What's new in MetaTrader 5

The history of updates of the desktop, mobile and web platforms

20 December 2017
MetaTrader 5 Build 1730: projects in MetaEditor and Synthetic financial instruments

End of Support for Older Terminal Versions!

Support for older versions of desktop and mobile terminals will end upon the release of the new platform version:

  • Client Terminal: versions below 730, November 23, 2012
  • Mobile Terminal for iPhone: versions below 1171, November 11, 2015
  • Mobile Terminal for Android: versions below 1334, August 5, 2016

Unsupported terminal builds will not be able to connect to new server versions. We strongly recommend that you update your terminals in advance.

MQL5 Storage Operation Protocol Changes

To support new shared projects, we have updated the protocol of operation with the MQL5 Storage. Therefore, you will need to perform a checkout of all data from the storage after the platform update. Data stored at the MQL5 Storage will not be lost or affected during the update.

Before updating the platform to the new version, we recommend that you perform the Commit operation to send all local changes to the MQL5 Storage.


  1. Now, the trading platform allows creating synthetic financial instruments, i.e. symbols based on one or more existing instruments. The user should set the formula for calculating quotes, after which the platform will generate ticks of the synthetic instrument in real time, and also will create its minute history.

    How It Works

    • You create a synthetic instrument and set the formula for price calculation.
    • The platform calculates ticks at a frequency of 10 times per second, provided that the price of at least one of the instruments used in the formula has changed.
    • The platform also calculates the history of one-minute bars (for the last two months) based on minute bars of instruments used in its formula. All new bars (current and subsequent ones) are built in real time based on the generated ticks of the synthetic instrument.

    For example, you can create an instrument showing the dollar index (USDX). It uses the below formula:

    50.14348112 * pow(ask(EURUSD),-0.576) * pow(USDJPY,0.136) * pow(ask(GBPUSD),-0.119) * pow(USDCAD,0.091) * pow(USDSEK,0.042) * pow(USDCHF,0.036)

    Note: the USDEUR and USDGBP pairs are used in the source dollar index formula. Since only reverse pairs are available in the platform, a negative power and Ask instead of Bid are used in the synthetic symbol formula.

    The platform will calculate in real time the price of the new instrument based on the quotes of the other six symbols provided by your broker. The price changes will be visualized in the Market Watch window and on the chart:

    Create a new custom symbol, open its specification and enter the formula:

    For convenience, the formula editor shows a list of possible options as you type the names of symbols and functions.

    Calculation of ticks and one-minute bars of a synthetic instrument starts when this instrument is added to the Market Watch. Also, all symbols required for the synthetic price calculation are automatically added to the Market Watch. An entry about the calculation start will be added to the platform journal: Synthetic Symbol USDX: processing started.

    • Calculation of a synthetic instrument stops after it is removed from the Market Watch.
    • Symbols that are currently used for calculating synthetic symbol prices cannot be hidden from the Market Watch.

    Real-Time Calculation of Quotes

    Every 100 ms (i.e. ten times per second) the prices of symbols used in calculation are checked. If at least one of them has changed, the price of the synthetic symbol is calculated and a new tick is generated. Calculation is performed in parallel in three threads for Bid, Ask and Last prices. For example, if the calculation formula is EURUSD*GBPUSD, the price of the synthetic symbol will be calculated as follows:

    • Bid = bid(EURUSD)*bid(GBPUSD)
    • Ask = ask(EURUSD)*ask(GBPUSD)
    • Last = last(EURUSD)*last(GBPUSD)

    The availability of changes is checked separately for each price. For example, if only the Bid price of a source instrument has changed, only the appropriate price of a synthetic instrument will be calculated.

    Creating a History of Minute Bars

    In addition to collecting ticks in real time, the platform creates a minute history of the synthetic instrument. It enables traders to view synthetic symbol charts similar to normal ones, as well as to conduct technical analysis using objects and indicators.

    When a trader adds a synthetic instrument to the Market Watch, the platform checks whether its calculated minute history exists. If it does not exist, the history for the last 60 days will be created, which includes about 50,000 bars. If a lower value is specified in the 'Max. bars in chart' parameter in platform settings, the appropriate restriction will apply.

    If some of bars within this period have already been create, the platform will additionally generate new bars. A deeper history is created if the user tries to view an older time period on the chart (by scrolling it back or accessing it from an MQL5 program).

    The history of one-minute bars of a synthetic instrument is calculated based one one-minute bars (not ticks) of instruments used in its formula. For example, to calculate the Open price of a 1-minute bar of a synthetic symbol, the platform uses the Open prices of symbols used in its formula. High, Low and Close prices are calculated in a similar way.

    If the required bar is not available for any of the instruments, the platform will use the Close price of the previous bar. For example, three instruments are used: EURUSD, USDJPY and GBPUSD. If in the calculation of a bar corresponding to 12:00 the required bar of USDJPY is not available, the following prices will be used for calculation:

    • Open: EURUSD Open 12:00, USDJPY Close 11:59, GBPUSD Open 12:00
    • High: EURUSD High 12:00, USDJPY Close 11:59, GBPUSD High 12:00
    • Low: EURUSD Low 12:00, USDJPY Close 11:59, GBPUSD Low 12:00
    • Close: EURUSD Close 12:00, USDJPY Close 11:59, GBPUSD Close 12:00

    If the minute bar is not available for all of the instruments used in the formula, the appropriate minute bar of the synthetic instrument will not be calculated.

    Drawing New Minute Bars

    All new bars (current and subsequent ones) of the synthetic instrument are created based on generated ticks. The price used for building the bars depends on the value of the Chart Mode parameter in the specification:

    What Operations Can Be Used in the Symbol Formula

    Price data and some properties of existing symbols provided by the broker can be used for calculating synthetic prices. Specify the following:

    • Symbol name — depending on the synthetic price to be calculated, the Bid, Ask or Last of the specified instrument will be used. For example, if EURUSD*GBPUSD is specified, Bid is calculated as bid(EURUSD)*bid(GBPUSD), and Ask = ask(EURUSD)*ask(GBPUSD).
    • bid(symbol name) — the bid price of the specified symbol will be forcedly used for calculating the Bid price of the synthetic instrument. This option is similar to the previous one (where the price type is not specified).
    • ask(symbol name) — the Ask price of the specified symbol will be used for calculating the Bid price of the synthetic instrument. Bid price of the specified instrument will be used for calculating Ask. The Last price of the specified symbol will be used for calculating Last. If ask(EURUSD)*GBPUSD is specified, the following calculation will be used:
    • Вid = ask(EURUSD)*bid(GBPUSD)
    • Ask = bid(EURUSD)*ask(GBPUSD)
    • Last = last(EURUSD)*last(GBPUSD)
    • last(symbol name) — the Last price of the specified symbol will be used in the calculation of all prices of the synthetic instrument (Bid, Ask and Last). If last(EURUSD)*GBPUSD is specified, the following calculation will be used:
    • Вid = last(EURUSD)*bid(GBPUSD)
    • Ask = last(EURUSD)*ask(GBPUSD)
    • Last = last(EURUSD)*last(GBPUSD)
    • volume(symbol name) — the tick volume of the specified instrument will be used in the formula. Make sure that volume information is provided by the broker for this symbol.
    • point(symbol name) — the minimum price change of the specified instrument will be used in calculations.
    • digits(symbol name) — the number of decimal places in the specified symbol price will be used in the formula.

    If a symbol has a complex name (contains hyphens, dots, etc.), it must be written in quotation marks. Example: "RTS-6.17".

    The following arithmetic operations can be used in the formula: addition (+), subtraction (-), multiplication (*), devision (/) and remainder of division (%). For example, EURUSD+GBPUSD means that the price is calculated as the sum of EURUSD and GBPUSD prices. Also you can use the unary minus to change the sign, for example: -10*EURUSD.

    Mind the calculation priority of arithmetic operations:

    • The operations of multiplication, division and remainder are performed first; then addition and subtraction operations are performed.
    • The operations are performed from left to right. If the formula uses several operations that have the same priority (for example, multiplication and division), the operation on the left will be performed first.
    • You can use brackets ( and ) to change the priority of operations. Operations in brackets have the highest priority in the calculation. The left-to-right principle also applies for them: operations in brackets on the left are calculated first.

    You can use constants in the formula:

    • Numerical (integer and float). Example: EURUSD*2+GBPUSD*0.7.
    • Symbol properties _Digits and _Point. They add to the formula appropriate properties of the custom symbol from the specification. _Digits means the number of decimal places in the instrument price; _Point means the smallest change in the symbol price.

    You can also use in the formula all mathematical functions supported in MQL5, except for MathSrand, MathRand and MathIsValidNumber: Only short names are used for all functions, such as fabs(), acos(), asin() etc.

