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在客户端程序运行子系统时，执行一个MQL4程序发生了异外情况，其错误代码将被保存下来。对于每一个MQL4程序执行，存在一个特殊的last_error变量。在init()函数运行之前，last_error变量必须重置为零。如果在计算阶段或调用内置函数时发生错误，last_error变量会收到相应的错误代码。存储在这个变量中的值可以用GetLastError()函数访问，之后，last_error变量将重置为零。
这里罗列了直接导致程序立即停止运行的关键错误:
| 常数 |
值 |
描述 |
| ERR_WRONG_FUNCTION_POINTER |
4001 |
在调用内部函数时，发现错误的函数指针 |
| ERR_NO_MEMORY_FOR_CALL_STACK |
4003 |
在调用内部函数时，不能为函数调用堆栈再分配内存 |
| ERR_RECURSIVE_STACK_OVERFLOW |
4004 |
递归调用函数时，数据堆栈溢出 |
| ERR_NO_MEMORY_FOR_PARAM_STRING |
4006 |
在调用内部函数时，不能为作为函数参数的字符串分配内存 |
| ERR_NO_MEMORY_FOR_TEMP_STRING |
4007 |
不能为字符串操作分配临时缓冲区 |
| ERR_NO_MEMORY_FOR_ARRAYSTRING |
4010 |
赋值时，不能为数组中字符串重新分配内存 |
| ERR_TOO_LONG_STRING |
4011 |
赋值时，太长的字符串被送到服务缓冲区(不能再为服务缓冲区分配内存) |
| ERR_REMAINDER_FROM_ZERO_DIVIDE |
4012 |
余数除0错误 |
| ERR_ZERO_DIVIDE |
4013 |
除0 错误 |
| ERR_UNKNOWN_COMMAND |
4014 |
无效指令 |
如果在产生致命错误时程序停止了工作，这些错误代码可能被下次启动的程序用GetLastError()函数读取，也可被非初始化函数读取。在程序或非初始化函数开始运行之前，last_error变量不会归零。
这里罗列了调用导入函数时发生的致命错误，这些错误会引起智能交易或自定义指标立即停止启动函数的执行，直到用户重新初始化为止。
| 常数 |
值 |
描述 |
| ERR_CANNOT_LOAD_LIBRARY |
4018 |
调用导入函数时，载入DLL或EX4库发生错误 |
| ERR_CANNOT_CALL_FUNCTION |
4019 |
调用导入函数时，发现DLL或EX4库不包含被调用函数 |
| ERR_DLL_CALLS_NOT_ALLOWED |
4017 |
调用导入DLL函数时，发现禁止DLL导入 |
| ERR_EXTERNAL_CALLS_NOT_ALLOWED |
4020 |
调用导入EX4函数时，发现禁止导入外部EX4 |
其他错误不中断程序执行。
| 常数 |
值 |
描述 |
| ERR_ARRAY_INDEX_OUT_OF_RANGE |
4002 |
超界访问数组 |
| ERR_NOT_INITIALIZED_STRING |
4008 |
未初始化字符串；没有值赋给在表达式中充当操作数的字符串 |
| ERR_NOT_INITIALIZED_ARRAYSTRING |
4009 |
未初始化字符串数组；没有值赋给在表达式中充当操作数的字符串 |
| ERR_NO_MEMORY_FOR_RETURNED_STR |
4021 |
不能为函数返回的字符串重新分配内存 |
从不产生ERR_NO_MQLERROR (4000)代码。
这里罗列了可能只是由于软件或硬件故障而产生的许多错误。如果下列描述的错误反复出现，应与开发商联络。
| 常数 |
值 |
描述 |
| ERR_WRONG_FUNCTION_POINTER |
4001 |
在调用内部函数时，发现错误的函数指针 |
| ERR_UNKNOWN_COMMAND |
4014 |
无效指令 |
| ERR_NOT_INITIALIZED_ARRAY |
4016 |
未初始化数组 |
| ERR_INVALID_FUNCTION_PARAMSCNT |
4050 |
函数参数个数不正确 |
| ERR_STRING_FUNCTION_INTERNAL |
4052 |
字符串函数内部出错 |
| ERR_TRADE_ERROR |
4067 |
交易函数执行出错 |
| ERR_SOME_OBJECT_ERROR |
4207 |
对象函数出错 |
下面这些函数会经常的修改last_error变量的值（即使没有发生错误也可能会修改last_error变量的值）。
| 函数 |
错误代码 |
| AccountFreeMarginCheck |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_UNKNOWN_SYMBOL (4106), ERR_NOT_ENOUGH_MONEY (134) |
| OrderSend |
ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_PRICE_PARAM (4107), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), ERR_LONGS_NOT_ALLOWED (4110), ERR_SHORTS_NOT_ALLOWED (4111), 交易服务器返回的错误代码 |
| OrderClose |
ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_PRICE_PARAM (4107), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| OrderCloseBy |
ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| OrderDelete |
ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| OrderModify |
ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INVALID_PRICE_PARAM (4107), ERR_INVALID_TICKET (4108), ERR_UNKNOWN_SYMBOL (4106), ERR_TRADE_NOT_ALLOWED (4109), 交易服务器返回的错误代码 |
| GetLastError |
ERR_NO_ERROR (0) |
下面这些函数只有发生错误的时候才会修改last_error变量值。
| 函数 |
错误代码 |
| ArrayBsearch |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayCopy |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCOMPATIBLE_ARRAYS (4056), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayCopyRates |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCOMPATIBLE_ARRAYS (4056), ERR_STRING_PARAMETER_EXPECTED (4062), |
| ArrayCopySeries |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCORRECT_SERIESARRAY_USING (4054), ERR_INCOMPATIBLE_ARRAYS (4056), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_HISTORY_WILL_UPDATED (4066), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayDimension |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArrayGetAsSeries |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArrayInitialize |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayIsSeries |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArrayMaximum |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayMinimum |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayRange |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INTEGER_PARAMETER_EXPECTED (4063), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArrayResize |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| ArraySetAsSeries |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArraySize |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| ArraySort |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053), ERR_INCORRECT_SERIESARRAY_USING (4054), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileClose |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileDelete |
