class source file (for example,
MSFunction.cpp) and replace it with the following code:
```cpp
#include \"MSFunction.h\"
#include \"MyFunction.h\"
//Constructor definition
MSFunction::MSFunction()
//Destructor definition
MSFunction::MSFunction()
//Method definition
void* MSFunction::CreateObject(MSFunctionInterface* pMSFunctionInterface)
//Creating an object of MyFunction class and passing pMSFunctionInterface as argument
MyFunction* pMyFunction = new MyFunction(pMSFunctionInterface);
//Returning address of object as pointer to void
return (void*)pMyFunction;
```
This code defines the constructor, the destructor, and the CreateObject method. The constructor and the destructor are empty because they do not need to do anything. The CreateObject method creates an object of MyFunction class and passes pMSFunctionInterface as an argument. Then it returns the address of the object as a pointer to void.
In
the Solution Explorer window,
right-click on your project name (for example,
MyDLL)
and select Add -> New Item.
In
the Add New Item window,
select C++ as the language and Code as the type.
In
the list of templates,
select C++ File (.cpp).
In
the Name field,
enter a name for your file (for example,
CreateMyFunction.cpp).
Click Add.
In
the code editor window,
add the following line at
the beginning of the file:
```cpp
#include \"MSFunction.h\"
```
This line includes the header file that contains the declaration of MSFunction class.
In
the code editor window,
add the following line below the previous line:
```cpp
extern \"C\" __declspec(dllexport) MSFunctionInterface* __stdcall CreateMyFunction()
```
This line declares a function named CreateMyFunction that has external linkage, is exported from DLL, returns a pointer to MSFunctionInterface, and uses stdcall calling convention. These are some of the rules and conventions that Metastock requires for this function.
In
the code editor window,
add the following code below the previous line:
```cpp
//Creating an object of MSFunction class
MSFunction* pMSFunction = new MSFunction();
//Returning address of object as pointer to MSFunctionInterface
return (MSFunctionInterface*)pMSFunction;
```
This code defines the function body. The function creates an object of MSFunction class and returns its address as a pointer to MSFunctionInterface. This pointer will be used by Metastock to call the CreateObject method of MSFunction class, which in turn will create an object of MyFunction class and return its address.
Conclusion
Metastock is a powerful software for technical analysis and trading. It allows users to create and test various trading strategies, indicators, and systems. However, sometimes the built-in functions and features of Metastock are not enough to meet the needs of advanced users. In such cases, users can create their own custom functions and features using DLL files.
DLL stands for Dynamic Link Library. It is a file that contains code and data that can be used by multiple programs. By creating a DLL file for Metastock, users can extend the functionality and flexibility of the software. For example, users can create new indicators, functions, explorations, systems, or experts using DLL files.
Creating a DLL file for Metastock is not a difficult task, but it requires some basic knowledge of programming and Metastock. In this article, we have shown you how to create a DLL file for Metastock in 5 easy steps. We have also provided some tips and tricks to make your DLL file more effective and efficient.
The steps are as follows:
Choose a programming language and an IDE.
Create a new project and add a class.
Write the code for your function.
Export your function.
Write the CreateMyFunction function.
By following these steps, you can create a DLL file for Metastock that can perform any task that you want. You can also use your DLL file in Metastock and see the results of your function. You can also share your DLL file with other users who might find it useful.
Creating a DLL file for Metastock is a great way to enhance your skills and knowledge in programming and technical analysis. It is also a fun and rewarding experience that can help you achieve your trading goals. We hope that this article has helped you learn how to create a DLL file for Metastock. Happy coding and happy trading! d282676c82
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