外_匯_邦 WaiHuiBang.com
語法 [Syntax]
代碼格式
空格建、Tab鍵、換行鍵和換頁符都可以成為代碼排版的分隔符，你能使用各種符號來增加代碼的可讀性。www.emoneybtc.com
注釋
多行注釋使用 /* 作為開始到 */ 結束，在這之間不能夠嵌套。單行注釋使用 // 作為開始到新的一行結束，可以被嵌套到多行注釋之中。
示例:
// 單行注釋
/* 多行注釋
// 嵌套的單行注釋
注釋結束 */
標識符
標識符用來給變量、函數和數據類型進行命名，長度不能超過31個字節
你可以使用數字0-9、拉丁字母大寫A-Z和小寫a-z(大小寫有區分的)還有下劃線(_)。此外首字母不可以是數字，標識符不能和保留字沖突.
示例:
// NAME1 namel Total_5 Paper
保留字
下面列出的是固定的保留字。不能使用以下任何保留字進行命名。
數據類型 存儲類型 操作符 其它
bool extern break false
color static case true
datetime continue
double default
int else
string for
void if
return
switch
while
數據類型 [Data types]
數據類型概述
主要數據類型有:
• Integer (int)
• Boolean (bool)
• ëèòåðàëû (char)
• String (string)
• Floating-point number (double)
• Color (color)
• Datetime (datetime)
我們用Integer類型數據來作為DateTime和Color數據的存儲。
使用以下方式可以進行類型站換:
int (bool,color,datetime);
double;
string;
Integer 類型
十進制: 數字0-9;0不能作為第一個字母
示例:
12, 111, -956 1007
十六進制: 數字0-9;拉丁字母a-f或A-F用來表示10-15;使用0x或者0X作為開始。
示例:
0x0A, 0x12, 0X12, 0x2f, 0xA3, 0Xa3, 0X7C7
Integer 變量的取值范圍為-2147483648到2147483647。
Literal 類型
任意在單引號中的字符或十六進制的任意ASCII碼例如'x10'都是被看作為一個字符，
一些字符例如單引號('),雙引號("),問號(?),反斜槓()和一些控制符都需要在之前加一個反斜槓()進行轉意後表示出來：
line feed NL (LF) n
horizontal tab HT t
carriage return CR r
reverse slash \
single quote ' '
double quote " "
hexadecimal ASCII-code hh xhh
以上字符如果不經過反斜槓進行轉意將不能被使用
示例:
int a = 'A';
int b = '$';
int c = '©'; // code 0xA9
int d = 'xAE'; // symbol code ®
Boolean 類型
Boolean 用來表示 是 和 否, 還可以用數字 1 和 0 進行表示。True和Flase可以忽略大小寫。
示例:
bool a = true;
bool b = false;
bool c = 1;
Floating-point number 類型
浮點型變量在整數型後面加一個點(.)用來更精確的表示十進制數字。
示例:
double a = 12.111;
double b = -956.1007;
double c = 0.0001;
double d = 16;
浮點型的取值范圍從 2.2e-308 到 1.8e308.
String 類型
字符串型是用來表示連續的ASCII碼字符的使用連續的兩個雙引號來包括需要表示的內容如："Character constant".
示例:
"This is a character string"
"Copyright symbol txA9"
"this line with LF symbol n"
"A" "1234567890" "0" "$"
Color 類型
顏色類型可以使用以下示例裡的幾種方式進行定義。
示例:
// symbol constants
C'128,128,128' // gray
C'0x00,0x00,0xFF' // blue
// named color
Red
Yellow
Black
// integer-valued representation
0xFFFFFF // white
16777215 // white
0x008000 // green
32768 // green
Datetime 類型
時間類型使用年、月、日、時、分、秒來進行定義，你可以使用以下示例中的方式來定義變量。
示例:
D'2004.01.01 00:00' // New Year
D'1980.07.19 12:30:27'
D'19.07.1980 12:30:27'
D'19.07.1980 12' //equal to D'1980.07.19 12:00:00'
D'01.01.2004' //equal to D'01.01.2004 00:00:00'
D'12:30:27' //equal to D'[compilation date] 12:30:27'
D'' //equal to D'[compilation date] 00:00:00'
運算符和表達式 [Operations & Expressions]
表達式
一個表達式可以擁有多個字符和操作符，一個表達式可以寫在幾行裡面。
示例:
a++; b = 10; x = (y*z)/w;
注:分號(;)是表達式的結束符。
算術運算符
Sum of values i = j + 2;
Difference of values i = j - 3;
Changing the operation sign x = - x;
Product of values z = 3 * x;
Division quotient i = j / 5;
Division remainder minutes = time % 60;
Adding 1 to the variable value i++;
Subtracting 1 from the variable value k--;
加減1的運算符不能被嵌套在表達式中
int a=3;
a++; // 可行的表達式
int b=(a++)*3; // 不可行的表達式
賦值運算符
注:將右側的結果賦值給左側的變量
將x的值賦值給y y = x;
將x的值加到y上面 y += x;
在y上面減去x的值 y -= x;
得到y的x倍的值 y *= x;
得到y除以x的值 y /= x;
取y除以x後的余數 y %= x;
y向右位移x位 y >>= x;
y向左位移x位 y <<= x;
得到邏輯AND的值 y &= x;
得到邏輯OR的值 y |= x;
得到邏輯非OR的值 y ^= x;
注:一個表達式只能有一個賦值運算符.
