# List of MQL5 Functions

All MQL5 functions in alphabetical order.

| Function | Action | Section |
| --- | --- | --- |
| AccountInfoDouble | Returns a value of double type of the corresponding account property | Account Information |
| AccountInfoInteger | Returns a value of integer type (bool, int or long) of the corresponding account property | Account Information |
| AccountInfoString | Returns a value string type corresponding account property | Account Information |
| acos | Returns the arc cosine of x in radians | Math Functions |
| Alert | Displays a message in a separate window | Common Functions |
| ArrayBsearch | Searches for a specified value in a multidimensional numeric array sorted ascending | Array Functions |
| ArrayCompare | Returns the result of comparing two arrays of  simple types  or custom structures without  complex objects | Array Functions |
| ArrayCopy | Copies one array into another | Array Functions |
| ArrayFill | Fills an array with the specified value | Array Functions |
| ArrayFree | Frees up buffer of any dynamic array and sets the size of the zero dimension in 0. | Array Functions |
| ArrayGetAsSeries | Checks direction of array indexing | Array Functions |
| ArrayInitialize | Sets all elements of a numeric array into a single value | Array Functions |
| ArrayIsDynamic | Checks whether an array is dynamic | Array Functions |
| ArrayIsSeries | Checks whether an array is a timeseries | Array Functions |
| ArrayMaximum | Searches for the largest element in the first dimension of a multidimensional numeric array | Array Functions |
| ArrayMinimum | Searches for the lowest element in the first dimension of a multidimensional numeric array | Array Functions |
| ArrayRange | Returns the number of elements in the specified dimension of the array | Array Functions |
| ArrayResize | Sets the new size in the first dimension of the array | Array Functions |
| ArraySetAsSeries | Sets the direction of array indexing | Array Functions |
| ArraySize | Returns the number of elements in the array | Array Functions |
| ArraySort | Sorting of numeric arrays by the first dimension | Array Functions |
| ArrayPrint | Prints an array of a simple type or a simple structure into journal | Array Functions |
| ArrayInsert | Inserts the specified number of elements from a source array to a receiving one starting from a specified index | Array Functions |
| ArrayRemove | Removes the specified number of elements from the array starting with a specified index | Array Functions |
| ArrayReverse | Reverses the specified number of elements in the array starting with a specified index | Array Functions |
| ArraySwap | Swaps the contents of two dynamic arrays of the same type | Array Functions |
| asin | Returns the arc sine of x in radians | Math Functions |
| atan | Returns the arc tangent of x in radians | Math Functions |
| Bars | Returns the number of bars the history for a specified symbol and period | Timeseries and Indicators Access |
| BarsCalculated | Returns the number of calculated data in an indicator buffer or -1 in the case of error (data hasn't been calculated yet) | Timeseries and Indicators Access |
| CalendarCountryById | Get a country description by its ID | Economic Calendar |
| CalendarEventById | Get an event description by its ID | Economic Calendar |
| CalendarValueById | Get an event value description by its ID | Economic Calendar |
| CalendarCountries | Get the array of country names available in the calendar | Economic Calendar |
| CalendarEventByCountry | Get the array of descriptions of all events available in the calendar by a specified country code | Economic Calendar |
| CalendarEventByCurrency | Get the array of descriptions of all events available in the calendar by a specified currency | Economic Calendar |
| CalendarValueHistoryByEvent | Get the array of values for all events in a specified time range by an event ID | Economic Calendar |
| CalendarValueHistory | Get the array of values for all events in a specified time range with the ability to sort by country and/or currency | Economic Calendar |
| CalendarValueLastByEvent | Get the array of event values by its ID since the calendar database status with a specified change_id | Economic Calendar |
| CalendarValueLast | Get the array of values for all events with the ability to sort by country and/or currency since the calendar database status with a specified change_id | Economic Calendar |
| ceil | Returns integer numeric value closest from above | Math Functions |
| CharArrayToString | Converting symbol code (ansi) into one-symbol array | Conversion Functions |
| ChartApplyTemplate | Applies a specific template from a specified file to the chart | Chart Operations |
| ChartClose | Closes the specified chart | Chart Operations |
| ChartFirst | Returns the ID of the first chart of the client terminal | Chart Operations |
| ChartGetDouble | Returns the double value property of the specified chart | Chart Operations |
| ChartGetInteger | Returns the integer value property of the specified chart | Chart Operations |
| ChartGetString | Returns the string value property of the specified chart | Chart Operations |
| ChartID | Returns the ID of the current chart | Chart Operations |
| ChartIndicatorAdd | Adds an indicator with the specified handle into a specified chart window | Chart Operations |
| ChartIndicatorDelete | Removes an indicator with a specified name from the specified chart window | Chart Operations |
| ChartIndicatorGet | Returns the handle of the indicator with the specified short name in the specified chart window | Chart Operations |
| ChartIndicatorName | Returns the short name of the indicator by the number in the indicators list on the specified chart window | Chart Operations |
| ChartIndicatorsTotal | Returns the number of all indicators applied to the specified chart window. | Chart Operations |
| ChartNavigate | Performs shift of the specified chart by the specified number of bars relative to the specified position in the chart | Chart Operations |
| ChartNext | Returns the chart ID of the chart next to the specified one | Chart Operations |
| ChartOpen | Opens a new chart with the specified symbol and period | Chart Operations |
| CharToString | Converting a symbol code into a one-character string | Conversion Functions |
| ChartPeriod | Returns the period value of the specified chart | Chart Operations |
| ChartPriceOnDropped | Returns the price coordinate of the chart point, the Expert Advisor or script has been dropped to | Chart Operations |
| ChartRedraw | Calls a forced redrawing of a specified chart | Chart Operations |