  2. A new option has been implemented, allowing to add quotes of custom instruments in real time. Now, it is possible to develop an MQL5 Expert Advisor that would be feeding quotes of the specified custom symbol. The CustomTicksAdd function is used for that.
    int  CustomTicksAdd(
       const string           symbol,       // Symbol name
       const MqlTick&         ticks[]       // The array with tick data that should be applied to the custom symbol

    The CustomTicksAdd function allows feeding quotes as if these quotes were received from a broker's server. Data is sent to the Market Watch window instead of being directly written to the tick database. Then, the terminal saves ticks from the Market Watch to the database. If a large volume of data is passed in one call, the function behavior changes, in order to save resources. If more than 256 ticks are transmitted, data is divided into two parts. A larger part is recorded directly to the tick database (similar to CustomTicksReplace). The second part consisting of the last 128 ticks is sent to the Market Watch, from where the terminal saves the ticks to a database.

  3. The Market Watch window now additionally features the High and Low prices. These columns are hidden by default. They can be enabled using the context menu:

    If a symbol chart is constructed using Bid prices (as per specification settings), Bid High and Bid Low prices are shown for this symbol. If a symbol chart is constructed using Last prices, Last High and Last Low prices are shown for this symbol.

    If Market Watch contains at least one symbol whose chart is drawn based on Last prices, the Last column is automatically enabled in addition to High/Low.

  4. Now it is possible to edit the tick history of custom financial instruments. Click 'Symbols' in the Market Watch context menu, select a custom symbol and request the required data interval in the Ticks tab.

    • Double-tap to change the value.
    • Use the context menu to add or delete entries.
    • If you need to delete multiple bars/ticks at once, select them with the mouse, holding down Shift or Ctrl+Shift.

    For convenience, modified entries are highlighted as follows:

    • Green background indicates a modified entry
    • Gray background means a deleted entry
    • Yellow background shows an added entry

    To save the changes, click "Apply Changes" at the bottom of the window.

  5. Added display of preliminary accounts in the Navigator tree.

    Traders can send a request to a broker to open a real account straight from desktop terminals. The user needs to fill in a simple request form with contact details. A special preliminary account is created for the trader after that. Then, the broker contacts the trader to formalize relations and turn the real account from the preliminary one.

  6. Added display of time in millisecond in the Quotes window.

  7. Scanning of available servers in the new account opening dialog has become faster.
  8. Fixed display of the Trendline graphics object with the Ray Left and Ray Right options enabled.
  9. Optimized operation with a large amount of internal emails (hundreds of thousands).
  10. Optimized terminal operation with a large amount of trading instruments (50,000 or more).
  11. Added optimization of the tick history of custom financial instruments executed after editing history.


  1. Full-featured projects are now available in MetaEditor. The program development process has become more convenient.

    Now the main MQ5 program file does not appear as the project. The project is a separate "MQPROJ" file, which stores program settings, compilation parameters and information about all used files. Main project settings can be accessed from a separate dialog box, so there is no need to specify them in the source code via #property now.

    A separate tab in the Navigator is provided for work convenience within the project. All files, such as include, resource, header and other files are arranged into categories on this tab. All files are automatically added to the project navigator. For example, if you include a new MQH file, it will automatically appear in the "Dependencies" section of the navigator.

    Support for new projects has also been implemented in the updated MQL5 Storage online repository. Now, it has become much more convenient to develop large projects through collaboration with other members of the MQL5.community.

    New Shared Projects section is provided for group projects. A project created in this section is immediately sent to the storage: you can grant permissions to other users and start collaboration right away.

    When you compile a project in Shared Projects, an executable EX5 file is automatically copied to the local Experts, Indicators or Scripts directory depending on the program type. You can easily launch the program on a chart without having to copy files manually.

    What's New in the MQL5 Storage Operation

    To implement support for new shared projects, we have modified the protocol of operation with the MQL5 Storage. Therefore, you will need to perform a checkout of all data from the storage after the platform update. Data stored at the MQL5 storage will not be lost or affected during the update.

    Before updating the platform to the new version, we recommend that you perform the Commit operation to send all local changes to the MQL5 Storage.

    The 'Checkout from Storage' command is unavailable now. Instead, the 'Activate MQL5 Storage' and 'Update from Storage' commands are used to receive data:

    • If you haven't used the MQL5 Storage in the current MetaEditor instance, click 'Activate MQL5 Storage' in the context menu of the Navigator window. All catalogs and files available in your storage will be uploaded to your local computer.
    • If you are already working with the storage, click 'Update files from Storage' in the context menu of a certain project or the root MQL5 element in the Navigator window to receive data from the storage.

    New Projects: Examples of Creation and Operation Details

    A new project entity has been added in MetaEditor. A project is an mqproj file that stores common program properties and information about all used files. Now, program properties can be conveniently managed from a separate MetaEditor dialog instead of manual modification of properties in the source code (using #property directives).

    If you have available code, you can easily test new projects by using the 'New Project from Source' command.

    In the directory where the selected file is located, a new project file with the same name and the mqproj extension will be created. The main program properties specified in the source code via #property will be automatically added to the project, including the name, copyright, version, link to the developer's site and program description.

    The set of program properties in the project file is given a higher priority, than properties specified in the program code. If properties are specified both in the project and in the source file, properties from the project will be used.

    Two new options for compiling MQL5 programs have been added to project properties:

    • Enable additional optimization: applications with the optimization disabled are compiled faster, but execute more slowly.
    • Check floating point dividers: applications with the check disabled work a little faster, because the zero divide error is not checked during code execution.

    To work with projects, use a separate Project tab in the Navigator window. All files used in a project are displayed on this tab in a convenient form. When a project is generated from a source file, all used include files (specified using the #include directory in the main MQ5 file and in its include files) are automatically added to the Dependencies section.

    When a new include file is added to the source code, it also appears in the project Navigator. Used header files are added to the Headers section; images, sounds and other MQL5 programs used in the project as resource are added to the Resources section. MQ5 files with the source code are displayed in the Sources section. In the 'Settings and files' section, you can add other files, such as set files for testing and chart templates.

    Use context menu commands to add existing files to a project or to delete files from it. Be careful when deleting files, since you can remove a file from the project (remove the binding) or completely delete it from the hard disk:

    Creation of a new project is as easy as the creation of a normal MQL5 program. Click 'New Project', select the type of new program and specify properties (such as name, event handlers, etc) in the MQL5 Wizard.

    To obtain an executable EX5 file, you can open the project and press F7 (the compilation command) or open the main MQ5 file of the program and compile it.

    Shared Projects in MQL5 Storage: Operation Details

    Shared projects are managed from a separate Shared Projects section. If you have not connected the storage yet, execute the 'Activate MQL5 Storage' command from the context menu of the desired folder. MetaEditor will check if your storage contains any saved data and if there are any share projects available to you. All available data will be retrieved from the storage and uploaded to your computer (the checkout operation). Available group projects appear in the Shared Projects section. To retrieve the projects, execute "Checkout from Storage" in the context menu.

    To create a new group project, select the Shared Projects folder and click "New Project":

    Then complete standard MQL5 steps: set the type, name and properties of the desired program. For group projects, you should use clear and understandable names, so that other participants could easily find them. Only Latin letters and numbers without spaces can be used in project names.

    A created object is immediately added to the MQL5 Storage. Standard Library files used in the project are not added to the storage, and you can add them manually.

    To allow other participants to work with the project, open its properties. From here you can grant permissions to selected users by specifying their MQL5.community login, as well as set common parameters for the group work:

    • Private project
    • Free to join project
    • Join by request project

    When you compile a group project, the executable EX5 file is automatically copied to the local Experts, Indicators or Scripts directory depending on the program type. It allows you to instantly run the program in the terminal without having to copy it manually to the proper directory.

    Public Projects in MQL5 Storage: Participation in Development

    As mentioned above, each group project in MQL5 Storage has publicity settings: the project can be private or open to other users. Now, all projects you can freely join are displayed in the separate "Public Projects" tab.

    Everyone can find an exciting project and take part in its development. Simply click Join and receive the project from the storage.

    Each joined user gets read-only rights. Contact the project author to be able to submit your changes. To know his or her login, open the project properties via the context menu.

  2. Added the ability to easily insert properties and resources to program code. For example, you can quickly add an included file to code. Use command "Insert—MQH as #incude", and select the desired include file. The #include directive with the proper path to the selected file will be inserted to program code.

    The same menu allows adding to program code files in the form of a binary or text array. Among others, you can transfer chart templates with Expert Advisors or indicators: insert your template in the program code as an array, and save it to disk then using the FileSave function. After that the template can be applied on the desired chart right from an Expert Advisor using the ChartApplyTemplate function.

    //| Script program start function                                    |
    void OnStart()
    //--- Template file as a binary array
       unsigned char my_template[]=
          0xFF,0xFE,0x3C, ... ,0x00 // The data array in this example is shortened
    //--- Saving and applying the template
          Print("Custom template saved in \\MQL5\\Files");
             Print("Custom template applied to the current chart");
             Print("Failed to apply custom template");
          Print("Failed to save custom template");

  3. Added an option for converting strings between ASCII, HEX and Base64 formats. Select a line in the source code and click the desired command in the Edit—Convert menu:

  4. Fixed case-insensitive search in files.
  5. Fixed a debugger error that could occur when calculating expressions similar to x.y[0][1].z.
  6. Fixed code navigation using Forward and Back buttons.