關系運算符
用返回0(False)或1(True)來表示兩個量之間的關系。
a是否等於b a == b;
a是否不等於b a != b;
a是否小於b a < b;
a是否大於b a > b;
a是否小於等於b a <= b;
a是否大於等於b a >= b;
真假運算符
否定運算符(!),用來表示真假的反面的結果。
// 如果a不是真的
if(!a)
Print("not 'a'");
邏輯運算符或(||)用來表示兩個表達式只要有一個成立即可。
示例:
if(xl)
Print("out of range");
邏輯運算符和(&&)用來表示兩個表達式要同時成立才行。
示例:
if(p!=x && p>y)
Print("true");
n++;
位邏輯運算符
~ 運算符對操作數執行按位求補操作。
b = ~n;
>> 運算符對操作數執行向右位移操作。
x = x >> y;
<< 運算符對操作數執行向左位移操作。
x = x << y;
一元 & 運算符返回操作數的地址
為整型和 bool 類型預定義了二進制 & 運算符。對於整型，& 計算操作數的按位“與”。對於 bool 操作數，& 計算操作數的邏輯“與”；也就是說，當且僅當兩個操作數均為 true 時，其結果才為 true。
b = ((x & y) != 0);
二進制 | 運算符是為整型和 bool 類型預定義的。對於整型，| 對操作數進行按位“或”運算。對於 bool 操作數，| 對操作數進行邏輯“或”計算，也就是說，當且僅當兩個操作數均為 false 時，其結果才為 false。
b = x | y;
為整型和 bool 類型預定義了 ^ 二進制操作數。對於整型，^ 計算操作數的按位“異或”。對於 bool 操作數，^ 計算操作數的邏輯“異或”；也就是說，當且僅當只有一個操作數為 true 時，其結果才為 true。
b = x ^ y;
注：位邏輯運算符只作用於Integers類型
其它運算符
索引。定位在數組中i位置的值。
array = 3;
//將3負值到array數組第i位置上
使用 x1,x2,...,xn 這樣的方法將各種值傳送到function中進行運算。
示例:
double SL=Ask-25*Point;
double TP=Ask+25*Point;
int ticket=OrderSend(Symbol(),OP_BUY,1,Ask,3,SL,TP,
"My comment",123,0,Red);
優先級規則
下面是從上到下的運算優先規則，優先級高的將先被運算。
() Function call From left to right
[] Array element selection
! Negation From left to right
~ Bitwise negation
- Sign changing operation
* Multiplication From left to right
/ Division
% Module division
+ Addition From left to right
- Subtraction
<< Left shift From left to right
>> Right shift
< Less than From left to right
<= Less than or equals
> Greater than
>= Greater than or equals
== Equals From left to right
!= Not equal
& Bitwise AND operation From left to right
^ Bitwise exclusive OR From left to right
| Bitwise OR operation From left to right
&& Logical AND From left to right
|| Logical OR From left to right
= Assignment From right to left
+= Assignment addition
-= Assignment subtraction
*= Assignment multiplication
/= Assignment division
%= Assignment module
>>= Assignment right shift
<<= Assignment left shift
&= Assignment bitwise AND
|= Assignment bitwise OR
^= Assignment exclusive OR
, Comma From left to right
操作符 [Operators]
格式和嵌套
格式.一個操作符可以占用一行或者多行，兩個或多個操作符可以占用更多的行。
嵌套.執行控制符(if, if-else, switch, while and for)可以進行任意嵌套.
復合操作符
一個復合操作符有一個(一個區段)和由一個或多個任何類型的操作符組成的的附件{}. 每個表達式使用分號作為結束(;)
示例:
if(x==0)
{
x=1; y=2; z=3;
}
表達式操作符
任何以分號(;)結束的表達式都被視為是一個操作符。
Assignment operator.
Identifier=expression;
標識符=表達式;
示例:
x=3;
y=x=3; // 這是錯誤的
一個操作符中只能有一個表達式。
調用函數操作符
Function_name(argument1,..., argumentN);
函數名稱(參數1,...,參數N);
示例:
fclose(file);
空操作符
只有一個分號組成(;).我們用它來表示沒有任何表達式的空操作符.
停止操作符
一個break; , 我們將其放在嵌套內的指定位置,用來在指定情況下跳出循環操作.
示例:
// 從0開始搜索數組
for(i=0;i<ARRAY_SIZE;I++)
if((array==0)
break;
繼續操作符
一個continue;我們將其放在嵌套內的指定位置,用來在指定情況下跳過接下來的運算，直接跳入下一次的循環。
示例:
// summary of nonzero elements of array
int func(int array[])
{
int array_size=ArraySize(array);
int sum=0;
for(int i=0;i
{
if(a==0) continue;
sum+=a;
}
return(sum);
}
返回操作符
一個return;將需要返回的結果放在return後面的()中。
示例:
return(x+y);
條件操作符 if
if (expression)
operator;
如果表達式為真那麼執行操作。
示例:
if(a==x)
temp*=3;
temp=MathAbs(temp);
條件操作符 if-else
if (expression)
operator1
else
operator2
如果表達式為真那麼執行operator1，如果為假執行operator2，else後還可以跟進多個if執行多項選擇。詳見示例。
示例:
if(x>1)
if(y==2)
z=5;
else
z=6;
if(x>l)
{
if(y==2) z=5;
}
else
{
z=6;
}
// 多項選擇
if(x=='a')
{
y=1;
}
else if(x=='b')
{
y=2;
z=3;
}
else if(x=='c')
{
y = 4;
}
else
{
Print("ERROR");
}
選擇操作符 switch
switch (expression)
{
case constant1: operators; break;
case constant2: operators; break;
...
default: operators; break;
}
當表達式expression的值等於結果之一時，執行其結果下的操作。不管結果如何都將執行default中的操作。
示例:
case 3+4: //正確的
case X+Y: //錯誤的
被選擇的結果只可以是常數，不可為變量或表達式。
示例:
switch(x)
{
case 'A':
Print("CASE An");
break;
case 'B':
case 'C':
Print("CASE B or Cn");
break;
default:
Print("NOT A, B or Cn");
break;
}
循環操作符 while
while (expression)
operator;
只要表達式expression為真就執行操作operator
示例:
while(k<N)
{
y=y*x;
k++;
}
循環操作符 for
for (expression1; expression2; expression3)
operator;
用表達式1(expression1)來定義初始變量,當表達式2(expression2)為真的時候執行操作operator,在每次循環結束後執行表達式3(expression3)
用while可以表示為這樣:
expression1;
while (expression2)
{
operator;
expression3;
};
示例:
for(x=1;x<=7;x++)
Print(MathPower(x,2));
使用for(;;)可以造成一個死循環如同while(true)一樣.
表達式1和表達式3都可以內嵌多個用逗號(,)分割的表達式。
示例:
for(i=0,j=n-l;i<N;I++,J--)
a=a[j];
函數 [Function]
函數定義
一個函數是由返回值、輸入參數、內嵌操作所組成的。
示例:
double // 返回值類型
linfunc (double x, double a, double b) // 函數名和輸入參數
{
// 內嵌的操作
return (a*x + b); // 返回值
}
如果沒有返回值那麼返回值的類型可以寫為void
示例:
void errmesg(string s)
{
Print("error: "+s);
}
函數調用
function_name (x1,x2,...,xn)
示例:
int somefunc()
{
double a=linfunc(0.3, 10.5, 8);
}
double linfunc(double x, double a, double b)
{
return (a*x + b);
}
特殊函數 init()、deinit()和start()
init()在載入時調用，可以用此函數在開始自定義指標或者自動交易之前做初始化操作。
deinit()在卸載時調用，可以用此函數在去處自定義指標或者自動交易之前做初始化操作。
start()當數據變動時觸發，對於自定義指標或者自動交易的編程主要依靠此函數進行。
變量 [Variables]
定義變量
定義基本類型
基本類型包括
• string - 字符串型;
• int - 整數型;
• double - 雙精度浮點數型;
• bool - 布爾型
示例:
string MessageBox;
int Orders;
double SymbolPrice;
bool bLog;
定義附加類型
附加類型包括
• datetime - 時間型,使用無符號整型數字存儲,是1970.1.1 0:0:0開始的秒數
• color - 顏色,使用三色的整型數字編碼而成
示例:
extern datetime tBegin_Data = D'2004.01.01 00:00';
extern color cModify_Color = C'0x44,0xB9,0xE6';
定義數組類型
示例:
int a[50]; //一個一維由五十個int組成的數組
double m[7][50]; //一個兩維由7x50個double組成的數組
內部變量定義
內部變量顧名思義是在內部使用的，可以理解為在當前嵌套內所使用的變量。
函數參數定義
示例:
void func(int x, double y, bool z)
{
...