| ChartSaveTemplate | Saves current chart settings in a template with a specified name | Chart Operations |
| ChartScreenShot | Provides a screenshot of the chart of its current state in a GIF, PNG or BMP format depending on specified extension | Chart Operations |
| ChartSetDouble | Sets the double value for a corresponding property of the specified chart | Chart Operations |
| ChartSetInteger | Sets the integer value (datetime, int, color, bool or char) for a corresponding property of the specified chart | Chart Operations |
| ChartSetString | Sets the string value for a corresponding property of the specified chart | Chart Operations |
| ChartSetSymbolPeriod | Changes the symbol value and a period of the specified chart | Chart Operations |
| ChartSymbol | Returns the symbol name of the specified chart | Chart Operations |
| ChartTimeOnDropped | Returns the time coordinate of the chart point, the Expert Advisor or script has been dropped to | Chart Operations |
| ChartTimePriceToXY | Converts the coordinates of a chart from the time/price representation to the X and Y coordinates | Chart Operations |
| ChartWindowFind | Returns the number of a subwindow where an indicator is drawn | Chart Operations |
| ChartWindowOnDropped | Returns the number (index) of the chart subwindow, the Expert Advisor or script has been dropped to | Chart Operations |
| ChartXOnDropped | Returns the X coordinate of the chart point, the Expert Advisor or script has been dropped to | Chart Operations |
| ChartXYToTimePrice | Converts the X and Y coordinates on a chart to the time and price values | Chart Operations |
| ChartYOnDropped | Returns the Y coordinate of the chart point, the Expert Advisor or script has been dropped to | Chart Operations |
| CheckPointer | Returns the type of the object pointer | Common Functions |
| CLBufferCreate | Creates an OpenCL buffer | Working with OpenCL |
| CLBufferFree | Deletes an OpenCL buffer | Working with OpenCL |
| CLBufferRead | Reads an OpenCL buffer into an array | Working with OpenCL |
| CLBufferWrite | Writes an array into an OpenCL buffer | Working with OpenCL |
| CLContextCreate | Creates an OpenCL context | Working with OpenCL |
| CLContextFree | Removes an OpenCL context | Working with OpenCL |
| CLExecute | Runs an OpenCL program | Working with OpenCL |
| CLGetDeviceInfo | Receives device property from OpenCL driver | Working with OpenCL |
| CLGetInfoInteger | Returns the value of an integer property for an OpenCL object or device | Working with OpenCL |
| CLHandleType | Returns the type of an OpenCL handle as a value of the ENUM_OPENCL_HANDLE_TYPE enumeration | Working with OpenCL |
| CLKernelCreate | Creates an OpenCL start function | Working with OpenCL |
| CLKernelFree | Removes an OpenCL start function | Working with OpenCL |
| CLProgramCreate | Creates an OpenCL program from a source code | Working with OpenCL |
| CLProgramFree | Removes an OpenCL program | Working with OpenCL |
| CLSetKernelArg | Sets a parameter for the OpenCL function | Working with OpenCL |
| CLSetKernelArgMem | Sets an OpenCL buffer as a parameter of the OpenCL function | Working with OpenCL |
| ColorToARGB | Converting color type to uint type to receive ARGB representation of the color. | Conversion Functions |
| ColorToString | Converting color value into string as "R,G,B" | Conversion Functions |
| Comment | Outputs a comment in the left top corner of the chart | Common Functions |
| CopyBuffer | Gets data of a specified buffer from a specified indicator into an array | Timeseries and Indicators Access |
| CopyClose | Gets history data on bar closing price for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyHigh | Gets history data on maximal bar price for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyLow | Gets history data on minimal bar price for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyOpen | Gets history data on bar opening price for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyRates | Gets history data of the  Rates  structure for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyRealVolume | Gets history data on trade volumes for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopySpread | Gets history data on spreads for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyTicks | Gets ticks accumulated by the terminal for the current working session into an array | Timeseries and Indicators Access |
| CopyTickVolume | Gets history data on tick volumes for a specified symbol and period into an array | Timeseries and Indicators Access |
| CopyTime | Gets history data on bar opening time for a specified symbol and period into an array | Timeseries and Indicators Access |
| cos | Returns the cosine of a number | Math Functions |
| CryptDecode | Performs the inverse transformation of the data from array | Common Functions |
| CryptEncode | Transforms the data from array with the specified method | Common Functions |
| CustomSymbolCreate | Create a custom symbol with the specified name in the specified group | Custom Symbols |
| CustomSymbolDelete | Delete a custom symbol with the specified name | Custom Symbols |
| CustomSymbolSetInteger | Set the integer type property value for a custom symbol | Custom Symbols |
| CustomSymbolSetDouble | Set the real type property value for a custom symbol | Custom Symbols |
| CustomSymbolSetString | Set the string type property value for a custom symbol | Custom Symbols |
| CustomSymbolSetMarginRate | Set the margin rates depending on the order type and direction for a custom symbol | Custom Symbols |
| CustomSymbolSetSessionQuote | Set the start and end time of the specified quotation session for the specified symbol and week day | Custom Symbols |
| CustomSymbolSetSessionTrade | Set the start and end time of the specified trading session for the specified symbol and week day | Custom Symbols |
| CustomRatesDelete | Delete all bars from the price history of the custom symbol in the specified time interval | Custom Symbols |
| CustomRatesReplace | Fully replace the price history of the custom symbol within the specified time interval with the data from the MqlRates type array | Custom Symbols |
| CustomRatesUpdate | Add missing bars to the custom symbol history and replace existing data with the ones from the MqlRates type array | Custom Symbols |
| 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 | Custom Symbols |
| CustomTicksDelete | Delete all ticks from the price history of the custom symbol in the specified time interval | Custom Symbols |
| CustomTicksReplace | Fully replace the price history of the custom symbol within the specified time interval with the data from the MqlTick type array | Custom Symbols |
