How To Install License

1. Download and Install the wininet.mqh Library

• Click here to download the wininet.mqh file.
• Place the downloaded wininet.mqh file in the Include folder. ‘Path: MQL5/Include/’
• Including the wininet.mqh in your indicator mq4 file.

#include <wininet.mqh>

2. License Variables

• These variables store the necessary information for the license check.
• Update the name variable to match the name of your indicator exactly as it is registered in the licensing system. Ensure that the platform is set to “MT5” and type is set to “Indicator”.

// License variables
int accountNumber = (int)AccountInfoInteger(ACCOUNT_LOGIN);
string platform = "MT5";            // Set platform to "MT5"
string type = "Indicator";          // Set type to "Indicator"
string name = "Your Indicator Name"; //Your Indicator Name, must be exact with the one in "Licencing" ExpertAdvisorLicense's dashboard

3. Custom Indicator Initialization

• No changes needed here unless you want to modify the interval at which the license is rechecked. The timer is currently set to 300 seconds (5 minutes). Then place the code into your indicator’s mq5 code.

int OnInit()
  {
    
   // Initial license check on attachment
   if(!CheckLicense())
   {
      ChartIndicatorDelete(0, 0, name);
      return INIT_FAILED; // Fail to initialize if the license is not valid
   }
   
   // Set timer to check the license every x seconds. Ex: 5 minutes (300 seconds)
   EventSetTimer(300);
   
   Print("License Active");
   
   
   return(INIT_SUCCEEDED);
  }

4. Indicator Deinitialization

• No changes are necessary here. Place the code into your indicator’s mq5 code.

void OnDeinit(const int reason)
  {
   // Remove the timer when the indicator is removed
   EventKillTimer();
  }

5. Timer Function

• No changes are needed here. This ensures that the license remains valid while the indicator is running. You may directly place it into your Indicator’s mq5 code.

void OnTimer()
{
    // Recheck the license
    if(!CheckLicense())
    {
        ChartIndicatorDelete(0, 0, name);
    }
}

6. License Check Function

• No changes are needed here. You may directly place it into your Indicator’s mq4 code.

bool CheckLicense()
{
    Print(__FUNCTION__, " > Checking license...");

    // URL and Path Separation
    string domain = "expertadvisorlicense.com";
    string path = "/EALicense.php";

    // Prepare POST data
    string postData = "account_no=" + IntegerToString(accountNumber) +
                      "&platform=" + platform +
                      "&type=" + type +
                      "&name=" + name;

    string response;

    // Use the PostHTTPRequest function to send data
    bool success = PostHTTPRequest(domain, path, postData, response, SSL_ON);

    if (!success)
    {
        Print(__FUNCTION__, " > Failed to send POST request.");
        Print("Failed to check license. Please contact the owner.");
        ChartIndicatorDelete(0, 0, name);
        return false;
    }

    //Print(__FUNCTION__, " > Server response text: ", response);

    // Check if "Account Valid" is present in the response
    if (StringFind(response, "Account Valid") == -1)
    {
        Alert("Contact Indicator Owner");
        return false; // License is not valid
    }

    return true; // License is valid
}

7. You are done!

• Attach the Indicator to a chart in MetaTrader 5 to ensure that it works correctly and verifies the license.

Full-view of the MT5 Indicator License Code

//+------------------------------------------------------------------+
//|                                        MT5 Indicator License.mq5 |
//|                             Copyright 2024, ExpertAdvisorLicense |
//|                                 https://expertadvisorlicense.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2024, ExpertAdvisorLicense"
#property link      "https://expertadvisorlicense.com/"
#property indicator_chart_window

#include <wininet.mqh>

// License variables
int accountNumber = (int)AccountInfoInteger(ACCOUNT_LOGIN);
string platform = "MT5";            // Set platform to "MT5"
string type = "Indicator";          // Set type to "Indicator"
string name = "Your Indicator Name"; //Your Indicator Name, must be exact with the one in "Licencing" ExpertAdvisorLicense's dashboard
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
    
   // Initial license check on attachment
   if(!CheckLicense())
   {
      ChartIndicatorDelete(0, 0, name);
      return INIT_FAILED; // Fail to initialize if the license is not valid
   }
   
   // Set timer to check the license every x seconds. Ex: 5 minutes (300 seconds)
   EventSetTimer(300);
   
   Print("License Active");
   
   
   return(INIT_SUCCEEDED);
  }
  

//+------------------------------------------------------------------+
//| Indicator deinitialization function                              |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   // Remove the timer when the indicator is removed
   EventKillTimer();
  }
//+------------------------------------------------------------------+
//| Timer function to check license every 5 minutes                  |
//+------------------------------------------------------------------+
void OnTimer()
{
    // Recheck the license
    if(!CheckLicense())
    {
        ChartIndicatorDelete(0, 0, name);
    }
}


//+------------------------------------------------------------------+
//| Function to check the license using Wininet                      |
//+------------------------------------------------------------------+
bool CheckLicense()
{
    Print(__FUNCTION__, " > Checking license...");

    // URL and Path Separation
    string domain = "expertadvisorlicense.com";
    string path = "/EALicense.php";

    // Prepare POST data
    string postData = "account_no=" + IntegerToString(accountNumber) +
                      "&platform=" + platform +
                      "&type=" + type +
                      "&name=" + name;

    string response;

    // Use the PostHTTPRequest function to send data
    bool success = PostHTTPRequest(domain, path, postData, response, SSL_ON);

    if (!success)
    {
        Print(__FUNCTION__, " > Failed to send POST request.");
        Print("Failed to check license. Please contact the owner.");
        ChartIndicatorDelete(0, 0, name);
        return false;
    }

    //Print(__FUNCTION__, " > Server response text: ", response);

    // Check if "Account Valid" is present in the response
    if (StringFind(response, "Account Valid") == -1)
    {
        Alert("Contact Indicator Owner");
        return false; // License is not valid
    }

    return true; // License is valid
}


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const int begin,
                const double &price[])
  {
   return(rates_total);
  }
//+------------------------------------------------------------------+