  1. New online service MQL5 Cloud Protector has been added to provide additional protection for MQL5 programs. Protection is similar to the option used in the largest store of trading applications MetaTrader Market, where the EX5 product files submitted by sellers are additionally compiled to native code.

    Now, this type of protection is available to all platform users. To protect your files, execute the following command in MetaEditor: Tools—MQL5 Cloud Protector. The only difference of MQL5 Cloud Protector from the mechanism used in the Market, is that the file is not linked to the user's computer. Protected via MQL5 Cloud Protector files can be run on any computers similar to common EX5 files.
    MQL5 Cloud Protector is a secure service. Additional protection is only applied to a compiled file. The source code is not passed to the service. At the first step, a program is compiled to an EX5 file on the user's computer; after that the compiled file is sent over an encrypted channel to the service, where it is protected and returned to the user.

  2. New functions for working with custom financial instruments have been added.

    Function Action
    CustomSymbolCreate Create a custom symbol with the specified name in the specified group
    CustomSymbolDelete Delete a custom symbol with the specified name
    CustomSymbolSetInteger Set the integer type property value for a custom symbol
    CustomSymbolSetDouble Set the real type property value for a custom symbol
    CustomSymbolSetString Set the string type property value for a custom symbol
    CustomSymbolSetMarginRate Set the margin rates depending on the order type and direction for a custom symbol
    CustomSymbolSetSessionQuote Set the start and end time of the specified quotation session for the specified symbol and week day
    CustomSymbolSetSessionTrade Set the start and end time of the specified trading session for the specified symbol and week day
    CustomRatesDelete Delete all bars from the price history of the custom symbol in the specified time interval
    CustomRatesReplace Fully replace the price history of the custom symbol within the specified time interval with the data from the MqlRates type array
    CustomRatesUpdate Add missing bars to the custom symbol history and replace existing data with the ones from the MqlRates type array
    CustomTicksAdd Adds data from an array of the MqlTick type to the price history of a custom symbol. The custom symbol must be selected in the Market Watch window.
    CustomTicksDelete Delete all ticks from the price history of the custom symbol in the specified time interval
    CustomTicksReplace Fully replace the price history of the custom symbol within the specified time interval with the data from the MqlTick type array

  3. Added Generic Data Collections to the Standard Library. They contain classes and interfaces for defining collections based on templates. The new strongly typed collections provide a greater application development convenience and high data handling performance.

    The library is placed to the Include\Generic folder of the terminal's working directory.

  4. Added support for templates for the union data type.
  5. The SYMBOL_VISIBLE trading instrument property has been added. Call of SymbolInfoInteger(symbol, SYMBOL_VISIBLE) returns false if the specified symbol is not visible in the Market Watch.
  6. Added new CHARTEVENT_MOUSE_WHEEL property. The event is called when the mouse wheel is scrolled or pressed on the chart (if CHART_EVENT_MOUSE_WHEEL=true for the chart).
  7. The following chart properties have been added:

    • CHART_EVENT_MOUSE_WHEEL — enabling/disabling generation of CHARTEVENT_MOUSE_WHEEL (mouse scroll and click event on the chart). Possible values: 0 and 1.
    • CHART_CROSSHAIR_TOOL — enable/disable the possibility to switch cursor to the Crosshair mode by a middle click. Possible values: 0 and 1.
    • CHART_CONTEXT_MENU — enable/disable the use of right click to display the context menu of the chart. Possible values: 0 and 1.

  8. Now, drawing buffers with the DRAW_NONE style are not taken into account when calculating the indicator window scale.
  9. Added the CHARTEVENT_CHART_CHANGE event generation when setting the CHART_SCALEFIX (fixed scale) property for the chart.
  10. The ArraySwap function has been added, allowing to quickly swap the contents of dynamic arrays.
    bool  ArraySwap(
       void&  array1[],      // The first array
       void&  array2[]       // The second array
    The function accepts dynamic arrays of the same type and the same dimensions. For multidimensional arrays, the number of elements in all dimensions except the first one should match.

  11. Added the new property TERMINAL_RETRANSMISSION — percentage of resent network packets (re-transmits) in the TCP/IP protocol for all running applications and services on the given computer. Packet loss occurs even in the fastest and correctly configured networks. In this case, there is no confirmation of packet delivery between the recipient and the sender. Therefore, lost packets are resent.

    The terminal does not calculate this value. It is requested from the operating system once per minute. It is not an indication of the connection quality between a particular terminal and a trade server, since the percentage is calculated for the entire network activity, including system and background activity.

    The TERMINAL_RETRANSMISSION property is added to the ENUM_TERMINAL_INFO_DOUBLE enumeration, the TerminalInfoDouble function is used to obtain it.
  12. Optimized working with trade history.


  1. Fixed indication of order filling type in case of forced closing of positions opened according to a Signal. The 'Stop if the account is lower than XXX USD' option is provided in signal copying options: if equity drops below a specified level, copying of trade signals is automatically terminated, all positions are closed. Earlier, an incorrect filling type could be set for position closing orders in case of forced closure. Now the terminal checks allowed filling types in symbol settings and indicates a proper option.


  1. The behavior of the HistoryOrderSelect function in the Strategy Tester now corresponds to the same function in the client terminal.
  2. The behavior of the CopyTicks and CopyTicksRange functions in the Strategy Tester now corresponds to the same functions in the client terminal.
  3. Optimized display of graphics objects during visual testing.
  4. Fixed display of testing results of exchange instruments (with the exchange risk management model). Now, the chart only shows the equity, while the balance and the deposit load are not shown. The trading status of such accounts is evaluated based on the equity level. The balance only shows the amount of money on the account and ignores the trader's assets and liabilities. Deposit load (margin/equity) is not displayed, because in the exchange calculation mode margin is equal to the current discounted value of the asset/liability, and it changes along with equity.
  • The user interface is now also available in Dutch.
  • Updated documentation.
  • 23 August 2017
    MetaTrader 5 iOS build 1649: market statistics of financial instruments

    The new version provides the possibility to view market statistics of financial instruments traded in the exchange execution mode. In order to view the statistics, open the menu of any symbol in Market Watch, and select 'Statistics'.

    Operations with positions in the Trade tab have become more convenient. Now, a single tap on a position or order will reveal the detailed information and available actions, such as closing, modifying or increasing the position volume, as well as opening the chart of the position symbol.

    2 August 2017
    MetaTrader 5 Android build 1642: Simplified way to request a real account

    In MetaTrader 5 for Android, it is now possible to easily create preliminary brokerage accounts. Select "Open a real account" from the menu and find your broker in the list of servers. You will only need attach two documents, including your identity document and a bank account statement. Your request will be forwarded to the broker, who may request additional information required for account opening.

    21 July 2017
    MetaTrader 5 Build 1640: creating and testing custom symbols


    1. Now it is possible to create custom financial instruments in the terminal. Using the new option, you can create any symbol, configure its settings, import your price data to the symbol and view its charts.

      Creating a Custom Symbol
      Open the symbol management window using the context menu of the "Market Watch" window and click on "Create Custom Symbol":

      A large number of symbol parameters can be configured. The full list of parameters and their description is available in the documentation. You can quickly configure your custom symbol by copying parameters of any similar instrument and modifying them. Select an existing symbol in the "Copy from" field.
      The name of the custom symbol must not match the names of symbols provided by the brokers. If you connect to the server, on which a symbol with the same name exists, the custom symbol will be deleted.
      Commands for importing and exporting parameters are also available here. You can easily share custom symbols or transfer symbols between your terminals. Settings are exported to JSON text files.

      Managing Custom Symbols
      All symbols are displayed in a separate Custom group. If you need to modify or delete a symbol, use the context menu of the list:

      Importing the Price History
      You can import price data to your custom symbol from any text file. Choose a symbol and go to the "Bars" tab.

      In the import dialog, specify the path to the file and set the required parameters:

      • Separator — element separator in a text file.
      • Skip columns and rows — amount of columns (from left to right) and rows (top to bottom) to be skipped during an import.
      • Shift — time shift by hours. The option is used when importing data saved in a different time zone.
      • Use selected only — import only rows highlighted in the row view area. You can highlight rows with your mouse while holding Ctrl or Shift.