| CustomBookAdd | Passes  the status of the Depth of Market for a custom symbol | Custom Symbols |
| DatabaseOpen | Opens or creates a database in a specified file | Working with databases |
| DatabaseClose | Closes a database | Working with databases |
| DatabaseImport | Imports data from a file into a table | Working with databases |
| DatabaseExport | Exports a table or an SQL request execution result to a CSV file | Working with databases |
| DatabasePrint | Prints a table or an SQL request execution result in the Experts journal | Working with databases |
| DatabaseTableExists | Checks the presence of the table in a database | Working with databases |
| DatabaseExecute | Executes a request to a specified database | Working with databases |
| DatabasePrepare | Creates a handle of a request, which can then be executed using DatabaseRead() | Working with databases |
| DatabaseReset | Resets a request, like after calling  DatabasePrepare() | Working with databases |
| DatabaseBind | Sets a parameter value in a request | Working with databases |
| DatabaseBindArray | Sets an array as a parameter value | Working with databases |
| DatabaseRead | Moves to the next entry as a result of a request | Working with databases |
| DatabaseReadBind | Moves to the next record and reads data into the structure from it | Working with databases |
| DatabaseFinalize | Removes a request created in DatabasePrepare() | Working with databases |
| DatabaseTransactionBegin | Starts transaction execution | Working with databases |
| DatabaseTransactionCommit | Completes transaction execution | Working with databases |
| DatabaseTransactionRollback | Rolls back transactions | Working with databases |
| DatabaseColumnsCount | Gets the number of fields in a request | Working with databases |
| DatabaseColumnName | Gets a field name by index | Working with databases |
| DatabaseColumnType | Gets a field type by index | Working with databases |
| DatabaseColumnSize | Gets a field size in bytes | Working with databases |
| DatabaseColumnText | Gets a field value as a string from the current record | Working with databases |
| DatabaseColumnInteger | Gets the int type value from the current record | Working with databases |
| DatabaseColumnLong | Gets the long type value from the current record | Working with databases |
| DatabaseColumnDouble | Gets the double type value from the current record | Working with databases |
| DatabaseColumnBlob | Gets a field value as an array from the current record | Working with databases |
| DebugBreak | Program breakpoint in debugging | Common Functions |
| Digits | Returns the number of decimal digits determining the accuracy of the price value of the current chart symbol | Checkup |
| DoubleToString | Converting a numeric value to a text line with a specified accuracy | Conversion Functions |
| DXContextCreate | Creates a graphic context for rendering frames of a specified size | Working with DirectX |
| DXContextSetSize | Changes a frame size of a graphic context created in DXContextCreate() | Working with DirectX |
| DXContextSetSize | Gets a frame size of a graphic context created in DXContextCreate() | Working with DirectX |
| DXContextClearColors | Sets a specified color to all pixels for the rendering buffer | Working with DirectX |
| DXContextClearDepth | Clears the depth buffer | Working with DirectX |
| DXContextGetColors | Gets an image of a specified size and offset from a graphic context | Working with DirectX |
| DXContextGetDepth | Gets the depth buffer of a rendered frame | Working with DirectX |
| DXBufferCreate | Creates a buffer of a specified type based on a data array | Working with DirectX |
| DXTextureCreate | Creates a 2D texture out of a rectangle of a specified size cut from a passed image | Working with DirectX |
| DXInputCreate | Creates shader inputs | Working with DirectX |
| DXInputSet | Sets shader inputs | Working with DirectX |
| DXShaderCreate | Creates a shader of a specified type | Working with DirectX |
| DXShaderSetLayout | Sets vertex layout for the vertex shader | Working with DirectX |
| DXShaderInputsSet | Sets shader inputs | Working with DirectX |
| DXShaderTexturesSet | Sets shader textures | Working with DirectX |
| DXDraw | Renders the vertices of the vertex buffer set in DXBufferSet() | Working with DirectX |
| DXDrawIndexed | Renders graphic primitives described by the index buffer from DXBufferSet() | Working with DirectX |
| DXPrimiveTopologySet | Sets the type of primitives for rendering using DXDrawIndexed() | Working with DirectX |
| DXBufferSet | Sets a buffer for the current rendering | Working with DirectX |
| DXShaderSet | Sets a shader for rendering | Working with DirectX |
| DXHandleType | Returns a handle type | Working with DirectX |
| DXRelease | Releases a handle | Working with DirectX |
| EnumToString | Converting an enumeration value of any type to string | Conversion Functions |
| EventChartCustom | Generates a custom event for the specified chart | Working with Events |
| EventKillTimer | Stops the generation of events by the timer in the current chart | Working with Events |
| EventSetMillisecondTimer | Launches event generator of the high-resolution timer with a period less than 1 second for the current chart | Working with Events |
| EventSetTimer | Starts the timer event generator with the specified periodicity for the current chart | Working with Events |
| exp | Returns exponent of a number | Math Functions |
| ExpertRemove | Stops Expert Advisor and unloads it from the chart | Common Functions |
| fabs | Returns absolute value (modulus) of the specified numeric value | Math Functions |
| FileClose | Closes a previously opened file | File Functions |
| FileCopy | Copies the original file from a local or shared folder to another file | File Functions |
| FileDelete | Deletes a specified file | File Functions |
| FileFindClose | Closes search handle | File Functions |
| FileFindFirst | Starts the search of files in a directory in accordance with the specified filter | File Functions |
| FileFindNext | Continues the search started by the FileFindFirst() function | File Functions |
| FileFlush | Writes to a disk all data remaining in the input/output file buffer | File Functions |
| FileGetInteger | Gets an integer property of a file | File Functions |
| FileIsEnding | Defines the end of a file in the process of reading | File Functions |
| FileIsExist | Checks the existence of a file | File Functions |
| FileIsLineEnding | Defines the end of a line in a text file in the process of reading | File Functions |