}
函數的參數內的變量只能在函數內才生效，在函數外無法使用，而且在函數內對變量進行的修改在函數外無法生效。
調用函數示例:
func(123, 0.5);
如果有需要在變量傳入由參數傳入函數內操作後保留修改在函數外生效的情況的話，可以在參數定義的類型名稱後加上修飾符(&)。
示例:
void func(int& x, double& y, double& z[])
{
...
}
靜態變量定義
在數據類型前加上static就可以將變量定義成靜態變量
示例:
{
static int flag
}
全局變量定義
全局變量是指在整個程序中都能夠調用的變量，只需將變量定義卸載所有嵌套之外即可。
示例:
int Global_flag;
int start()
{
...
}
附加變量定義
附加變量可以允許由用戶自己輸入。
示例:
extern double InputParameter1 = 1.0;
int init()
{
...
}
初始化變量
變量必須經過初始化才可以使用。
基本類型
示例:
int mt = 1; // integer 初始化
// double 初始化
double p = MarketInfo(Symbol(),MODE_POINT);
// string 初始化
string s = "hello";
數組類型
示例:
int mta[6] = {1,4,9,16,25,36};
外部函數引用
示例:
#import "user32.dll"
int MessageBoxA(int hWnd ,string szText,
string szCaption,int nType);
int SendMessageA(int hWnd,int Msg,int wParam,int lParam);
#import "lib.ex4"
double round(double value);
#import
預處理程序 [Preprocessor]
定義常數
#define identifier_value
常數可以是任何類型的，常數在程序中不可更改。
示例:
#define ABC 100
#define PI 0.314
#define COMPANY_NAME "MetaQuotes Software Corp."
編譯參數定義
#property identifier_value
示例:
#property link "http://www.metaquotes.net"
#property copyright "MetaQuotes Software Corp."
#property stacksize 1024
以下是所有的參數名稱:
參數名稱 類型 說明
link string 設置一個鏈接到公司網站
copyright string 公司名稱
stacksize int 堆棧大小
indicator_chart_window void 顯示在走勢圖窗口
indicator_separate_window void 顯示在新區塊
indicator_buffers int 顯示緩存最高8
indicator_minimum int 圖形區間最低點
indicator_maximum int 圖形區間最高點
indicator_colorN color 第N根線的顏色，最高8根線
indicator_levelN double predefined level N for separate window custom indicator
show_confirm void 當程序執行之前是否經過確認
show_inputs void before script run its property sheet appears; disables show_confirm property
嵌入文件
#include <file_name>
示例:
#include <win32.h>
#include "file_name"
示例:
#include "mylib.h"
引入函數或其他模塊
#import "file_name"
func1();
func2();
#import
示例:
#import "user32.dll"
int MessageBoxA(int hWnd,string lpText,string lpCaption,
int uType);
int MessageBoxExA(int hWnd,string lpText,string lpCaption,
int uType,int wLanguageId);
#import "melib.ex4"
#import "gdi32.dll"
int GetDC(int hWnd);
int ReleaseDC(int hWnd,int hDC);
#import
賬戶信息 [Account Information]
double AccountBalance()
返回賬戶余額
示例:
Print("Account balance = ",AccountBalance());
double AccountCredit()
返回賬戶信用點數
示例:
Print("Account number ", AccountCredit());
string AccountCompany()
返回賬戶公司名
示例:
Print("Account company name ", AccountCompany());
string AccountCurrency()
返回賬戶所用的通貨名稱
示例:
Print("account currency is ", AccountCurrency());
double AccountEquity()
返回資產淨值
示例:
Print("Account equity = ",AccountEquity());
double AccountFreeMargin()
Returns free margin value of the current account.
示例:
Print("Account free margin = ",AccountFreeMargin());
int AccountLeverage()
返回槓桿比率
示例:
Print("Account #",AccountNumber(), " leverage is ", AccountLeverage());
double AccountMargin()
Returns margin value of the current account.
示例:
Print("Account margin ", AccountMargin());
string AccountName()
返回賬戶名稱
示例:
Print("Account name ", AccountName());
int AccountNumber()
返回賬戶數字
示例:
Print("account number ", AccountNumber());
double AccountProfit()
返回賬戶利潤
示例:
Print("Account profit ", AccountProfit());
數組函數 [Array Functions]
int ArrayBsearch( double array[], double value, int count=WHOLE_ARRAY, int start=0, int direction=MODE_ASCEND)
搜索一個值在數組中的位置
此函數不能用在字符型或連續數字的數組上.
:: 輸入參數
array[] - 需要搜索的數組
value - 將要搜索的值
count - 搜索的數量，默認搜索所有的數組
start - 搜索的開始點，默認從頭開始
direction - 搜索的方向，MODE_ASCEND 順序搜索 MODE_DESCEND 倒序搜索
示例:
datetime daytimes[];
int shift=10,dayshift;
// All the Time[] timeseries are sorted in descendant mode
ArrayCopySeries(daytimes,MODE_TIME,Symbol(),PERIOD_D1);
if(Time[shift]>>=daytimes[0]) dayshift=0;
else
{
dayshift=ArrayBsearch(daytimes,Time[shift],WHOLE_ARRAY,0,MODE_DESCEND);
if(Period()<
ERIOD_D1)
dayshift++;
}
Print(TimeToStr(Time[shift])," corresponds to ",dayshift," day bar opened at ",
TimeToStr(daytimes[dayshift]));
int ArrayCopy( object& dest[], object source[], int start_dest=0, int start_source=0, int count=WHOLE_ARRAY)
復制一個數組到另外一個數組。
只有double[], int[], datetime[], color[], 和 bool[] 這些類型的數組可以被復制。
:: 輸入參數
dest[] - 目標數組
source[] - 源數組
start_dest - 從目標數組的第幾位開始寫入，默認為0
start_source - 從源數組的第幾位開始讀取，默認為0
count - 讀取多少位的數組
示例:
double array1[][6];
double array2[10][6];
// fill array with some data
ArrayCopyRates(array1);
ArrayCopy(array2, array1,0,Bars-9,10);
// now array2 has first 10 bars in the history
int ArrayCopyRates( double& dest_array[], string symbol=NULL, int timeframe=0)
復制一段走勢圖上的數據到一個二維數組，數組的第二維只有6個項目分別是:
0 - 時間,
1 - 開盤價,
2 - 最低價,
3 - 最高價,
4 - 收盤價,
5 - 成交量.