      A file with 1-minute bars should have the following format: Date Time Open High Low Close TickVolume Volume Spread. For example;
      2016.06.27    00:01:00    1.10024    1.10136    1.10024    1.10070    18    54000000    44
      2016.06.27    00:02:00    1.10070    1.10165    1.10070    1.10165    32    55575000    46
      2016.06.27    00:03:00    1.10166    1.10166    1.10136    1.10163    13    13000000    46
      2016.06.27    00:04:00    1.10163    1.10204    1.10155    1.10160    23    51000000    41
      You can use data from any existing instrument for your custom symbol. Export data (the option was added in the previous platform version), modify them if necessary, and import the data back.
      The price history is stored in the form of one-minute bars in MetaTrader 5. All other timeframes are created based on these bars. You can also import data of higher timeframes, but charts on lower timeframes will have gaps in this case. For example, if you import one-hour data, one bar per hour will be shown on the M1 chart.
      Price data of custom symbols are saved in a separate Custom directory (not in the directories where data of trade servers are stored):
      C:\Users\[windows account]\AppData\Roaming\MetaQuotes\Terminal\[instance id]\bases\Custom

      Using Custom Symbols
      Use of custom symbols is similar to the use of instruments provided by the broker. Custom symbols are displayed in the Market Watch window; you can open charts of such symbols and apply indicators and analytical objects on them. Custom symbols cannot be traded.

      Testing Strategies on Custom Symbols
      Custom symbols can be used for testing trading robots and indicators in the strategy tester. This allows for optimization of strategies even for the financial symbols a broker is currently unable to provide. You just need to import history correctly and configure the custom symbol properties.

      When calculating the margin and profit, the strategy tester automatically uses available cross rates. Suppose that we have created AUDCAD.custom symbol with the Forex type of margin calculation, and our account currency is USD. In this case, the tester searches for the necessary symbols in the following order based on the Forex symbol name:
      1.     first, the search is performed for the symbols of AUDUSD.custom (for calculating the margin) and USDCAD.custom (for calculating the trade profit) forms
      2.     if any of these symbols is not present, the search is performed for the first symbol corresponding to the necessary currency pairs by name (AUDUSD and USDCAD respectively). For example, AUDUSD.b and NZDUSD.b symbols have been found. This means their rates are to be used to calculate the margin and profit.

      Instruments with other types of margin calculation (Futures and Stock Exchange) require a currency pair to convert the instrument currency into the deposit one. Suppose that we have created a custom symbol with profit and margin currency expressed in GBP, while the deposit currency is CHF. In this case, the search for testing symbols is performed in the following order:
      1. The presence of a trading symbol corresponding to GBPCHF (GBP vs CHF) is checked.
      2. If no such symbol exists, the search is performed for the first trading symbol that corresponds to GBPCHF by its name, for example GBPCHF.b or GBPCHF.def.

      When testing applications using custom instruments, make sure that the trading account has all the necessary currency pairs. Otherwise, the calculation of financial results and margin requirements during testing will not be possible.

      More possibilities will be available in future platform versions
      The development of custom symbols has not completed yet, and more functions will be added in the next builds of the platform. You will be able to import history to custom symbols straight from Expert Advisors, as well as broadcast data (add quotes) of such symbols in real time.

    2. Added filtering of the Time & Sales feature by volume.

      Deals with the volume less than the specified value can be hidden from the Time & Sales table. If this filter is applied, only large deals will appear in the Time & Sales window.

      Double click on the first line in the Time & Sales window, specify the minimum volume in lots, and then click on any other area of ​​the Market Depth. Trades will be filtered, and the current filter value will appear in the volume column header.

      You can also specify the minimum volume using the Time & Sales context menu.

    3. Added an option for binding the Market Depth to an active chart. Every time you switch to a chart of a financial instrument, the same instrument will be automatically enabled in the Market Depth window. So, you will not need to open the Market Depth window for each new symbol.

    4. Fixed refreshing of toolbars after minimizing and maximizing the terminal window.
    5. Fixed generation of position trading history if trade and position tickets overlap.


    1. Added an option for profiling MQL5 programs on a price history. This option allows checking the performance of programs without waiting for new ticks.

      When profiling based on real data, the program is launched in a normal chart of the terminal. Many programs, especially indicators, only perform calculations at the arrival of a new tick (OnTick, OnCalculate). Thus, in order to evaluate performance, you have to wait for new ticks in real time. If you test a program using history data, you can immediately provide the required load. Profiling is launched in the visual mode in the Strategy Tester, and you receive a lot of new tick events at a time.

    2. Added support for union. Union is a special data type consisting of several variables sharing the same memory area. Therefore, the union provides the ability to interpret the same bit sequence in two (or more) different ways. Union declaration starts with the 'union' keyword.
      union LongDouble
        long   long_value;
        double double_value;
      Unlike the structure, various union members belong to the same memory area. In this example, the union of LongDouble is declared with long and double type values sharing the same memory area. Please note that it is impossible to make the union store a long integer value and a double real value simultaneously (unlike a structure), since long_value and double_value variables overlap (in memory). On the other hand, an MQL5 program is able to process data containing in the union as an integer (long) or real (double) value at any time. Therefore, the union allows receiving two (or more) options for representing the same data sequence.

      During the union declaration, the compiler automatically allocates the memory area sufficient to store the largest type (by volume) in the variable union. The same syntax is used for accessing the union element as for the structures, i.e. the point operator.
      union LongDouble
        long   long_value;
        double double_value;
      //| Script program start function                                    |
      void OnStart()
         LongDouble lb;
      //--- get and display the invalid -nan(ind) number
         printf("1.  double=%f                integer=%I64X",lb.double_value,lb.long_value);
      //--- largest normalized value (DBL_MAX)
         printf("2.  double=%.16e  integer=%I64X",lb.double_value,lb.long_value);
      //--- smallest positive normalized (DBL_MIN)
         printf("3.  double=%.16e  integer=%.16I64X",lb.double_value,lb.long_value);
      /*  Execution result
          1.  double=-nan(ind)                integer=FFF8000000000000
          2.  double=1.7976931348623157e+308  integer=7FEFFFFFFFFFFFFF
          3.  double=2.2250738585072014e-308  integer=0010000000000000

    3. Added automatic generation of an implicit copy operator for the objects of structures and classes. Now, the compiler automatically creates copy operators, which allows writing simple entries for objects, such as b=a:
      class Foo
         int               value;
         string Description(void){return IntegerToString(value);};
         //--- default constructor
         //--- parameterized constructor   
                           Foo(int v){value=v;};
      //|  structure containing Foo type objects                           |
      struct MyStruct
         string            s;
         Foo               foo;
      //| Script program start function                                    |
      void OnStart()
         MyStruct a,b;
         Foo an_foo(5);
         Print("a.s=",a.s," a.foo.Description()=",a.foo.Description());
         Print("b.s=",b.s," b.foo.Description()=",b.foo.Description());
         Print("a.s=",a.s," a.foo.Description()=",a.foo.Description());
         Print("b.s=",b.s," b.foo.Description()=",b.foo.Description());
         Execution result;
         a.s=test a.foo.Description()=5
         b.s= b.foo.Description()=-1
         a.s=test a.foo.Description()=5
         b.s=test b.foo.Description()=5
      Memberwise copying of objects is performed in the implicit operator.

      • If a member is an object, the corresponding copying operator for this object is called.
      • If a member is an array of objects, the receiving array is increased or reduced to the require size using ArrayResize before calling the appropriate copying operator for each element.
      • If a member is an array of simple types, the ArrayCopy function is used for copying.
      • If a member is a pointer to an object, the pointer is copied rather than the object to which it points.

      If necessary, you can override the behavior and create your own option instead of an implicit copy operator, using overloading.

    4. Optimized memory use when accessing the price history from Expert Advisors using the Copy* function. Memory consumption will be reduced manifold when working with large amounts of data.

    5. Now, the TimeToStruct function returns a boolean value, allowing to check the success of conversion of datetime to MqlDateTime.
    6. Added ban to use the FileWriteStruct and FileReadStruct functions for structures containing strings, dynamic arrays, object and pointers.
    7. The following response codes have been added:

      • TRADE_RETCODE_REJECT_CANCEL — the request to activate a pending order is rejected, the order is canceled
      • TRADE_RETCODE_LONG_ONLY — the request is rejected, because the rule "Only long positions are allowed" is set for the symbol
      • TRADE_RETCODE_SHORT_ONLY — the request is rejected, because the rule "Only short positions are allowed" is set for the symbol
      • TRADE_RETCODE_CLOSE_ONLY — the request is rejected, because the rule "Only closing of existing positions is allowed" is set for the symbol

    8. Added new return value of the SymbolInfoInteger function with the SYMBOL_ORDER_MODE parameter. SYMBOL_ORDER_CLOSEBY — permission of a Close By operation, i.e. closing a position by an opposite open position.
    9. The SYMBOL_CUSTOM boolean property has been added to the ENUM_SYMBOL_INFO_INTEGER enumeration. The property allows finding out if the symbol is custom. Use the SymbolInfoInteger function to get the property.
    10. Now it is possible to obtain the reason for the creation of an order, deal or position.

