Added custom action to copy MtApi.ex4 file to MetaTrader user folder during installation

MtApiSetupActions/CustomAction.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup useLegacyV2RuntimeActivationPolicy="true">
+
+        <!--
+          Use supportedRuntime tags to explicitly specify the version(s) of the .NET Framework runtime that
+          the custom action should run on. If no versions are specified, the chosen version of the runtime
+          will be the "best" match to what Microsoft.Deployment.WindowsInstaller.dll was built against.
+
+          WARNING: leaving the version unspecified is dangerous as it introduces a risk of compatibility
+          problems with future versions of the .NET Framework runtime. It is highly recommended that you specify
+          only the version(s) of the .NET Framework runtime that you have tested against.
+
+          Note for .NET Framework v3.0 and v3.5, the runtime version is still v2.0.
+
+          In order to enable .NET Framework version 2.0 runtime activation policy, which is to load all assemblies 
+          by using the latest supported runtime, @useLegacyV2RuntimeActivationPolicy="true".
+
+          For more information, see http://msdn.microsoft.com/en-us/library/bbx34a2h.aspx
+        -->
+
+        <supportedRuntime version="v4.0" />
+        <supportedRuntime version="v2.0.50727"/>
+
+    </startup>
+
+    <!--
+      Add additional configuration settings here. For more information on application config files,
+      see http://msdn.microsoft.com/en-us/library/kza1yk3a.aspx
+    -->
+
+</configuration>

MtApiSetupActions/CustomAction.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Windows.Forms;
+using Microsoft.Deployment.WindowsInstaller;
+
+namespace MtApiSetupActions
+{
+    public class CustomActions
+    {
+        private const string MtApiFile = "MtApi.ex4";
+        private const string TerminalFolder = @"\MetaQuotes\Terminal";
+        private const string Mql4Folder = "MQL4";
+        private const string InstalledExpertFolderProperty = "ExpertFolder";
+        private const string DestinationExpertFolder = @"\Experts\";
+
+        [CustomAction]
+        public static ActionResult InstallEx4File(Session session)
+        {
+            session.Log("Begin action InstallEx4File...");
+
+            var appDataFolder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
+
+            var metaquotesFolder = appDataFolder + TerminalFolder;
+
+            if (Directory.Exists(metaquotesFolder))
+            {
+                var foldersFound = Directory.GetDirectories(metaquotesFolder, Mql4Folder, SearchOption.AllDirectories);
+                Console.WriteLine(string.Join("\n", foldersFound));
+
+                foreach (var folder in foldersFound)
+                {
+                    var srcFile = session[InstalledExpertFolderProperty] + MtApiFile;
+                    var destFile = folder + DestinationExpertFolder + MtApiFile;
+
+                    session.Log(string.Format("Try to copy from {0} to {1}", srcFile, destFile));
+
+                    try
+                    {
+                        File.Copy(srcFile, destFile, true);
+                    }
+                    catch (Exception e)
+                    {
+                        session.Log(string.Format("Failed to copy MtApi4.ex4. {0}", e.Message));
+                    }
+
+                    session.Log(string.Format("MtApi.ex4 has been coppied to {0}", destFile));
+                }
+            }
+            else
+            {
+                session.Log("MetaTrader is not installed");
+            }
+
+            return ActionResult.Success;
+        }
+    }
+}

MtApiSetupActions/MtApiSetupActions.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{10800F37-F71B-4818-8351-8CF744295F80}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>MtApiSetupActions</RootNamespace>
+    <AssemblyName>MtApiSetupActions</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <WixCATargetsPath Condition=" '$(WixCATargetsPath)' == '' ">$(MSBuildExtensionsPath)\Microsoft\WiX\v3.x\Wix.CA.targets</WixCATargetsPath>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.Deployment.WindowsInstaller">
+      <Private>True</Private>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="CustomAction.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Content Include="CustomAction.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(WixCATargetsPath)" />
+</Project>

MtApiSetupActions/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("MtApiSetupActions")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("MtApiSetupActions")]
+[assembly: AssemblyCopyright("Copyright ©  2016")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("c0ee9849-c0cd-4f67-8423-fe334565b863")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]