:: 輸入參數
dest_array[] - 目標數組
symbol - 標示，當前所需要的通貨的標示
timeframe - 圖表的時間線
示例:
double array1[][6];
ArrayCopyRates(array1,"EURUSD", PERIOD_H1);
Print("Current bar ",TimeToStr(array1[0][0]),"Open", array1[0][1]);
int ArrayCopySeries( double& array[], int series_index, string symbol=NULL, int timeframe=0)
復制一個系列的走勢圖數據到數組上
注: 如果series_index是MODE_TIME, 那麼第一個參數必須是日期型的數組
:: 輸入參數
dest_array[] - 目標數組
series_index - 想要取的系列的名稱或編號,0-5
symbol - 標示，當前所需要的通貨的標示
timeframe - 圖表的時間線
示例:
datetime daytimes[];
int shift=10,dayshift;
// All the Time[] timeseries are sorted in descendant mode
ArrayCopySeries(daytimes,MODE_TIME,Symbol(),PERIOD_D1);
if(Time[shift]>=daytimes[0]) dayshift=0;
else
{
dayshift=ArrayBsearch(daytimes,Time[shift],WHOLE_ARRAY,0,MODE_DESCEND);
if(Period()
}
Print(TimeToStr(Time[shift])," corresponds to ",dayshift," day bar opened at ", TimeToStr(daytimes[dayshift]));
int ArrayDimension( int array[])
返回數組的維數
:: 輸入參數
array[] - 需要檢查的數組
示例:
int num_array[10][5];
int dim_size;
dim_size=ArrayDimension(num_array);
// dim_size is 2
bool ArrayGetAsSeries(object array[])
檢查數組是否是有組織序列的數組(是否從最後到最開始排序過的)，如果不是返回否
:: 輸入參數
array[] - 需要檢查的數組
示例:
if(ArrayGetAsSeries(array1)==true)
Print("array1 is indexed as a series array");
else
Print("array1 is indexed normally (from left to right)");
int ArrayInitialize( double& array[], double value)
對數組進行初始化，返回經過初始化的數組項的個數
:: 輸入參數
array[] - 需要初始化的數組
value - 新的數組項的值
示例:
//---- 把所有數組項的值設置為2.1
double myarray[10];
ArrayInitialize(myarray,2.1);
bool ArrayIsSeries( object array[])
檢查數組是否連續的(time,open,close,high,low, or volume).
:: 輸入參數
array[] - 需要檢查的數組
示例:
if(ArrayIsSeries(array1)==false)
ArrayInitialize(array1,0);
else
{
Print("Series array cannot be initialized!");
return(-1);
}
int ArrayMaximum( double array[], int count=WHOLE_ARRAY, int start=0)
找出數組中最大值的定位
:: 輸入參數
array[] - 需要檢查的數組
count - 搜索數組中項目的個數
start - 搜索的開始點
示例:
double num_array[15]={4,1,6,3,9,4,1,6,3,9,4,1,6,3,9};
int maxValueIdx=ArrayMaximum(num_array);
Print("Max value = ", num_array[maxValueIdx]);
int ArrayMinimum( double array[], int count=WHOLE_ARRAY, int start=0)
找出數組中最小值的定位
:: 輸入參數
array[] - 需要檢查的數組
count - 搜索數組中項目的個數
start - 搜索的開始點
示例:
double num_array[15]={4,1,6,3,9,4,1,6,3,9,4,1,6,3,9};
double minValueidx=ArrayMinimum(num_array);
Print("Min value = ", num_array[minValueIdx]);
int ArrayRange( object array[], int range_index)
取數組中指定維數中項目的數量。
:: 輸入參數
array[] - 需要檢查的數組
range_index - 指定的維數
示例:
int dim_size;
double num_array[10,10,10];
dim_size=ArrayRange(num_array, 1);
int ArrayResize( object& array[], int new_size)
重定義數組大小
:: 輸入參數
array[] - 需要檢查的數組
new_size - 第一維中數組的新大小
示例:
double array1[][4];
int element_count=ArrayResize(array, 20);
// 數組中總項目數為80
bool ArraySetAsSeries( double& array[], bool set)
設置指數數組為系列數組，數組0位的值是最後的值。返回之前的數組狀態
:: 輸入參數
array[] - 需要處理的數組
set - 是否是設置為系列數組，true或者false
示例:
double macd_buffer[300];
double signal_buffer[300];
int i,limit=ArraySize(macd_buffer);
ArraySetAsSeries(macd_buffer,true);
for(i=0; i
macd_buffer=iMA(NULL,0,12,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,26,0,MODE_EMA,PRICE_CLOSE,i);
for(i=0; i
signal_buffer=iMAOnArray(macd_buffer,limit,9,0,MODE_SMA,i);
int ArraySize( object array[])
返回數組的項目數
:: 輸入參數
array[] - 需要處理的數組
示例:
int count=ArraySize(array1);
for(int i=0; i
{
// do some calculations.