      New properties

      Order, deal and position creation reasons
      Three variables have been added for obtaining the reasons for the creation of trading operations:

      POSITION_REASON_CLIENT DEAL_REASON_CLIENT ORDER_REASON_CLIENT The operation was executed as a result of activation of an order placed from a desktop terminal
      POSITION_REASON_MOBILE DEAL_REASON_MOBILE ORDER_REASON_MOBILE The operation was executed as a result of activation of an order placed from a mobile application
      POSITION_REASON_WEB DEAL_REASON_WEB ORDER_REASON_WEB The operation was executed as a result of activation of an order placed from the web platform
      POSITION_REASON_EXPERT DEAL_REASON_EXPERT ORDER_REASON_EXPERT The operation was executed as a result of activation of an order placed from an MQL5 program, i.e. an Expert Advisor or a script
      - DEAL_REASON_SL ORDER_REASON_SL The operation was executed as a result of Stop Loss activation
      - DEAL_REASON_TP ORDER_REASON_TP The operation was executed as a result of Take Profit activation
      - DEAL_REASON_SO ORDER_REASON_SO The operation was executed as a result of the Stop Out event
      - DEAL_REASON_ROLLOVER - The deal was executed due to a rollover
      - DEAL_REASON_VMARGIN - The deal was executed after charging the variation margin
      - DEAL_REASON_SPLIT - The deal was executed after the split (price reduction) of a stock or another asset, which had an open position during split announcement

    11. Optimized synchronization and access to the tick history.
    12. Fixed returning of ticks to the statistic array in the CopyTicksRange function. In earlier versions, 0 ticks were always returned in this case.
    13. Various fixes have been made in the Fuzzy Logic Library.


    1. : Fixed opening of a signal from the website when there is no trading account connection.


    1. Optimized and accelerated work with the history of orders and deals. Operation speed will be increased manifold when working with large amounts of data (tens of thousands of history entries).
    2. Fixed calculation of position holding time in the testing report.


    1. Fixed the display of the contents of static class member arrays in the debugger.
    2. Added a list of breakpoints in the debugged program. The list can be opened using the context menu of the Debug tab:

      To jump to a breakpoint, double-click on it.

    Updated documentation.
    8 June 2017
    MetaTrader 5 iOS build 1605: opening a preliminary brokerage account

    The new MetaTrader 5 for iOS build 1605 provides the possibility to easily open preliminary brokerage accounts. Select "Open a real account" from the menu and find your broker in the list of servers. Fill in your personal details, attach two documents to confirm your identity and address, and submit the request. Your broker will open a real account for you and request additional information if necessary.

    The new MetaTrader 5 iOS also features the optimized and redesigned email section:

    • Related emails are now combined into threads and are displayed as one item in the list of emails.
    • A preview of email attachments has been added.
    • Up to five attachments can now be sent in one email (file size should not exceed 8 Mb).
    26 April 2017
    MetaTrader 5 Build 1596: access to the price history


    1. Added access to the bar and tick history. Now, it is possible to download the full 1-minute and tick history from the server through the trading platform interface, not only using the MQL5 language. Access to price data is expanded as part of preparations for the launch of custom data-feed functions. In the near future, the platform will provide the possibility to build charts based on users' price data, as well as to create synthetic symbols and use offline charts.

      To download the data, open the symbol management dialog from the context menu of the "Market Watch" window:

      The dialog features two new tabs: "Bars" and "Ticks". Select the symbol, the desired time interval and click "Request". The platform will request from the server all available data, and will immediately display the data if they have already been downloaded. Saved price data can be exported to a CSV file.

    2. Added display of time with a millisecond precision for positions, deals and orders.

    3. In the trade dialog, fixed notifying about the refusal to execute a Close By request.


    1. Fixed the PositionSelect function. The function could occasionally select a position different from the one having the lowest ticket number.
    2. Fixed operation of the CopyTicks and CopyTicksRange functions when requesting very deep tick history data.


    1. Fixed copying of operations that increase the size of an existing position. The error could occasionally occur on netting accounts.


    1. Fixed processing of limit orders for exchange instruments. Orders placed better than the market (the buy price is below the market price or the sell price is above that) are executed without slippage. Orders placed worse than the market or at the market price are executed immediately at the market price as of the order placing time.

    Updated documentation.

    8 April 2017
    MetaTrader 5 Android build 1576: Trading history features positions

    Trading history in MetaTrader 5 Android can be now presented in the form of positions. Previously, the History tab contained only orders and deals whereas now, trading can be also analyzed in terms of positions. All deals related to one position are grouped together into one record and are displaying the following:

    • Position Open and Close time (determined by the first and last deals)
    • Position volume (if a position was closed partially, the record contains the closed and the initial volumes)
    • The weighted average position Open and Close prices
    • The total financial result of all position-related deals

    30 March 2017
    MetaTrader 5 iOS build 1547: trading history in the form of positions

    Now trading history can be presented in the form of positions. Previously, the History tab contained only orders and deals. Now, it features positions as well. The trading platform collects data on deals related to a position and then combines the data into one record. The record contains:

    • Position opening and closing time determined by the first and last trades
    • Position volume. If the position was closed partially, the record contains the closed and initial volumes
    • The weighted average open and close prices of the position
    • The total financial result of deals related to the position

    24 March 2017
    MetaTrader 5 Build 1570: improved Market showcase and extended MQL5 template functions


    1. Updated the showcase of the MetaTrader Market store of applications. Now, you can browse through trading robots and technical indicators more conveniently. We have updated the design and added product selections:

      • The main page now features popular experts, indicators, new Market products, as well as top free applications.
      • The Experts, Indicators and Utilities sections now have subsections: grid and hedging robots, trend and multi-currency indicators, and much more.

    2. Fixed the client terminal update and built-in purchases in the Market, Signals and Virtual Hosting when using a Windows account with limited rights.
    3. Fixed occasional incorrect sorting of position history.
    4. Optimized and fixed display of the Exposure tab.


    1. Added support for overloading template functions using parameters. For example, we have a template function that writes the value of the second parameter to the first one using typecasting. MQL5 does not allow typecasting string to bool. However, we can do that ourselves. Let's create an overload of a template function:
      //| Template function                                                |
      template<typename T1,typename T2>
      string Assign(T1 &var1,T2 var2)
      //| Special overload for bool+string                                 |
      string Assign(bool &var1,string var2)
         var1=(StringCompare(var2,"true",false) || StringToInteger(var2)!=0);
      //| Script program start function                                    |
      void OnStart()
         int i;
         bool b;
      As a result of the code execution, we can see that the Assign() template function has been used for the int+string pair, while the overloaded version has already been used for the bool+string pair during the second call.
      string Assign<int,string>(int&,string)
      string Assign(bool&,string)

    2. Added explicit specialization of template functions. To do this, specify typification parameters before the list of the call parameters:
      template<typename T>
      T Func() { return (T)0; }
      void OnInit()
         Func<double>();   // explicit template function specialization
      Thus, typification is performed by explicit specification of types rather than via the call parameters.

    3. Optimized display of custom indicators with the DRAW_ZIGZAG drawing type.
    4. Added the new values to the ENUM_DEAL_TYPE deal types enumeration:

      • DEAL_DIVIDEND — dividend operations.
      • DEAL_DIVIDEND_FRANKED — franked (non-taxable) dividend operations (tax is paid by a company, not a client).
      • DEAL_TAX — charging a tax.

    5. Fixed display of custom indicators with the DRAW_FILLING drawing type. In case the upper and lower line coordinates coincide, a thin line is drawn.
    6. Fixed calculating the Bitmap Label object coordinates when setting the CHART_SHOW parameter to 'false'. The parameter is set by the ChartSetInteger function and allows hiding all price chart elements to create a custom program interface.
    7. Fixed re-encoding of 24-bit images when placing them to MQL5 application resources.
    8. Fixed printing structures using the ArrayPrint function.
    9. Updated the MQL5 standard libraries.


    1. Added translation of the user interface into Malay.


    1. Signals: Fixed opening a signal page in the terminal when moving from the MQL5.community website while not connected to a trading account.


    1. Fixed the CopyTicks function operation in the strategy tester.
    2. Fixed sorting Withdrawal trades when generating a report.
    3. Fixed modifying pending orders.


    1. Hosting: Fixed display of the virtual hosting wizard on ultra-high resolution screens (4К).

    Updated documentation.

    17 February 2017
    MetaTrader 5 Platform Build 1545: fast switching between windows and changing price values with the mouse wheel


    1. Fast switch between the 'Toolbox' and 'Strategy Tester' windows.

    2. New option allows editing prices and volumes of orders using the mouse wheel:

    3. Now, when you go to download mobile terminals, the list of your trade servers is remembered. Then, when you install MetaTrader on your iPhone or Android device, a ready list of servers will be shown to you. You can quickly connect to your existing trading accounts. The server of the currently connected account will be displayed first in the mobile terminal.

    4. Significantly reduced load on the terminal, created by invisible (minimized) charts and objects.
    5. Fixed occasional incorrect triggering of trailing stop levels.
    6. Fixed filtering of trades by symbol in the account trading history.
    7. Fixed display of the 'Type' field in the history of positions.
    8. Fixed presentation of the trading history in the form of positions.
    9. Fixed display of custom indicators whose drawing type is DRAW_COLOR_LINE, DRAW_COLOR_ZIGZAG and DRAW_COLOR_SECTION, in case CLR_NONE is used for the color.


    1. Fixed template typing using a constant pointer.
    2. Fixed control of access to private and protected class members.