| FileMove | Moves or renames a file | File Functions |
| FileOpen | Opens a file with a specified name and flag | File Functions |
| FileReadArray | Reads arrays of any type except for string from the file of the BIN type | File Functions |
| FileReadBool | Reads from the file of the CSV type a string from the current position till a delimiter (or till the end of a text line) and converts the read string to a value of bool type | File Functions |
| FileReadDatetime | Reads from the file of the CSV type a string of one of the formats: "YYYY.MM.DD HH:MM:SS", "YYYY.MM.DD" or "HH:MM:SS" - and converts it into a datetime value | File Functions |
| FileReadDouble | Reads a double value from the current position of the file pointer | File Functions |
| FileReadFloat | Reads a float value from the current position of the file pointer | File Functions |
| FileReadInteger | Reads int, short or char value from the current position of the file pointer | File Functions |
| FileReadLong | Reads a long type value from the current position of the file pointer | File Functions |
| FileReadNumber | Reads from the file of the CSV type a string from the current position till a delimiter (or til the end of a text line) and converts the read string into double value | File Functions |
| FileReadString | Reads a string from the current position of a file pointer from a file | File Functions |
| FileReadStruct | Reads the contents from a binary file  into a structure passed as a parameter, from the current position of the file pointer | File Functions |
| FileSeek | Moves the position of the file pointer by a specified number of bytes relative to the specified position | File Functions |
| FileSize | Returns the size of a corresponding open file | File Functions |
| FileTell | Returns the current position of the file pointer of a corresponding open file | File Functions |
| FileWrite | Writes data to a file of CSV or TXT type | File Functions |
| FileWriteArray | Writes arrays of any type except for string into a file of BIN type | File Functions |
| FileWriteDouble | Writes value of the double type from the current position of a file pointer into a binary file | File Functions |
| FileWriteFloat | Writes value of the float type from the current position of a file pointer into a binary file | File Functions |
| FileWriteInteger | Writes value of the int type from the current position of a file pointer into a binary file | File Functions |
| FileWriteLong | Writes value of the long type from the current position of a file pointer into a binary file | File Functions |
| FileWriteString | Writes the value of a string parameter into a BIN or TXT file starting from the current position of the file pointer | File Functions |
| FileWriteStruct | Writes the contents of a structure passed as a parameter into a binary file, starting from the current position of the file pointer | File Functions |
| floor | Returns integer numeric value closest from below | Math Functions |
| fmax | Returns the maximal value of the two numeric values | Math Functions |
| fmin | Returns the minimal value of the two numeric values | Math Functions |
| fmod | Returns the real remainder after the division of two numbers | Math Functions |
| FolderClean | Deletes all files in the specified folder | File Functions |
| FolderCreate | Creates a folder in the Files directory | File Functions |
| FolderDelete | Removes a selected directory. If the folder is not empty, then it can't be removed | File Functions |
| FrameAdd | Adds a frame with data | Working with Optimization Results |
| FrameFilter | Sets the frame reading filter and moves the pointer to the beginning | Working with Optimization Results |
| FrameFirst | Moves a pointer of frame reading to the beginning and resets the previously set filter | Working with Optimization Results |
| FrameInputs | Receives  input parameters , on which the frame is formed | Working with Optimization Results |
| FrameNext | Reads a frame and moves the pointer to the next one | Working with Optimization Results |
| GetLastError | Returns the last error | Checkup |
| GetPointer | Returns the object  pointer | Common Functions |
| GetTickCount | Returns the number of milliseconds that have elapsed since the system was started | Common Functions |
| GlobalVariableCheck | Checks the existence of a global variable with the specified name | Global Variables of the Terminal |
| GlobalVariableDel | Deletes a global variable | Global Variables of the Terminal |
| GlobalVariableGet | Returns the value of a global variable | Global Variables of the Terminal |
| GlobalVariableName | Returns the name of a global variable by its ordinal number in the list of global variables | Global Variables of the Terminal |
| GlobalVariablesDeleteAll | Deletes global variables with the specified prefix in their names | Global Variables of the Terminal |
| GlobalVariableSet | Sets the new value to a global variable | Global Variables of the Terminal |
| GlobalVariableSetOnCondition | Sets the new value of the existing global variable by condition | Global Variables of the Terminal |
| GlobalVariablesFlush | Forcibly saves contents of all global variables to a disk | Global Variables of the Terminal |
| GlobalVariablesTotal | Returns the total number of global variables | Global Variables of the Terminal |
| GlobalVariableTemp | Sets the new value to a global variable, that exists only in the current session of the terminal | Global Variables of the Terminal |
| GlobalVariableTime | Returns time of the last accessing the global variable | Global Variables of the Terminal |
| HistoryDealGetDouble | Returns the requested property of a deal in the history (double) | Trade Functions |
| HistoryDealGetInteger | Returns the requested property of a deal in the history (datetime or int) | Trade Functions |
| HistoryDealGetString | Returns the requested property of a deal in the history (string) | Trade Functions |
| HistoryDealGetTicket | Returns a ticket of a corresponding deal in the history | Trade Functions |
| HistoryDealSelect | Selects a deal in the history for further calling it through appropriate functions | Trade Functions |
| HistoryDealsTotal | Returns the number of deals in the history | Trade Functions |
| HistoryOrderGetDouble | Returns the requested property of an order in the history (double) | Trade Functions |
| HistoryOrderGetInteger | Returns the requested property of an order in the history (datetime or int) | Trade Functions |
| HistoryOrderGetString | Returns the requested property of an order in the history (string) | Trade Functions |
| HistoryOrderGetTicket | Return order ticket of a corresponding order in the history | Trade Functions |