}
int ArraySort( double& array[], int count=WHOLE_ARRAY, int start=0, int sort_dir=MODE_ASCEND)
對數組進行排序，系列數組不可進行排序
:: 輸入參數
array[] - 需要處理的數組
count - 對多少個數組項進行排序
start - 排序的開始點
sort_dir - 排序方式，MODE_ASCEND順序排列 MODE_DESCEND倒序排列
示例:
double num_array[5]={4,1,6,3,9};
// now array contains values 4,1,6,3,9
ArraySort(num_array);
// now array is sorted 1,3,4,6,9
ArraySort(num_array,MODE_DESCEND);
// now array is sorted 9,6,4,3,1
類型轉換函數 [Conversion Functions]
string CharToStr( int char_code)
將字符型轉換成字符串型結果返回
:: 輸入參數
char_code - 字符的ACSII碼
示例:
string str="WORL" + CharToStr(44); // 44 is code for 'D'
// resulting string will be WORLD
string DoubleToStr( double value, int digits)
將雙精度浮點型轉換成字符串型結果返回
:: 輸入參數
value - 浮點型數字
digits - 小數點後多少位,0-8
示例:
string value=DoubleToStr(1.28473418, 5);
// value is 1.28473
double NormalizeDouble( double value, int digits)
將雙精度浮點型格式化後結果返回
:: 輸入參數
value - 浮點型數字
digits - 小數點後多少位,0-8
示例:
double var1=0.123456789;
Print(NormalizeDouble(var1,5));
// output: 0.12346
double StrToDouble( string value)
將字符串型轉換成雙精度浮點型結果返回
:: 輸入參數
value - 數字的字符串
示例:
double var=StrToDouble("103.2812");
int StrToInteger( string value)
將字符串型轉換成整型結果返回
:: 輸入參數
value - 數字的字符串
示例:
int var1=StrToInteger("1024");
datetime StrToTime( string value)
將字符串型轉換成時間型結果返回，輸入格式為 yyyy.mm.dd hh:mi
:: 輸入參數
value - 時間的字符串
示例:
datetime var1;
var1=StrToTime("2003.8.12 17:35");
var1=StrToTime("17:35"); // returns with current date
var1=StrToTime("2003.8.12"); // returns with midnight time "00:00"
string TimeToStr( datetime value, int mode=TIME_DATE|TIME_MINUTES)
將時間型轉換成字符串型返回
:: 輸入參數
value - 時間的數字，從1970.1.1 0:0:0 到現在的秒數
mode - 返回字符串的格式 TIME_DATE(yyyy.mm.dd),TIME_MINUTES(hh:mi),TIME_SECONDS(hh:mi:ss)
示例:
strign var1=TimeToStr(CurTime(),TIME_DATE|TIME_SECONDS);
公用函數 [Common Functions]
void Alert( ... )
彈出一個顯示信息的警告窗口
:: 輸入參數
... - 任意值，如有多個可用逗號分割
示例:
if(Close[0]>SignalLevel)
Alert("Close price coming ", Close[0],"!!!");
string ClientTerminalName()
返回客戶終端名稱
示例:
Print("Terminal name is ",ClientTerminalName());
string CompanyName()
返回公司名稱
示例:
Print("Company name is ",CompanyName());
void Comment( ... )
顯示信息在走勢圖左上角
:: 輸入參數
... - 任意值，如有多個可用逗號分割
示例:
double free=AccountFreeMargin();
Comment("Account free margin is ",DoubleToStr(free,2),"n","Current time is ",TimeToStr(CurTime()));
int GetLastError()
取最後錯誤在錯誤中的索引位置
示例:
int err;
int handle=FileOpen("somefile.dat", FILE_READ|FILE_BIN);
if(handle<1)
{
err=GetLastError();
Print("error(",err,"): ",ErrorDescription(err));
return(0);
}
int GetTickCount()
取時間標記，函數取回用毫秒標示的時間標記。
示例:
int start=GetTickCount();
// do some hard calculation...
Print("Calculation time is ", GetTickCount()-start, " milliseconds.");
void HideTestIndicators(bool hide)
使用此函數設置一個在Expert Advisor的開關，在測試完成之前指標不回顯示在圖表上。
:: 輸入參數
hide - 是否隱藏 True或者False
示例:
HideTestIndicators(true);
bool IsConnected()
返回客戶端是否已連接
示例:
if(!IsConnected())
{
Print("Connection is broken!");
return(0);
}
// Expert body that need opened connection
// ...
bool IsDemo()
返回是否是模擬賬戶
示例:
if(IsDemo()) Print("I am working on demo account");
else Print("I am working on real account");
bool IsDllsAllowed()
返回是否允許載入Dll文件
示例:
#import "user32.dll"
int MessageBoxA(int hWnd ,string szText, string szCaption,int nType);
...
...
if(IsDllsAllowed()==false)
{
Print("DLL call is not allowed. Experts cannot run.");
return(0);
}
// expert body that calls external DLL functions
MessageBoxA(0,"an message","Message",MB_OK);
bool IsLibrariesAllowed()
返回是否允許載入庫文件
示例:
#import "somelibrary.ex4"
int somefunc();
...
...
if(IsLibrariesAllowed()==false)
{
Print("Library call is not allowed. Experts cannot run.");
return(0);
}
// expert body that calls external DLL functions
somefunc();
bool IsStopped()
返回是否處於停止狀態
示例:
while(expr!=false)
{
if(IsStopped()==true) return(0);
// long time procesing cycle
// ...
}
bool IsTesting()
返回是否處於測試模式
示例:
if(IsTesting()) Print("I am testing now");
bool IsTradeAllowed()
返回是否允許交易
示例:
if(IsTradeAllowed()) Print("Trade allowed");
double MarketInfo( string symbol, int type)
返回市場當前情況
:: 輸入參數
symbol - 通貨代碼
type - 返回結果的類型
示例:
double var;
var=MarketInfo("EURUSD",MODE_BID);
int MessageBox( string text=NULL, string caption=NULL, int flags=EMPTY)
彈出消息窗口，返回消息窗口的結果
:: 輸入參數
text - 窗口顯示的文字
caption - 窗口上顯示的標題
flags - 窗口選項開關
示例:
#include
if(ObjectCreate("text_object", OBJ_TEXT, 0, D'2004.02.20 12:30', 1.0045)==false)
{
int ret=MessageBox("ObjectCreate() fails with code "+GetLastError()+"nContinue?", "Question", MB_YESNO|MB_ICONQUESTION);
if(ret==IDNO) return(false);
}
// continue
int Period()
返回圖表時間線的類型
示例:
Print("
eriod is ", Period());
void PlaySound( string filename)
播放音樂文件
:: 輸入參數
filename - 音頻文件名
示例:
if(IsDemo()) PlaySound("alert.wav");
void Print( ... )
將文本打印在結果窗口內
:: 輸入參數
... - 任意值，復數用逗號分割
示例:
Print("Account free margin is ", AccountFreeMargin());
Print("Current time is ", TimeToStr(CurTime()));
double pi=3.141592653589793;
Print("
I number is ", DoubleToStr(pi,8));
// Output: PI number is 3.14159265
// Array printing
for(int i=0;i<10;i++)
Print(Close);
bool RefreshRates()
返回數據是否已經被刷新過了
示例:
int ticket;
while(true)
{
ticket=OrderSend(Symbol(),OP_BUY,1.0,Ask,3,0,0,"expert comment",255,0,CLR_NONE);
if(ticket<=0)
{
int error=GetLastError();
if(error==134) break; // not enough money
if(error==135) RefreshRates(); // prices changed
break;
}
else { OrderPrint(); break; }
//---- 10 seconds wait
Sleep(10000);
}
void SendMail( string subject, string some_text)
發送郵件到指定信箱，需要到菜單 Tools -> Options -> Email 中將郵件打開.