    1. Fixed activation of limit orders on Exchange instruments, when the order trigger price is worse than the current market (the Buy price is higher than or the Sell price is lower than the market price).
    2. Removed restriction connected with testing of custom indicators having more than 64 input parameters.
    3. Added UI translation into Hindi.

    Updated documentation.

    9 February 2017
    MetaTrader 5 iOS build 1509: Log in to MQL5.com with Facebook
    • Added the ability to sign up for and log in to your MQL5.com account with Facebook. If you have a profile in this social network, you can access the chats and the entire set of the MetaTrader 5 services in a few clicks.

    • Improvements and fixes.
    27 January 2017
    MetaTrader 5 build 1525: Representing trading history as positions and tester improvements


    1. Now trading history can be additionally displayed in the form of positions. The terminal collects data on deals related to a position (position opening, additional volume, partial and full closure), and then combines the data into one record providing the following details:

      • Position opening and closing time determined by the first and last trade respectively
      • Position volume. If part of the position has been closed, the record contains the closed volume and the initial volume
      • The weighted average position opening price and its close price
      • The total financial result of deals related to the position

      On hedging accounts, the new history form is similar to the account history used in MetaTrader 4.

    2.   A new command has been added, which allows visualizing trades on a symbol's chart.

      • If you need to show deals of a selected position/symbol, click "Add [symbol name] Deals". Appropriate deals will be displayed on all currently open charts of the selected symbol. If there are no open charts of that symbol, a new chart will be opened.
      • Click "Add All Deals" in order to show deals of all symbols from the account history. Appropriate deals of corresponding symbols will be added to all open charts.

    3. Added display of the international name of a trading instrument in contract specification, as well as search by the international name in symbol management dialog.

    4. Added command for terminal window resolution setup. The function will be helpful for making videos. The menu provides the most popular resolution options used in various video services, such as YouTube.

    5. Chart templates and profiles have been moved from [Terminal Data Folder\Profiles] to [Terminal Data Folder\MQL5\Profiles]. Now you can easily add templates to the MQL5 Storage and access them from any PC.


    1. Added support for resource variables. Development of some programs can be greatly facilitated by using such variables. For example, you can write a code of an OpenCL program in a separate CL file and then include it as a string into your MQL5 program resources. Before the update, such a code needed to be described as one large string variable.

      Declaration of the resource variable
      #resource path_to_resource_file as type_of_resource_variable name_of_resource_variable

      • Encoding of string files is determined automatically based on the BOM (the header). If BOM is absent, encoding is defined by the file contents. ANSI, UTF-8 and UTF-16 are supported. All strings are converted to Unicode.
      • Data of such a resource can only be addressed via a variable. Automatic addressing using "::<resource name>" is not available.
      • The special bitmap resource variable type shows to the compiler that the resource is an image. In this case, the resource variable gets the uint type.
      • When using a 24-bit image, the alpha channel component is set to 255 for all the image pixels.
      • When using a 32-bit image without the alpha channel, the alpha channel component is also set to 255 for all the image pixels.
      • When loading a 32-bit image with the alpha channel, the pixels are not processed in any way.
      • The bitmap type array resource variable may have two dimensions. In this case, the array size is defined as [image_height ][ image_width ].
      • If an array of one dimension is specified, the number of elements is equal to image_height*image_width.
      • If the resource file size is not a multiple of the array element size, the remaining data will be cropped. For example, if file size is 14 bytes, the number of elements for an int array will be equal to 3, while the other 2 bytes (14 - sizeof(int)*3) will be discarded.

      Examples of Use
      #resource "data.bin" as int ExtData[]             // declaring the numeric array containing data from the data.bin file
      #resource "data.bin" as MqlRates ExtData[]        // declaring the simple structures array containing data from the data.bin file
      #resource "data.txt" as string ExtCode            // declaring the string containing the data.txt file data
      #resource "data.txt" as string ExtCode[]          // declaring the string array containing the data.txt file data
      #resource "image.bmp" as bitmap ExtBitmap[]       // declaring the one-dimensional array containing a bitmap from the BMP file, array size = width * height
      #resource "image.bmp" as bitmap ExtBitmap2[][]    // declaring the two-dimensional array containing a bitmap from the BMP file, array size [hight][width]

    2. New property CHART_SHOW allows disabling chart display. Functions ChartGetInteger and ChartSetInteger are used to get and set the property.

      If false, drawing of any price chart attributes is disabled and all chart border indents are eliminated, including time and price scales, quick navigation bar, Calendar event labels, trade labels, indicator and bar tooltips, indicator subwindows, volume histograms, etc.

      Disabling the drawing is a perfect solution for creating a custom program interface using graphical resources.

      The graphical objects are always drawn regardless of the CHART_SHOW property value.

    3. New property CHART_KEYBOARD_CONTROL allows enabling/disabling chart control using the keyboard ("Home", "End", "PageUp", "+", "-", "Up arrow", etc.). Setting CHART_KEYBOARD_CONTROL to false disables chart scrolling and scaling while leaving intact the ability to receive the keys pressing events in OnChartEvent().

      Functions ChartGetInteger and ChartSetInteger allow getting and setting the property.

    4. Added new functions for working with OpenCL.

      New properties for working with memory
      Four new properties can be received through CLGetInfoIntegrer:
      • CL_DEVICE_MAX_WORK_GROUP_SIZE — the total number of local working groups available for an OpenCL device.
      • CL_KERNEL_WORK_GROUP_SIZE — the total number of local working groups available for an OpenCL program.
      • CL_KERNEL_LOCAL_MEM_SIZE — size of the local memory in bytes used by an OpenCL program for solving all parallel tasks in a group. Use CL_DEVICE_LOCAL_MEM_SIZE to receive the maximum available value.
      • CL_KERNEL_PRIVATE_MEM_SIZE — the minimum size of the private memory (in bytes) used by each task in the OpenCL program kernel.

      bool CLExecutionStatus(int kernel)
      Returns the OpenCL program execution status. The OpenCL program kernel handle is passed as the parameter.

      bool CLSetKernelArgMemLocal(int kernel_handle,int arg_index,ulong local_mem_size)
      Sets the local buffer as an argument of the kernel function. The OpenCL program kernel handle, the number of the OpenCL function argument and the buffer size are passed as parameters.

    5. New response code TRADE_RETCODE_LIMIT_POSITIONS has been added. The number of open positions simultaneously present on an account can be limited by the server settings. After a limit is reached, the server returns the TRADE_RETCODE_LIMIT_POSITIONS error when attempting to place an order. The limitation operates differently depending on the position accounting type:

      • Netting — number of open positions is considered. When a limit is reached, the platform disables placing new orders whose execution may increase the number of open positions. In fact, the platform allows placing orders only for the symbols that already have open positions. The current pending orders are not considered since their execution may lead to changes in the current positions but it cannot increase their number.
      • Hedging — pending orders are considered together with open positions, since a pending order activation always leads to opening a new position. When a limit is reached, the platform disables placing both new market orders for opening positions and pending orders.

    6. Fixed error that could occasionally cause skipping of ticks in the tick history.
    7. Fixed indirect template typing errors.
    8. Updated library of mathematical statistics functions.
    9. Added TranslateKey function that returns a Unicode character by a virtual key code considering the current input language and the status of control keys. The function uses ToUnicodeEx to convert keys pressed by a user into Unicode characters.
      void OnChartEvent(const int id,const long& lparam,const double& dparam,const string& sparam)
            short sym=TranslateKey((int)lparam);
            //--- if the entered character is successfully converted to Unicode
               Print("Error in TranslateKey for key=",lparam);


    1. Fixed product page opening when downloading a demo version.


    1. After optimization completion, results are now automatically sorted by the "Results" column.
    2. A new command in the context menu of the optimization results tab allows to automatically open results when the optimization completes.
    3. The Strategy Tester now stays in the optimization mode after starting a single testing run. In earlier versions, if a single test was started from the optimization results tab, the strategy tester switched to the single testing mode. The optimization mode needed to be enabled in the settings in order to perform further optimization.
    4. Now sets of input parameters can be saved as local strategy tester settings, which can be conveniently accessed from the context menu, in addition to traditional .set files.

    5. Added UI translations into Mongolian, Hungarian, Romanian and Urdu.


    1. Added ability to change the order of watched expressions in the debugger window. An expression can be dragged to the required position using the mouse.

    2. Fixed determining of source file encoding.
    3. Fixed search by files in the UTF-8 encoding.
    4. Fixed text selection with a mouse in case the text contains tabs.
    5. Added UI translations into Hungarian and Romanian.

    Updated documentation.

    18 January 2017
    MetaTrader 5 Android build 1506: Trade filtering and sorting
    • Trade and History tabs now offer sorting by symbols (financial instruments), orders and trading time. Apart from sorting, you can also filter trades by symbols in the History tab.

    • Working with charts in multi-window mode has been optimized. The improved menu allows you to open new windows, delete old ones, as well as re-arrange them and select a desired layout (vertical, horizontal or tile).