| HistoryOrderSelect | Selects an order in the history for further working with it | Trade Functions |
| HistoryOrdersTotal | Returns the number of orders in the history | Trade Functions |
| HistorySelect | Retrieves the history of transactions and orders for the specified period of the server time | Trade Functions |
| HistorySelectByPosition | Requests the history of deals with a specified  position identifier . | Trade Functions |
| iBars | Returns the number of bars of a corresponding symbol and period, available in history | Timeseries and Indicators Access |
| iBarShift | Returns the index of the bar corresponding to the specified time | Timeseries and Indicators Access |
| iClose | Returns the Close price of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iHigh | Returns the High price of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iHighest | Returns the index of the highest value found on the corresponding chart (shift relative to the current bar) | Timeseries and Indicators Access |
| iLow | Returns the Low price of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iLowest | Returns the index of the smallest value found on the corresponding chart (shift relative to the current bar) | Timeseries and Indicators Access |
| iOpen | Returns the Open price of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iTime | Returns the opening time of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iTickVolume | Returns the tick volume of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iRealVolume | Returns the real volume of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iVolume | Returns the tick volume of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iSpread | Returns the spread value of the bar (indicated by the 'shift' parameter) on the corresponding chart | Timeseries and Indicators Access |
| iAD | Accumulation/Distribution | Technical Indicators |
| iADX | Average Directional Index | Technical Indicators |
| iADXWilder | Average Directional Index by Welles Wilder | Technical Indicators |
| iAlligator | Alligator | Technical Indicators |
| iAMA | Adaptive Moving Average | Technical Indicators |
| iAO | Awesome Oscillator | Technical Indicators |
| iATR | Average True Range | Technical Indicators |
| iBands | Bollinger Bands® | Technical Indicators |
| iBearsPower | Bears Power | Technical Indicators |
| iBullsPower | Bulls Power | Technical Indicators |
| iBWMFI | Market Facilitation Index by Bill Williams | Technical Indicators |
| iCCI | Commodity Channel Index | Technical Indicators |
| iChaikin | Chaikin Oscillator | Technical Indicators |
| iCustom | Custom indicator | Technical Indicators |
| iDEMA | Double Exponential Moving Average | Technical Indicators |
| iDeMarker | DeMarker | Technical Indicators |
| iEnvelopes | Envelopes | Technical Indicators |
| iForce | Force Index | Technical Indicators |
| iFractals | Fractals | Technical Indicators |
| iFrAMA | Fractal Adaptive Moving Average | Technical Indicators |
| iGator | Gator Oscillator | Technical Indicators |
| iIchimoku | Ichimoku Kinko Hyo | Technical Indicators |
| iMA | Moving Average | Technical Indicators |
| iMACD | Moving Averages Convergence-Divergence | Technical Indicators |
| iMFI | Money Flow Index | Technical Indicators |
| iMomentum | Momentum | Technical Indicators |
| IndicatorCreate | Returns the handle to the specified technical indicator created by an array of  MqlParam  type parameters | Timeseries and Indicators Access |
| IndicatorParameters | Based on the specified handle, returns the number of input parameters of the indicator, as well as the values and types of the parameters | Timeseries and Indicators Access |
| IndicatorRelease | Removes an indicator handle and releases the calculation block of the indicator, if it's not used by anyone else | Timeseries and Indicators Access |
| IndicatorSetDouble | Sets the value of an indicator property of the  double  type | Custom Indicators |
| IndicatorSetInteger | Sets the value of an indicator property of the  int  type | Custom Indicators |
| IndicatorSetString | Sets the value of an indicator property of the  string  type | Custom Indicators |
| IntegerToString | Converting int into a string of preset length | Conversion Functions |
| iOBV | On Balance Volume | Technical Indicators |
| iOsMA | Moving Average of Oscillator (MACD histogram) | Technical Indicators |
| iRSI | Relative Strength Index | Technical Indicators |
| iRVI | Relative Vigor Index | Technical Indicators |
| iSAR | Parabolic Stop And Reverse System | Technical Indicators |
| IsStopped | Returns true, if an mql5 program has been commanded to stop its operation | Checkup |
| iStdDev | Standard Deviation | Technical Indicators |
| iStochastic | Stochastic Oscillator | Technical Indicators |
| iTEMA | Triple Exponential Moving Average | Technical Indicators |
| iTriX | Triple Exponential Moving Averages Oscillator | Technical Indicators |
| iVIDyA | Variable Index Dynamic Average | Technical Indicators |
| iVolumes | Volumes | Technical Indicators |
| iWPR | Williams' Percent Range | Technical Indicators |
| log | Returns natural logarithm | Math Functions |
| log10 | Returns the logarithm of a number by base 10 | Math Functions |
| MarketBookAdd | Provides opening of Depth of Market for a selected symbol, and subscribes for receiving notifications of the DOM changes | Market Info |
| MarketBookGet | Returns a structure array  MqlBookInfo  containing records of the Depth of Market of a specified symbol | Market Info |
| MarketBookRelease | Provides closing of Depth of Market for a selected symbol, and cancels the subscription for receiving notifications of the DOM changes | Market Info |
| MathAbs | Returns absolute value (modulus) of the specified numeric value | Math Functions |
| MathArccos | Returns the arc cosine of x in radians | Math Functions |
| MathArcsin | Returns the arc sine of x in radians | Math Functions |
| MathArctan | Returns the arc tangent of x in radians | Math Functions |
| MathCeil | Returns integer numeric value closest from above | Math Functions |
| MathCos | Returns the cosine of a number | Math Functions |
| MathExp | Returns exponent of a number | Math Functions |
| MathFloor | Returns integer numeric value closest from below | Math Functions |
| MathIsValidNumber | Checks the correctness of a real number | Math Functions |
| MathLog | Returns natural logarithm | Math Functions |
| MathLog10 | Returns the logarithm of a number by base 10 | Math Functions |
| MathMax | Returns the maximal value of the two numeric values | Math Functions |