:: 輸入參數
subject - 郵件標題
some_text - 郵件內容
示例:
double lastclose=Close[0];
if(lastclose<MY_SIGNAL)
SendMail("from your expert", "
rice dropped down to "+DoubleToStr(lastclose));
string ServerAddress()
返回服務器地址
示例:
Print("Server address is ", ServerAddress());
void Sleep( int milliseconds)
設置線程暫停時間
:: 輸入參數
milliseconds - 暫停時間 1000 = 1秒
示例:
Sleep(5);
void SpeechText( string text, int lang_mode=SPEECH_ENGLISH)
使用Speech進行語音輸出
:: 輸入參數
text - 閱讀的文字
lang_mode - 語音模式 SPEECH_ENGLISH (默認的) 或 SPEECH_NATIVE
示例:
double lastclose=Close[0];
SpeechText("
rice dropped down to "+DoubleToStr(lastclose));
string Symbol()
返回當前當前通貨的名稱
示例:
int total=OrdersTotal();
for(int pos=0;pos<TOTAL
OS++)
{
// check selection result becouse order may be closed or deleted at this time!
if(OrderSelect(pos, SELECT_BY_POS)==false) continue;
if(OrderType()>OP_SELL || OrderSymbol()!=Symbol()) continue;
// do some orders processing...
}
int UninitializeReason()
取得程序末初始化的理由
示例:
// this is example
int deinit()
{
switch(UninitializeReason())
{
case REASON_CHARTCLOSE:
case REASON_REMOVE: CleanUp(); break; // clean up and free all expert's resources.
case REASON_RECOMPILE:
case REASON_CHARTCHANGE:
case REASON_PARAMETERS:
case REASON_ACCOUNT: StoreData(); break; // prepare to restart
}
//...
}
自定義指標函數 [Custom Indicator Functions]
void IndicatorBuffers(int count)
設置自定義指標緩存數
:: 輸入參數
count - 緩存數量
示例:
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Silver
//---- indicator parameters
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
//---- indicator buffers
double ind_buffer1[];
double ind_buffer2[];
double ind_buffer3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 2 additional buffers are used for counting.
IndicatorBuffers(3);
//---- drawing settings
SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,3);
SetIndexDrawBegin(0,SignalSMA);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2);
//---- 3 indicator buffers mapping
SetIndexBuffer(0,ind_buffer1);
SetIndexBuffer(1,ind_buffer2);
SetIndexBuffer(2,ind_buffer3);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("OsMA("+FastEMA+","+SlowEMA+","+SignalSMA+")");
//---- initialization done
return(0);
}
int IndicatorCounted()
返回緩存數量
示例:
int start()
{
int limit;
int counted_bars=IndicatorCounted();
//---- check for possible errors
if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
//---- main loop
for(int i=0; i
{
//---- ma_shift set to 0 because SetIndexShift called abowe
ExtBlueBuffer=iMA(NULL,0,JawsPeriod,0,MODE_SMMA,PRICE_MEDIAN,i);
ExtRedBuffer=iMA(NULL,0,TeethPeriod,0,MODE_SMMA,PRICE_MEDIAN,i);
ExtLimeBuffer=iMA(NULL,0,LipsPeriod,0,MODE_SMMA,PRICE_MEDIAN,i);
}
//---- done
return(0);
}
void IndicatorDigits( int digits)
設置指標精確度
:: 輸入參數
digits - 小數點後的小數位數
示例:
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Silver
//---- indicator parameters
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
//---- indicator buffers
double ind_buffer1[];
double ind_buffer2[];
double ind_buffer3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 2 additional buffers are used for counting.
IndicatorBuffers(3);
//---- drawing settings
SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,3);
SetIndexDrawBegin(0,SignalSMA);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2);
//---- 3 indicator buffers mapping
SetIndexBuffer(0,ind_buffer1);
SetIndexBuffer(1,ind_buffer2);
SetIndexBuffer(2,ind_buffer3);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("OsMA("+FastEMA+","+SlowEMA+","+SignalSMA+")");
//---- initialization done
return(0);
}
void IndicatorShortName( string name)
設置指標的簡稱
:: 輸入參數
name - 新的簡稱
示例:
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Silver
//---- indicator parameters
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
//---- indicator buffers
double ind_buffer1[];
double ind_buffer2[];
double ind_buffer3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 2 additional buffers are used for counting.
IndicatorBuffers(3);
//---- drawing settings
SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,3);
SetIndexDrawBegin(0,SignalSMA);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2);
//---- 3 indicator buffers mapping
SetIndexBuffer(0,ind_buffer1);
SetIndexBuffer(1,ind_buffer2);
SetIndexBuffer(2,ind_buffer3);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("OsMA("+FastEMA+","+SlowEMA+","+SignalSMA+")");
//---- initialization done
return(0);
}
void SetIndexArrow( int index, int code)
在指標上設置一個箭頭符號
:: 輸入參數
index - 第幾根指標線 0-7
code - 符號的編碼，參照 Wingdings 字體
示例:
SetIndexArrow(0, 217);
bool SetIndexBuffer( int index, double array[])
設置指標線的緩存數組
:: 輸入參數
index - 第幾根指標線 0-7
array[] - 緩存的數組
示例:
double ExtBufferSilver[];
int init()
{
SetIndexBuffer(0, ExtBufferSilver); // set buffer for first line
// ...
}
void SetIndexDrawBegin( int index, int begin)
設置劃線的開始點
:: 輸入參數
index - 第幾根指標線 0-7
begin - 劃線的開始點
示例:
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Silver
//---- indicator parameters
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
//---- indicator buffers
double ind_buffer1[];
double ind_buffer2[];
double ind_buffer3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 2 additional buffers are used for counting.