ERR_WRONG_FILE_NAME (4101), ERR_SOME_FILE_ERROR (4100) |
| FileFlush |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileIsEnding |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileIsLineEnding |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileOpen |
ERR_TOO_MANY_OPENED_FILES (4102), ERR_WRONG_FILE_NAME (4101), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_SOME_FILE_ERROR (4100), ERR_CANNOT_OPEN_FILE (4103) |
| FileOpenHistory |
ERR_TOO_MANY_OPENED_FILES (4102), ERR_WRONG_FILE_NAME (4101), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_SOME_FILE_ERROR (4100), ERR_CANNOT_OPEN_FILE (4103) |
| FileReadArray |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_ARRAY_ERROR (4053), ERR_SOME_FILE_ERROR (4100), ERR_END_OF_FILE (4099) |
| FileReadDouble |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_END_OF_FILE (4099) |
| FileReadInteger |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_END_OF_FILE (4099) |
| FileReadNumber |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), ERR_END_OF_FILE (4099) |
| FileReadString |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), ERR_TOO_LONG_STRING (4011), ERR_END_OF_FILE (4099) |
| FileSeek |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileSize |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileTell |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| FileWrite |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_SOME_FILE_ERROR (4100) |
| FileWriteDouble |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100) |
| FileWriteInteger |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100) |
| FileWriteString |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), ERR_STRING_PARAMETER_EXPECTED (4062) |
| FileWriteArray |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCOMPATIBLE_FILEACCESS (4104), ERR_SOME_FILE_ERROR (4100), |
| GlobalVariableCheck |
ERR_STRING_PARAMETER_EXPECTED (4062) |
| GlobalVariableDel |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLES_PROCESSING (4057) |
| GlobalVariableGet |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLE_NOT_FOUND (4058) |
| GlobalVariablesDeleteAll |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLES_PROCESSING (4057) |
| GlobalVariableSet |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLES_PROCESSING (4057), ERR_GLOBAL_VARIABLE_NOT_FOUND (4058) |
| GlobalVariableSetOnCondition |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_GLOBAL_VARIABLE_NOT_FOUND (4058) |
| iCustom |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| technical indicators, series access functions |
ERR_HISTORY_WILL_UPDATED (4066) |
| technical indicators OnArray |
ERR_ARRAY_AS_PARAMETER_EXPECTED (4065), ERR_SOME_ARRAY_ERROR (4053) |
| IndicatorBuffers |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| IndicatorDigits |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| IndicatorShortName |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MarketInfo |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_UNKNOWN_SYMBOL (4106), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MathArccos |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MathArcsin |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MathMod |
ERR_ZERO_DIVIDE (4013) |
| MathSqrt |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| MessageBox |
ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_STRING_PARAMETER_EXPECTED (4062) |
| ObjectCreate |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_UNKNOWN_OBJECT_TYPE (4203), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_OBJECT_ALREADY_EXISTS (4200), ERR_NO_SPECIFIED_SUBWINDOW (4206) |
| ObjectDelete |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectDescription |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectFind |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204) |
| ObjectGet |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectGetFiboDescription |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_TYPE (4203), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectGetShiftByValue |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_OBJECT_COORDINATES_ERROR (4205) |
| ObjectGetValueByShift |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_OBJECT_COORDINATES_ERROR (4205) |
| ObjectMove |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectName |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_ARRAY_INDEX_OUT_OF_RANGE (4002) |