| MathMin | Returns the minimal value of the two numeric values | Math Functions |
| MathMod | Returns the real remainder after the division of two numbers | Math Functions |
| MathPow | Raises the base to the specified power | Math Functions |
| MathRand | Returns a pseudorandom value within the range of 0 to 32767 | Math Functions |
| MathRound | Rounds of a value to the nearest integer | Math Functions |
| MathSin | Returns the sine of a number | Math Functions |
| MathSqrt | Returns a square root | Math Functions |
| MathSrand | Sets the starting point for generating a series of pseudorandom integers | Math Functions |
| MathTan | Returns the tangent of a number | Math Functions |
| MessageBox | Creates, displays a message box and manages it | Common Functions |
| MQLInfoInteger | Returns an integer value of a corresponding property of a running mql5 program | Checkup |
| MQLInfoString | Returns a string value of a corresponding property of a running mql5 program | Checkup |
| MT5Initialize | Establish a connection with the MetaTrader 5 terminal | MetaTrader for Python |
| MT5Shutdown | Close the previously established connection to the MetaTrader 5 terminal | MetaTrader for Python |
| MT5TerminalInfo | Get status and parameters of the connected MetaTrader 5 terminal | MetaTrader for Python |
| MT5Version | Return the MetaTrader 5 terminal version | MetaTrader for Python |
| MT5CopyRatesFrom | Get bars from the MetaTrader 5 terminal starting from the specified date | MetaTrader for Python |
| MT5CopyRatesFromPos | Get bars from the MetaTrader 5 terminal starting from the specified index | MetaTrader for Python |
| MT5CopyRatesRange | Get bars in the specified date range from the MetaTrader 5 terminal | MetaTrader for Python |
| MT5CopyTicksFrom | Get ticks from the MetaTrader 5 terminal starting from the specified date | MetaTrader for Python |
| MT5CopyTicksRange | Get ticks for the specified date range from the MetaTrader 5 terminal | MetaTrader for Python |
| NormalizeDouble | Rounding of a floating point number to a specified accuracy | Conversion Functions |
| ObjectCreate | Creates an object of the specified type in a specified chart | Object Functions |
| ObjectDelete | Removes the object with the specified name from the specified chart (from the specified chart subwindow) | Object Functions |
| ObjectFind | Searches for an object with the specified ID by the name | Object Functions |
| ObjectGetDouble | Returns the double value of the corresponding object property | Object Functions |
| ObjectGetInteger | Returns the integer value of the corresponding object property | Object Functions |
| ObjectGetString | Returns the string value of the corresponding object property | Object Functions |
| ObjectGetTimeByValue | Returns the time value for the specified object price value | Object Functions |
| ObjectGetValueByTime | Returns the price value of an object for the specified time | Object Functions |
| ObjectMove | Changes the coordinates of the specified object anchor point | Object Functions |
| ObjectName | Returns the name of an object of the corresponding type in the specified chart (specified chart subwindow) | Object Functions |
| ObjectsDeleteAll | Removes all objects of the specified type from the specified chart (from the specified chart subwindow) | Object Functions |
| ObjectSetDouble | Sets the value of the corresponding object property | Object Functions |
| ObjectSetInteger | Sets the value of the corresponding object property | Object Functions |
| ObjectSetString | Sets the value of the corresponding object property | Object Functions |
| ObjectsTotal | Returns the number of objects of the specified type in the specified chart (specified chart subwindow) | Object Functions |
| OnStart | The function is called when the  Start  event occurs to perform actions set in the script | Event Handling |
| OnInit | The function is called in indicators and EAs when the  Init  event occurs to initialize a launched MQL5 program | Event Handling |
| OnDeinit | The function is called in indicators and EAs when the  Deinit  event occurs to de-initialize a launched MQL5 program | Event Handling |
| OnTick | The function is called in EAs when the  NewTick  event occurs to handle a new quote | Event Handling |
| OnCalculate | The function is called in indicators when the  Calculate  event occurs to handle price data changes | Event Handling |
| OnTimer | The function is called in indicators and EAs during the  Timer  periodic event generated by the terminal at fixed time intervals | Event Handling |
| OnTrade | The function is called in EAs during the  Trade  event generated at the end of a trading operation on a trade server | Event Handling |
| OnTradeTransaction | The function is called in EAs when the  TradeTransaction  event occurs to process a trade request execution results | Event Handling |
| OnBookEvent | The function is called in EAs when the  BookEvent  event occurs to process changes in the market depth | Event Handling |
| OnChartEvent | The function is called in indicators and EAs when the  ChartEvent  event occurs to process chart changes made by a user or an MQL5 program | Event Handling |
| OnTester | The function is called in EAs when the  Tester  event occurs to perform necessary actions after testing an EA on history data | Event Handling |
| OnTesterInit | The function is called in EAs when the  TesterInit  event occurs to perform necessary actions before optimization in the strategy tester | Event Handling |
| OnTesterDeinit | The function is called in EAs when the  TesterDeinit  event occurs after EA optimization in the strategy tester | Event Handling |
| OnTesterPass | The function is called in EAs when the  TesterPass  even occurs to handle an arrival of a new data frame during EA optimization in the strategy tester | Event Handling |
| OrderCalcMargin | Calculates the margin required for the specified order type, in the deposit currency | Trade Functions |
| OrderCalcProfit | Calculates the profit based on the parameters passed, in the deposit currency | Trade Functions |
| OrderCheck | Checks if there are enough funds to execute the required  trade operation . | Trade Functions |
| OrderGetDouble | Returns the requested property of the order (double) | Trade Functions |
| OrderGetInteger | Returns the requested property of the order (datetime or int) | Trade Functions |
| OrderGetString | Returns the requested property of the order (string) | Trade Functions |
| OrderGetTicket | Return the ticket of a corresponding order | Trade Functions |
| OrderSelect | Selects a order for further working with it | Trade Functions |