IndicatorBuffers(3);
//---- drawing settings
SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,3);
SetIndexDrawBegin(0,SignalSMA);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2);
//---- 3 indicator buffers mapping
SetIndexBuffer(0,ind_buffer1);
SetIndexBuffer(1,ind_buffer2);
SetIndexBuffer(2,ind_buffer3);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("OsMA("+FastEMA+","+SlowEMA+","+SignalSMA+")");
//---- initialization done
return(0);
}
void SetIndexEmptyValue( int index, double value)
設置劃線的空值，空值不劃在和出現在數據窗口
:: 輸入參數
index - 第幾根指標線 0-7
value - 新的空值
示例:
SetIndexEmptyValue(6,0.0001);
void SetIndexLabel( int index, string text)
設置指標線的名稱
:: 輸入參數
index - 第幾根指標線 0-7
text - 線的名稱，Null不會顯示在數據窗口中
示例:
//+------------------------------------------------------------------+
//| Ichimoku Kinko Hyo initialization function |
//+------------------------------------------------------------------+
int init()
{
//----
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,Tenkan_Buffer);
SetIndexDrawBegin(0,Tenkan-1);
SetIndexLabel(0,"Tenkan Sen");
//----
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1,Kijun_Buffer);
SetIndexDrawBegin(1,Kijun-1);
SetIndexLabel(1,"Kijun Sen");
//----
a_begin=Kijun; if(a_begin SetIndexStyle(2,DRAW_HISTOGRAM,STYLE_DOT);
SetIndexBuffer(2,SpanA_Buffer);
SetIndexDrawBegin(2,Kijun+a_begin-1);
SetIndexShift(2,Kijun);
//---- Up Kumo bounding line does not show in the DataWindow
SetIndexLabel(2,NULL);
SetIndexStyle(5,DRAW_LINE,STYLE_DOT);
SetIndexBuffer(5,SpanA2_Buffer);
SetIndexDrawBegin(5,Kijun+a_begin-1);
SetIndexShift(5,Kijun);
SetIndexLabel(5,"Senkou Span A");
//----
SetIndexStyle(3,DRAW_HISTOGRAM,STYLE_DOT);
SetIndexBuffer(3,SpanB_Buffer);
SetIndexDrawBegin(3,Kijun+Senkou-1);
SetIndexShift(3,Kijun);
//---- Down Kumo bounding line does not show in the DataWindow
SetIndexLabel(3,NULL);
//----
SetIndexStyle(6,DRAW_LINE,STYLE_DOT);
SetIndexBuffer(6,SpanB2_Buffer);
SetIndexDrawBegin(6,Kijun+Senkou-1);
SetIndexShift(6,Kijun);
SetIndexLabel(6,"Senkou Span B");
//----
SetIndexStyle(4,DRAW_LINE);
SetIndexBuffer(4,Chinkou_Buffer);
SetIndexShift(4,-Kijun);
SetIndexLabel(4,"Chinkou Span");
//----
return(0);
}
void SetIndexShift( int index, int shift)
設置指標線的位移數
:: 輸入參數
index - 第幾根指標線 0-7
shift - 位移多少
示例:
//+------------------------------------------------------------------+
//| Alligator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- line shifts when drawing
SetIndexShift(0,JawsShift);
SetIndexShift(1,TeethShift);
SetIndexShift(2,LipsShift);
//---- first positions skipped when drawing
SetIndexDrawBegin(0,JawsShift+JawsPeriod);
SetIndexDrawBegin(1,TeethShift+TeethPeriod);
SetIndexDrawBegin(2,LipsShift+LipsPeriod);
//---- 3 indicator buffers mapping
SetIndexBuffer(0,ExtBlueBuffer);
SetIndexBuffer(1,ExtRedBuffer);
SetIndexBuffer(2,ExtLimeBuffer);
//---- drawing settings
SetIndexStyle(0,DRAW_LINE);
SetIndexStyle(1,DRAW_LINE);
SetIndexStyle(2,DRAW_LINE);
//---- index labels
SetIndexLabel(0,"Gator Jaws");
SetIndexLabel(1,"Gator Teeth");
SetIndexLabel(2,"Gator Lips");
//---- initialization done
return(0);
}
void SetIndexStyle( int index, int type, int style=EMPTY, int width=EMPTY, color clr=CLR_NONE)
設置指標線的樣式
:: 輸入參數
index - 第幾根指標線 0-7
type - 線形狀的種類，詳見線條種類
style - 劃線的樣式
width - 顯得寬度(1,2,3,4,5)
clr - 線的顏色
示例:
SetIndexStyle(3, DRAW_LINE, EMPTY, 2, Red);
日期時間函數 [Date & Time Functions]
datetime CurTime( )
返回當前時間
示例:
if(CurTime()-OrderOpenTime()<360) return(0);
int Day()
返回當前日期
示例:
if(Day()<5) return(0);
int DayOfWeek( )
返回當前日期是星期幾 0-星期天,1,2,3,4,5,6
示例:
// do not work on holidays.
if(DayOfWeek()==0 || DayOfWeek()==6) return(0);
int DayOfYear( )
返回當前日期在年內的第幾天
示例:
if(DayOfYear()==245)
return(true);
int Hour()
返回當前的小時數 0-23
示例:
bool is_siesta=false;
if(Hour()>=12 || Hour()<17)
is_siesta=true;
datetime LocalTime()
返回當前電腦時間
示例:
if(LocalTime()-OrderOpenTime()<360) return(0);
int Minute()
返回當前分鐘
示例:
if(Minute()<=15)
return("first quarter");
int Month()
返回當前月份
示例:
if(Month()<=5)
return("first half of year");
int Seconds()
返回當前秒數
示例:
if(Seconds()<=15)
return(0);
int TimeDay( datetime date)
返回輸入日期中的日期
:: 輸入參數
date - 輸入日期
示例:
int day=TimeDay(D'2003.12.31');
// day is 31
int TimeDayOfWeek( datetime date)
返回輸入日期中的日期是星期幾 (0-6)
:: 輸入參數
date - 輸入日期
示例:
int weekday=TimeDayOfWeek(D'2004.11.2');
// day is 2 - tuesday
int TimeDayOfYear( datetime date)
返回輸入日期中的日期在當年中的第幾天
:: 輸入參數
date - 輸入日期
示例:
int day=TimeDayOfYear(CurTime());
int TimeHour( datetime time)
返回輸入日期中的小時
:: 輸入參數
date - 輸入日期
示例:
int h=TimeHour(CurTime());
int TimeMinute( datetime time)
返回輸入日期中的分鐘
:: 輸入參數
date - 輸入日期
示例:
int m=TimeMinute(CurTime());
int TimeMonth( datetime time)
返回輸入日期中的月份
:: 輸入參數
date - 輸入日期
示例:
int m=TimeMonth(CurTime());
int TimeSeconds( datetime time)
返回輸入日期中的秒鐘
:: 輸入參數
date - 輸入日期
示例:
int m=TimeSeconds(CurTime());
int TimeYear( datetime time)
返回輸入日期中的年份
:: 輸入參數
date - 輸入日期
示例:
int y=TimeYear(CurTime());
int TimeYear( datetime time)
返回當前年份
示例:
// return if date before 1 May 2002
if(Year()==2002 && Month()<5)
return(0);
文件處理函數 [File Functions]
void FileClose(int handle)
關閉正在已經打開的文件.