    9 December 2016
    MetaTrader 5 Build 1495: Improvements in MQL5 for working with custom graphics


    1. Added the CopyTicksRange function.
    2. Added improved anti-aliasing functions to CCanvas class:
    3. Added description of the graphical library to the MQL5 Reference. The library allows to quickly create histograms, distributions and line graphs right on the price charts.
    4. Added the identifiers of the state of system keys to the list of constants of Client Terminal Properties. A call to TerminalInfoInteger(TERMINAL_KEYSTATE_XXX) returns the same state code of a key as the GetKeyState() function in MSDN.
    5. Disabled the support for casting of string type to bool. To check strings, one needs to use explicit conditions. For example, in the new build, compilation of the following code will result in an error:
      string str;
      if(str)                        // will result in "Cannot convert type 'string' to 'bool'" compilation error (no error would appear in the previous versions)
         Print("str is true");
      One should use an explicit condition:
      string str;
      //--- check if the string is initialized
         Print("str is true");
      //--- check if the string value is "true"
         Print("str is true");
      //--- check if the string is integer and is not equal to zero
         Print("str is true");

    Fixed errors reported in crash logs.

    2 December 2016
    MetaTrader 5 Web Platform: Two-factor authentication and password change
    • We have added the two-factor authentication option using one-time passwords, which improves protection of accounts against unauthorized access. In order to enable the two-factor authentication, launch the MetaTrader 5 mobile application. Log in and choose the One-time password (OTP) generator option in the Settings window. The OTP generator can bind all your trading accounts and automatically generate a unique one-time six-digit password for each account. Enter this password when logging in to the web platform.

    • Another new option allows changing the master and investor passwords. Take this opportunity to create an easy-to-remember personal ID.
    • Also, the updated web platform can automatically generate demo accounts. Now, you can launch the MetaTrader 5 Web platform from any browser and start trading Forex, Stocks or Futures financial instruments immediately.
    24 November 2016
    MetaTrader 5 Build 1485: Additional testing mode and graphics in the Standard Library


    1. The order of entries in the terminal and MetaEditor journals has changed. Before the update, the latest log entries were featured first. Now the oldest entries are shown in the beginning of the journal. A more conventional reverse sorting order makes reading the journal easier.

      In addition, it is now possible to hide the 'Time' and 'Source' columns using the journal context menu.

    2. In the hedging mode, the ticket of a closed position is now displayed for the orders and deals in the trading history. This makes it easier to find related opening and closing operations.

    3. Fixed an error that caused copying of SL/TP from an existing position to a new position on the same instrument. The error could occur when using One Click Trading functions (for example, from the chart or from the Market Watch window) in the hedging mode.
    4. Fixed display of arrow objects on ultra-high-definition screens (4K).


    1. A new ArrayPrint function has been added, which prints simple types and structures to the array log.
      void  ArrayPrint(
         const void&   array[],             // Printed array
         uint          digits=_Digits,      // The number of decimal places
         const string  separator=NULL,      // A separator between the values of the structure fields
         ulong         start=0,             // The index of the first displayed element
         ulong         count=WHOLE_ARRAY,   // The number of displayed elements
      ArrayPrint does not print all fields of a structure array to logs – array fields and pointer fields of objects are skipped. If you want to print all fields of a structure, you should use a custom function for the mass printing with a desired formatting.
      //--- Prints the values of the last 10 bars
         MqlRates rates[];
            for(int i=0;i<10;i++)
            PrintFormat("CopyRates failed, error code=%d",GetLastError());
      //--- A log example
                          [time]  [open]  [high]   [low] [close] [tick_volume] [spread] [real_volume]
         [0] 2016.11.09 04:00:00 1.11242 1.12314 1.11187 1.12295         18110       10   17300175000
         [1] 2016.11.09 05:00:00 1.12296 1.12825 1.11930 1.12747         17829        9   15632176000
         [2] 2016.11.09 06:00:00 1.12747 1.12991 1.12586 1.12744         13458       10    9593492000
         [3] 2016.11.09 07:00:00 1.12743 1.12763 1.11988 1.12194         15362        9   12352245000
         [4] 2016.11.09 08:00:00 1.12194 1.12262 1.11058 1.11172         16833        9   12961333000
         [5] 2016.11.09 09:00:00 1.11173 1.11348 1.10803 1.11052         15933        8   10720384000
         [6] 2016.11.09 10:00:00 1.11052 1.11065 1.10289 1.10528         11888        9    8084811000
         [7] 2016.11.09 11:00:00 1.10512 1.11041 1.10472 1.10915          7284       10    5087113000
         [8] 2016.11.09 12:00:00 1.10915 1.11079 1.10892 1.10904          8710        9    6769629000
         [9] 2016.11.09 13:00:00 1.10904 1.10913 1.10223 1.10263          8956        7    7192138000
         [time] [open] [high] [low] [close] [tick_volume] [spread] [real_volume]
         [0] 2016.11.09 04:00:00 1.11242 1.12314 1.11187 1.12295 18110 10 17300175000 
         [1] 2016.11.09 05:00:00 1.12296 1.12825 1.1193 1.12747 17829 9 15632176000 
         [2] 2016.11.09 06:00:00 1.12747 1.12991 1.12586 1.12744 13458 10 9593492000 
         [3] 2016.11.09 07:00:00 1.12743 1.12763 1.11988 1.12194 15362 9 12352245000 
         [4] 2016.11.09 08:00:00 1.12194 1.12262 1.11058 1.11172 16833 9 12961333000 
         [5] 2016.11.09 09:00:00 1.11173 1.11348 1.10803 1.11052 15933 8 10720384000 
         [6] 2016.11.09 10:00:00 1.11052 1.11065 1.10289 1.10528 11888 9 8084811000 
         [7] 2016.11.09 11:00:00 1.10512 1.11041 1.10472 1.10915 7284 10 5087113000 
         [8] 2016.11.09 12:00:00 1.10915 1.11079 1.10892 1.10904 8710 9 6769629000 
         [9] 2016.11.09 13:00:00 1.10904 1.10913 1.10223 1.10263 8956 7 7192138000 

    2. Fixed error in the addition of strings of type S1=S2+S1
    3. The behavior of the ArrayResize function has changed. If -1 is passed as the reserve_size parameter, the function only releases unused (reserved) memory if the function does not increase the array size. Setting the new array size to 0 with reserve_size=-1 is equivalent to the ArrayFree call. The new behavior allows optimizing memory usage in MQL5 programs.
      void OnStart()
         int arr[];
      //--- Amount of memory initially used 
         Print("Array size:",ArraySize(arr)," Memory used:",MQLInfoInteger(MQL_MEMORY_USED)," MB");
      //--- Amount of memory used for the array of size 1, with a reserve
         Print("Array size:",ArraySize(arr)," Memory used:",MQLInfoInteger(MQL_MEMORY_USED)," MB");
      //--- After the increase of the array, the amount of memory used will not change due to the reserve
         Print("Array size:",ArraySize(arr)," Memory used:",MQLInfoInteger(MQL_MEMORY_USED)," MB");
      //--- After reducing the array, the memory size will not change either
         Print("Array size:",ArraySize(arr)," Memory used:",MQLInfoInteger(MQL_MEMORY_USED)," MB");
      //--- Unused memory will be released after the removal of the reserve
         Print("Array size:",ArraySize(arr)," Memory used:",MQLInfoInteger(MQL_MEMORY_USED)," MB");

    4. Chart drawing functions have been added to the Standard Library. To use the new functionality, include MQL5\Include\Graphics\Graphic.mqh to your project.

      Plotting a chart based on three data series using GraphPlot:
      #include <Graphics/Graphic.mqh>
      double Func1(double x) { return MathPow(x,2); }
      double Func2(double x) { return MathPow(x,3); }
      double Func3(double x) { return MathPow(x,4); }
      void OnStart()
      The result:

      Plotting a chart based on a data array using GraphPlot:
      #include <Math/Stat/Binomial.mqh>
      #include <Graphics/Graphic.mqh>
      void OnStart(void)
         double    vars[101];
         double    results[101];
         const int N=2000;
      The result:

    5. Updated functions for working with mathematical statistics in the Standard Library. We have thoroughly checked the quality and accuracy of all functions both in the MQL5 version and in the source R language. Unit tests are distributed along with the static library; the tests enable control over the accuracy and performance speed. They are available in the directory \MQL5\Scripts\UnitTests\Stat.

      • TestStat.mq5 — the main test script for checking calculation results
      • TestPrecision.mq5 — test of calculation precision
      • TestBenchmark.mq5 — the test includes computing performance measurement


    1. The updated version features advanced settings for configuring execution delays during testing. Now you can test your Expert Advisors in a variety of trading conditions, including the ideal case without a delay and any custom set delay.

      Only the random delay mode was available in earlier versions.

    2. Fixed generation of the tick volume of bars in the 'M1 based OHLC' mode.
    3. Fixed specification of order and position opening time up to milliseconds when trading in the hedging mode.
    4. Fixed "old tick" error, which could appear during multi-currency or multi-timeframe testing in the 'real ticks' mode.
    5. Improved CopyTicks performance speed when the requested ticks are read from a database located on a disk.