| OrderSend | Sends  trade requests  to a server | Trade Functions |
| OrderSendAsync | Asynchronously sends  trade requests  without waiting for the trade response of the trade server | Trade Functions |
| OrdersTotal | Returns the number of orders | Trade Functions |
| ParameterGetRange | Receives data on the values range and the change step for an  input variable  when optimizing an Expert Advisor in the Strategy Tester | Working with Optimization Results |
| ParameterSetRange | Specifies the use of  input variable  when optimizing an Expert Advisor in the Strategy Tester: value, change step, initial and final values | Working with Optimization Results |
| Period | Returns the current chart timeframe | Checkup |
| PeriodSeconds | Returns the number of seconds in the period | Common Functions |
| PlaySound | Plays a sound file | Common Functions |
| PlotIndexGetInteger | Returns the value of an indicator line property of the  integer  type | Custom Indicators |
| PlotIndexSetDouble | Sets the value of an indicator line property of the type  double | Custom Indicators |
| PlotIndexSetInteger | Sets the value of an indicator line property of the  int  type | Custom Indicators |
| PlotIndexSetString | Sets the value of an indicator line property of the  string  type | Custom Indicators |
| Point | Returns the point size of the current symbol in the quote currency | Checkup |
| PositionGetDouble | Returns the requested property of an open position (double) | Trade Functions |
| PositionGetInteger | Returns the requested property of an open position (datetime or int) | Trade Functions |
| PositionGetString | Returns the requested property of an open position (string) | Trade Functions |
| PositionGetSymbol | Returns the symbol corresponding to the open position | Trade Functions |
| PositionGetTicket | Returns the ticket of the position with the specified index in the list of open positions | Trade Functions |
| PositionSelect | Chooses an open position for further working with it | Trade Functions |
| PositionSelectByTicket | Selects a position to work with by the ticket number specified in it | Trade Functions |
| PositionsTotal | Returns the number of open positions | Trade Functions |
| pow | Raises the base to the specified power | Math Functions |
| Print | Displays a message in the log | Common Functions |
| PrintFormat | Formats and prints the sets of symbols and values in a log file in accordance with a preset format | Common Functions |
| rand | Returns a pseudorandom value within the range of 0 to 32767 | Math Functions |
| ResetLastError | Sets the value of a predetermined variable  _LastError  to zero | Common Functions |
| ResourceCreate | Creates an image resource based on a data set | Common Functions |
| ResourceFree | Deletes  dynamically created resource  (freeing the memory allocated for it) | Common Functions |
| ResourceReadImage | Reads data from the graphical resource  created by ResourceCreate() function  or  saved in EX5 file during compilation | Common Functions |
| ResourceSave | Saves a resource into the specified file | Common Functions |
| round | Rounds of a value to the nearest integer | Math Functions |
| SendFTP | Sends a file at the address specified in the settings window of the "FTP" tab | Common Functions |
| SendMail | Sends an email at the address specified in the settings window of the "Email" tab | Common Functions |
| SendNotification | Sends push notifications to mobile terminals, whose MetaQuotes ID are specified in the "Notifications" tab | Common Functions |
| SeriesInfoInteger | Returns information about the state of historical data | Timeseries and Indicators Access |
| SetIndexBuffer | Binds the specified indicator buffer with one-dimensional dynamic  array  of the  double  type | Custom Indicators |
| ShortArrayToString | Copying array part into a string | Conversion Functions |
| ShortToString | Converting symbol code (unicode) into one-symbol string | Conversion Functions |
| SignalBaseGetDouble | Returns the value of double type property for selected signal | Trade Signals |
| SignalBaseGetInteger | Returns the value of integer type property for selected signal | Trade Signals |
| SignalBaseGetString | Returns the value of string type property for selected signal | Trade Signals |
| SignalBaseSelect | Selects a signal from signals, available in terminal for further working with it | Trade Signals |
| SignalBaseTotal | Returns the total amount of signals, available in terminal | Trade Signals |
| SignalInfoGetDouble | Returns the value of double type property of signal copy settings | Trade Signals |
| SignalInfoGetInteger | Returns the value of integer type property of signal copy settings | Trade Signals |
| SignalInfoGetString | Returns the value of string type property of signal copy settings | Trade Signals |
| SignalInfoSetDouble | Sets the value of double type property of signal copy settings | Trade Signals |
| SignalInfoSetInteger | Sets the value of integer type property of signal copy settings | Trade Signals |
| SignalSubscribe | Subscribes to the trading signal | Trade Signals |
| SignalUnsubscribe | Cancels subscription | Trade Signals |
| sin | Returns the sine of a number | Math Functions |
| Sleep | Suspends execution of the current Expert Advisor or script within a specified interval | Common Functions |
| SocketCreate | Create a socket with specified flags and return its handle | Network Functions |
| SocketClose | Close a socket | Network Functions |
| SocketConnect | Connect to the server with timeout control | Network Functions |
| SocketIsConnected | Checks if the socket is currently connected | Network Functions |
| SocketIsReadable | Get a number of bytes that can be read from a socket | Network Functions |
| SocketIsWritable | Check whether data can be written to a socket at the current time | Network Functions |
| SocketTimeouts | Set timeouts for receiving and sending data for a socket system object | Network Functions |
| SocketRead | Read data from a socket | Network Functions |
| SocketSend | Write data to a socket | Network Functions |
| SocketTlsHandshake | Initiate secure TLS (SSL) connection to a specified host via TLS Handshake protocol | Network Functions |
| SocketTlsCertificate | Get data on the certificate used to secure network connection | Network Functions |
| SocketTlsRead | Read data from secure TLS connection | Network Functions |
| SocketTlsReadAvailable | Read all available data from secure TLS connection | Network Functions |
| SocketTlsSend | Send data via secure TLS connection | Network Functions |
| sqrt | Returns a square root | Math Functions |