| ObjectSet |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectSetText |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| ObjectSetFiboDescription |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_OBJECT_DOES_NOT_EXIST (4202), ERR_UNKNOWN_OBJECT_TYPE (4203), ERR_UNKNOWN_OBJECT_PROPERTY (4201) |
| ObjectType |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NO_OBJECT_NAME (4204), ERR_OBJECT_DOES_NOT_EXIST (4202) |
| OrderClosePrice |
ERR_NO_ORDER_SELECTED (4105) |
| OrderCloseTime |
ERR_NO_ORDER_SELECTED (4105) |
| OrderComment |
ERR_NO_ORDER_SELECTED (4105) |
| OrderCommission |
ERR_NO_ORDER_SELECTED (4105) |
| OrderExpiration |
ERR_NO_ORDER_SELECTED (4105) |
| OrderLots |
ERR_NO_ORDER_SELECTED (4105) |
| OrderMagicNumber |
ERR_NO_ORDER_SELECTED (4105) |
| OrderOpenPrice |
ERR_NO_ORDER_SELECTED (4105) |
| OrderOpenTime |
ERR_NO_ORDER_SELECTED (4105) |
| OrderPrint |
ERR_NO_ORDER_SELECTED (4105) |
| OrderProfit |
ERR_NO_ORDER_SELECTED (4105) |
| OrderStopLoss |
ERR_NO_ORDER_SELECTED (4105) |
| OrderSwap |
ERR_NO_ORDER_SELECTED (4105) |
| OrderSymbol |
ERR_NO_ORDER_SELECTED (4105) |
| OrderTakeProfit |
ERR_NO_ORDER_SELECTED (4105) |
| OrderTicket |
ERR_NO_ORDER_SELECTED (4105) |
| OrderType |
ERR_NO_ORDER_SELECTED (4105) |
| PlaySound |
ERR_WRONG_FILE_NAME (4101) |
| SendFTP |
ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_CUSTOM_INDICATOR_ERROR (4055), ERR_STRING_PARAMETER_EXPECTED (4062) |
| SendMail |
ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_FUNCTION_NOT_CONFIRMED (4060), ERR_SEND_MAIL_ERROR (4061) |
| SetIndexArrow |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexBuffer |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_INCORRECT_SERIESARRAY_USING (4054), ERR_INCOMPATIBLE_ARRAYS (4056) |
| SetIndexDrawBegin |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexEmptyValue |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexLabel |
ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_STRING_PARAMETER_EXPECTED (4062) |
| SetIndexShift |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetIndexStyle |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| SetLevelValue |
ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
| Sleep |
ERR_CUSTOM_INDICATOR_ERROR (4055) |
| StringFind |
ERR_STRING_PARAMETER_EXPECTED (4062) |
| StringGetChar |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NOT_INITIALIZED_STRING (4008), ERR_ARRAY_INDEX_OUT_OF_RANGE (4002) |
| StringLen |
ERR_STRING_PARAMETER_EXPECTED (4062) |
| StringSetChar |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_INVALID_FUNCTION_PARAMVALUE (4051), ERR_NOT_INITIALIZED_STRING (4008), ERR_TOO_LONG_STRING (4011), ERR_ARRAY_INDEX_OUT_OF_RANGE (4002) |
| StringSubstr |
ERR_STRING_PARAMETER_EXPECTED (4062), ERR_TOO_LONG_STRING (4011) |
| StringTrimLeft |
ERR_STRING_PARAMETER_EXPECTED (4062) |
| StringTrimRight |
ERR_STRING_PARAMETER_EXPECTED (4062) |
| WindowIsVisible |
ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059) |
| WindowFind |
ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NOT_INITIALIZED_STRING (4008) |
| WindowHandle |
ERR_FUNC_NOT_ALLOWED_IN_TESTING (4059), ERR_STRING_PARAMETER_EXPECTED (4062), ERR_NOT_INITIALIZED_STRING (4008) |
| WindowScreenShot |
ERR_WRONG_FILE_NAME (4101), ERR_INVALID_FUNCTION_PARAMVALUE (4051) |
下面的函数从不改变last_error变量值。
AccountBalance, AccountCompany, AccountCredit, AccountCurrency, AccountEquity, AccountFreeMargin, AccountLeverage, AccountMargin, AccountName, AccountNumber, AccountProfit, AccountServer, Alert, CharToStr, Comment, Day, DayOfWeek, DayOfYear, DoubleToStr, GetTickCount, HideTestIndicators, Hour, IndicatorCounted, IsConnected, IsDemo, IsDllsAllowed, IsExpertEnabled, IsLibrariesAllowed, IsOptimization, IsStopped, IsTesting, IsTradeAllowed, IsTradeContextBusy, IsVisualMode, MathAbs, MathArctan, MathCeil, MathCos, MathExp, MathFloor, MathLog, MathMax, MathMin, MathPow, MathRand, MathRound, MathSin, MathSrand, MathTan, Minute, Month, NormalizeDouble, ObjectsDeleteAll, ObjectsTotal, OrderSelect, OrdersHistoryTotal, Period, Print, RefreshRates, Seconds, SetLevelStyle, StringConcatenate, StrToTime, StrToDouble, Symbol, TerminalCompany, TerminalName, TerminalPath, TimeCurrent, TimeDay, TimeDayOfWeek, TimeDayOfYear, TimeHour, TimeLocal, TimeMinute, TimeMonth, TimeSeconds, TimeToStr, TimeYear, UninitializeReason, WindowBarsPerChart, WindowFirstVisibleBar, WindowPriceOnDropped, WindowRedraw, WindowTimeOnDropped, WindowsTotal, WindowOnDropped, WindowXOnDropped, WindowYOnDropped, Year
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