    1. The file context menu in the Navigator and in the toolbox now features commands for working with the versioned source code repository MQL5 Storage.

    2. Fixed an error that could occasionally break the integrity of the local MQL5 Storage database when working with more than 1024 files in the repository.
    3. Fixed display of the file tree of MQL5 Storage.
    4. Fixed file display after a mass text replacement.

    Updated documentation.

    24 November 2016
    MetaTrader 5 iOS build 1425
    • Improvements of the One Click Trading panel on the chart: it is now also available in the portrait mode; trade volume can be quickly changed by selecting a desired value from the list.

    • The chart symbol can now be changed by tapping on the symbol name in the window header.
    • Improvements in the app settings section: now it features information about the current account, properly arranged units, and improved designed.
    • Multiple improvements and fixes.
    14 October 2016
    MetaTrader 5 Build 1455: Libraries of mathematical functions in MQL5


    1. Added tooltips for the Buy, Sell and Close buttons in trade dialogs. The tooltips contain information about the security to be bought or sold during the operation, to help beginners understand the trading process.

    2. Added new icons of orders, deals and positions in the "Trading" and "History" tabs.

    3. The updated terminal provides optimized and much faster (up to 4-5 times) display and update of the Market Depth, of the tick chart in the Market Depth, and of the Time & Sales data.
    4. Fixed synchronization of tick history during non-trading hours. The process could consume an excessive amount of network traffic in some cases.


    1. An MQL5 version of the ALGLIB numerical analysis library has been included into the Standard Library.

      Library Features

      • Linear algebra
      • Systems of linear and nonlinear equations
      • Interpolation
      • Optimization
      • Fast Fourier transformation
      • Numerical integration
      • Linear and nonlinear least squares fitting
      • Ordinary differential equations
      • Special functions
      • Descriptive statistics and hypothesis testing
      • Data analysis - classification, regression
      • Implementing algorithms of linear algebra, interpolation, etc. in multiple-precision arithmetic (using MPFR)

      How to Use

      ALGLIB files are located in \MQL5\Include\Math\Alglib. To use the functions, add the main library file into your program:

      #include <Math\Alglib\alglib.mqh>

    2. Mathematical statistics functions have been included into the Standard Library. MQL5 now provides the functionality of the R language, which is one of the best tools for statistical data processing and analysis.

      Library Features

      The statistical library contains functions for calculating the statistical characteristics of data, as well as functions for operations with statistical distributions:

      • Functions for the calculation of statistical characteristics of array elements
      • Options for operations with statistical distributions: normal distribution, lognormal distribution, beta distribution, etc.

      How to Use

      The statistical library files are located in \MQL5\Include\Math\Stat. To use the library, add the file with required functions into your program, for example:

      #include <Math\Stat\Binomal.mqh>
      #include <Math\Stat\Cauchy.mqh>

      The detailed description of the library functions is available in the article Statistical Distributions in MQL5 - Taking the Best of R.

    3. The MQL5 version of the Fuzzy library has been included into the Standard Library. The Fuzzy library implements Mamdani and Sugeno fuzzy inference systems.

      Library Features

      • 13 membership functions
      • Flexible form for developing fuzzy system rules
      • Mamdani fuzzy inference system
      • Sugeno fuzzy inference system
      • 5 defuzzification method for Mamdani-type systems
      • Unlimited amount of input and output variables

      How to Use

      Fuzzy Library files are located in \MQL5\Include\Math\Fuzzy. To use the library, add the file with required functions into your program, for example:

      #include <Math\Fuzzy\mamdanifuzzysystem.mqh>
      #include <Math\Fuzzy\sugenofuzzysystem.mqh>

      A detailed description of the library is available in the Code Base: Fuzzy - library for developing fuzzy models

    4. New property CHART_QUICK_NAVIGATION allows enabling/disabling quick navigation bar in the chart. If you need to modify and access the property state, use the ChartSetInteger and ChartGetInteger functions.

      The navigation bar is opened by pressing Enter or Space. It allows you to quickly move to the specified date on the chart, as well as to switch symbols and timeframes. If your MQL5 program processes Enter or Space key pressing, disable the CHART_QUICK_NAVIGATION property, in order to avoid interception of these events by the terminal. The quick navigation bar can still be opened by a double click.

    5. New functions FileLoad and FileSave have been added. They provide an easy method to read and save arrays to files. Unlike FileRead* and FileWrite*, these functions do not require the indicator handle. FileLoad and FileSave operate with arrays of numeric types, as well as with simple structures that do not have strings, dynamic arrays or class objects.
      long  FileLoad(
         const string filename,      // [in] File name
         void         &buffer[],     // [out] An array to which the file is read
         uint         common_flag=0  // [in] 0 - search for the file in the Files folder of the terminal, FILE_COMMON - search in the common directory of terminals
      bool  FileSave(
         const string filename,      // [in] File name
         const void   &buffer[],     // [in] An array to which the file is saved
         uint         common_flag=0  // [in] 0 - create a file in the Files folder of the terminal, FILE_COMMON - create in the common directory of terminals
      An example of how to write ticks to a file and then read them:
      //--- input parameters
      input int      ticks_to_save=1000; // Number of ticks
      //| Script program start function                                    |
      void OnStart()
         string  filename=_Symbol+"_ticks.bin";
         MqlTick ticks[];
         int copied=CopyTicks(_Symbol,ticks,COPY_TICKS_ALL,0,ticks_to_save);
            PrintFormat(" CopyTicks(%s) copied %d ticks",_Symbol,copied);
            //--- If the tick history is synchronized, the error code is equal to zero
               PrintFormat("%s: Ticks are not synchronized. Error=",_Symbol,copied,_LastError);
            //---  Writing ticks to a file
               PrintFormat("FileSave() failed, error=%d",GetLastError());
            PrintFormat("Failed CopyTicks(%s), Error=",_Symbol,GetLastError());
      //--- Now reading the ticks back to the file
         long count=FileLoad(filename,ticks,FILE_COMMON);
            for(int i=0;i<count;i++)

    6. Modified display of custom indicators with the DRAW_CANDLES drawing mode. Now it is possible to set from one to three colors for this mode. The display of candlesticks depends on how many colors are set.

      If one color is specified, all candlesticks on the chart will be fully painted in this color.
      //--- Candlesticks painted in the same color 
      #property indicator_label1  "One color candles"
      #property indicator_type1   DRAW_CANDLES
      //--- Only one color is specified, so all candlesticks are the same color
      #property indicator_color1  clrGreen  
      If two colors are specified, one color is used for candlestick edges, the other one is used for the body.
      //--- The color of the candlesticks differs from the color of shadows
      #property indicator_label1  "Two color candles"
      #property indicator_type1   DRAW_CANDLES
      //--- Candlestick edges and shadows are green, body is white
      #property indicator_color1  clrGreen,clrWhite 
      If three colors are specified, one color is used for candlestick edges, two other colors are used for the bodies of bullish and bearish candlesticks.
      //--- The color of the candlesticks differs from the color of shadows
      #property indicator_label1  "One color candles"
      #property indicator_type1   DRAW_CANDLES
      //--- Candlestick edges and shadows are green, the body of a bullish candle is white, the body of a bearish candle is red
      #property indicator_color1  clrGreen,clrWhite,clrRed
      The DRAW_CANDLES style allows setting custom colors of candlesticks. All colors can also be changed dynamically while the indicator is running, using the function PlotIndexSetInteger(drawing_index_DRAW_CANDLES, PLOT_LINE_COLOR, modifier_number, color) where modifier_number can have the following values:
      • 0 – the color of edges and shadows
      • 1 – the color of the bullish candlestick body
      • 2 – the color of the bearish candlestick body
      //--- Setting the color of edges and shadows
      //--- Setting the color of the bullish candlestick body
      //--- Setting the color of the bearish candlestick body
    7. Fixed bugs and improved operation with the tick history using CopyTicks functions.
    8. Starting with the new build, operators can be used in interfaces (was not allowed before).


    1. Fixed an error that could lead to the repeated request to sign in to MQL5.community when buying products from the Market.


    1. Added UI translation into Greek, Malay and Hebrew.

    Updated documentation.

    29 September 2016
    MetaTrader 5 web platform: Code optimization and new interface features
    • Added the ability to re-size the web application blocks, including Market Watch and price chart windows.
    • Added the ability to sort by columns in Trade and History tabs of Toolbox window. The column width can be changed.
    • Added Details tab and the ability to quickly add a symbol.
    • Optimized the code to increase the overall web terminal operation speed. Account initialization, adding symbols and trading itself are now performed even faster.

    26 September 2016
    MetaTrader 5 iOS build 1403
    • Changed Trade section display — trading data representation now depends on the risk management system on a trading account: Retail Forex, Futures or Exchange model. 

    • Moved interface language selection to a separate menu item in the general settings.
    • Fixes and improvements.