| srand | Sets the starting point for generating a series of pseudorandom integers | Math Functions |
| StringAdd | Adds a string to the end of another string | String Functions |
| StringBufferLen | Returns the size of buffer allocated for the string | String Functions |
| StringCompare | Compares two strings and returns 1 if the first string is greater than the second; 0 - if the strings are equal; -1 (minus 1) - if the first string is less than the second one | String Functions |
| StringConcatenate | Forms a string of parameters passed | String Functions |
| StringFill | Fills out a specified string by selected symbols | String Functions |
| StringFind | Search for a substring in a string | String Functions |
| StringFormat | Converting number into string according to preset format | Conversion Functions |
| StringGetCharacter | Returns the value of a number located in the specified string position | String Functions |
| StringInit | Initializes string by specified symbols and provides the specified string length | String Functions |
| StringLen | Returns the number of symbols in a string | String Functions |
| StringReplace | Replaces all the found substrings of a string by a set sequence of symbols | String Functions |
| StringSetCharacter | Returns a copy of a string with a changed value of a symbol in a specified position | String Functions |
| StringSplit | Gets substrings by a specified separator from the specified string, returns the number of substrings obtained | String Functions |
| StringSubstr | Extracts a substring from a text string starting from a specified position | String Functions |
| StringToCharArray | Symbol-wise copying a string converted from Unicode to ANSI, to a selected place of array of uchar type | Conversion Functions |
| StringToColor | Converting "R,G,B" string or string with color name into color type value | Conversion Functions |
| StringToDouble | Converting a string containing a symbol representation of number into number of double type | Conversion Functions |
| StringToInteger | Converting a string containing a symbol representation of number into number of int type | Conversion Functions |
| StringToLower | Transforms all symbols of a selected string to lowercase | String Functions |
| StringToShortArray | Symbol-wise copying a string to a selected part of array of ushort type | Conversion Functions |
| StringToTime | Converting a string containing time or date in "yyyy.mm.dd [hh:mi]" format into datetime type | Conversion Functions |
| StringToUpper | Transforms all symbols of a selected string into capitals | String Functions |
| StringTrimLeft | Cuts line feed characters, spaces and tabs in the left part of the string | String Functions |
| StringTrimRight | Cuts line feed characters, spaces and tabs in the right part of the string | String Functions |
| StructToTime | Converts a variable of MqlDateTime structure type into a datetime value | Date and Time |
| Symbol | Returns the name of a symbol of the current chart | Checkup |
| SymbolInfoDouble | Returns the double value of the symbol for the corresponding property | Market Info |
| SymbolInfoInteger | Returns a value of an integer type (long, datetime, int or bool) of a specified symbol for the corresponding property | Market Info |
| SymbolInfoMarginRate | Returns the margin rates depending on the order type and direction | Market Info |
| SymbolInfoSessionQuote | Allows receiving time of beginning and end of the specified quoting sessions for a specified symbol and day of week. | Market Info |
| SymbolInfoSessionTrade | Allows receiving time of beginning and end of the specified trading sessions for a specified symbol and day of week. | Market Info |
| SymbolInfoString | Returns a value of the string type of a specified symbol for the corresponding property | Market Info |
| SymbolInfoTick | Returns the current prices for the specified symbol in a variable of the  MqlTick  type | Market Info |
| SymbolIsSynchronized | Checks whether data of a selected symbol in the terminal are  synchronized  with data on the trade server | Market Info |
| SymbolName | Returns the name of a specified symbol | Market Info |
| SymbolSelect | Selects a symbol in the Market Watch window or removes a symbol from the window | Market Info |
| SymbolsTotal | Returns the number of available (selected in Market Watch or all) symbols | Market Info |
| tan | Returns the tangent of a number | Math Functions |
| TerminalClose | Commands the terminal to complete operation | Common Functions |
| TerminalInfoDouble | Returns an double value of a corresponding property of the mql5 program environment | Checkup |
| TerminalInfoInteger | Returns an integer value of a corresponding property of the mql5 program environment | Checkup |
| TerminalInfoString | Returns a string value of a corresponding property of the mql5 program environment | Checkup |
| TesterStatistics | It returns the value of a specified statistic calculated based on testing results | Common Functions |
| TextGetSize | Returns the string's width and height at the current  font settings | Object Functions |
| TextOut | Transfers the text to the custom array (buffer) designed for creation of a graphical  resource | Object Functions |
| TextSetFont | Sets the font for displaying the text using drawing methods (Arial 20 used by default) | Object Functions |
| TimeCurrent | Returns the last known server time (time of the last quote receipt) in the datetime format | Date and Time |
| TimeDaylightSavings | Returns the sign of Daylight Saving Time switch | Date and Time |
| TimeGMT | Returns GMT in datetime format with the Daylight Saving Time by local time of the computer, where the client terminal is running | Date and Time |
| TimeGMTOffset | Returns the current difference between GMT time and the local computer time in seconds, taking into account DST switch | Date and Time |
| TimeLocal | Returns the local computer time in datetime format | Date and Time |
| TimeToString | Converting a value containing time in seconds elapsed since 01.01.1970 into a string of "yyyy.mm.dd hh:mi" format | Conversion Functions |
| TimeToStruct | Converts a datetime value into a variable of MqlDateTime structure type | Date and Time |
| TimeTradeServer | Returns the current calculation time of the trade server | Date and Time |
| UninitializeReason | Returns the code of the reason for deinitialization | Checkup |
| WebRequest | Sends HTTP request to the specified server | Common Functions |
| ZeroMemory | Resets a variable passed to it by reference. The variable can be of any type, except for classes and structures that have constructors. | Common Functions |