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
int handle=FileOpen("filename", FILE_CSV|FILE_READ);
if(handle>0)
{
// working with file ...
FileClose(handle);
}
void FileDelete(string filename)
刪除文件，如果發生錯誤可以通過GetLastError()來查詢
注:你只能操作terminal_direxpertsfiles目錄下的文件
:: 輸入參數
filename - 目錄和文件名
示例:
// file my_table.csv will be deleted from terminal_direxpertsfiles directory
int lastError;
FileDelete("my_table.csv");
lastError=GetLastError();
if(laseError!=ERR_NOERROR)
{
Print("An error ocurred while (",lastError,") deleting file my_table.csv");
return(0);
}
void FileFlush(int handle)
將緩存中的數據刷新到磁盤上去
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
int bars_count=Bars;
int handle=FileOpen("mydat.csv",FILE_CSV|FILE_WRITE);
if(handle>0)
{
FileWrite(handle, "#","OPEN","CLOSE","HIGH","LOW");
for(int i=0;i<BARS_COUNT;I++)
FileWrite(handle, i+1,Open,Close,High, Low);
FileFlush(handle);
...
for(int i=0;i<BARS_COUNT;I++)
FileWrite(handle, i+1,Open,Close,High, Low);
FileClose(handle);
}
bool FileIsEnding(int handle)
檢查是否到了文件尾.
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
if(FileIsEnding(h1))
{
FileClose(h1);
return(false);
}
bool FileIsLineEnding( int handle)
檢查行是否到了結束
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
if(FileIsLineEnding(h1))
{
FileClose(h1);
return(false);
}
int FileOpen( string filename, int mode, int delimiter=';')
打開文件，如果失敗返回值小於1，可以通過GetLastError()獲取錯誤
注:只能操作terminal_direxpertsfiles目錄的文件
:: 輸入參數
filename - 目錄文件名
mode - 打開模式 FILE_BIN, FILE_CSV, FILE_READ, FILE_WRITE.
delimiter - CSV型打開模式用的分割符，默認為分號(;).
示例:
int handle;
handle=FileOpen("my_data.csv",FILE_CSV|FILE_READ,';');
if(handle<1)
{
Print("File my_data.dat not found, the last error is ", GetLastError());
return(false);
}
int FileOpenHistory( string filename, int mode, int delimiter=';')
打開歷史數據文件，如果失敗返回值小於1，可以通過GetLastError()獲取錯誤
:: 輸入參數
filename - 目錄文件名
mode - 打開模式 FILE_BIN, FILE_CSV, FILE_READ, FILE_WRITE.
delimiter - CSV型打開模式用的分割符，默認為分號(;).
示例:
int handle=FileOpenHistory("USDX240.HST",FILE_BIN|FILE_WRITE);
if(handle<1)
{
Print("Cannot create file USDX240.HST");
return(false);
}
// work with file
// ...
FileClose(handle);
int FileReadArray( int handle, object& array[], int start, int count)
將二進制文件讀取到數組中，返回讀取的條數，可以通過GetLastError()獲取錯誤
注:在讀取之前要調整好數組大小
:: 輸入參數
handle - FileOpen()返回的句柄
array[] - 寫入的數組
start - 在數組中存儲的開始點
count - 讀取多少個對象
示例:
int handle;
double varray[10];
handle=FileOpen("filename.dat", FILE_BIN|FILE_READ);
if(handle>0)
{
FileReadArray(handle, varray, 0, 10);
FileClose(handle);
}
double FileReadDouble( int handle, int size=DOUBLE_VALUE)
從文件中讀取浮點型數據，數字可以是8byte的double型或者是4byte的float型。
:: 輸入參數
handle - FileOpen()返回的句柄
size - 數字個是大小，DOUBLE_VALUE(8 bytes) 或者 FLOAT_VALUE(4 bytes).
示例:
int handle;
double value;
handle=FileOpen("mydata.dat",FILE_BIN);
if(handle>0)
{
value=FileReadDouble(handle,DOUBLE_VALUE);
FileClose(handle);
}
int FileReadInteger( int handle, int size=LONG_VALUE)
從文件中讀取整形型數據，數字可以是1,2,4byte的長度
:: 輸入參數
handle - FileOpen()返回的句柄
size - 數字個是大小，CHAR_VALUE(1 byte), SHORT_VALUE(2 bytes) 或者 LONG_VALUE(4 bytes).
示例:
int handle;
int value;
handle=FileOpen("mydata.dat", FILE_BIN|FILE_READ);
if(handle>0)
{
value=FileReadInteger(h1,2);
FileClose(handle);
}
double FileReadNumber( int handle)
從文件中讀取數字，只能在CSV裡使用
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
int handle;
int value;
handle=FileOpen("filename.csv", FILE_CSV, ';');
if(handle>0)
{
value=FileReadNumber(handle);
FileClose(handle);
}
string FileReadString( int handle, int length=0)
從文件中讀取字符串
:: 輸入參數
handle - FileOpen()返回的句柄
length - 讀取字符串長度
示例:
int handle;
string str;
handle=FileOpen("filename.csv", FILE_CSV|FILE_READ);
if(handle>0)
{
str=FileReadString(handle);
FileClose(handle);
}
bool FileSeek( int handle, int offset, int origin)
移動指針移動到某一點，如果成功返回true
:: 輸入參數
handle - FileOpen()返回的句柄
offset - 設置的原點
origin - SEEK_CUR從當前位置開始 SEEK_SET從文件頭部開始 SEEK_END 從文件尾部開始
示例:
int handle=FileOpen("filename.csv", FILE_CSV|FILE_READ, ';');
if(handle>0)
{
FileSeek(handle, 10, SEEK_SET);
FileReadInteger(handle);
FileClose(handle);
handle=0;
}
int FileSize( int handle)
返回文件大小
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
int handle;
int size;
handle=FileOpen("my_table.dat", FILE_BIN|FILE_READ);
if(handle>0)
{
size=FileSize(handle);
Print("my_table.dat size is ", size, " bytes");
FileClose(handle);
}
int FileTell( int handle)
返回文件讀寫指針當前的位置
:: 輸入參數
handle - FileOpen()返回的句柄
示例:
int handle;
int pos;
handle=FileOpen("my_table.dat", FILE_BIN|FILE_READ);
// reading some data
pos=FileTell(handle);
Print("current position is ", pos);
int FileWrite( int handle, ... )
向文件寫入數據
:: 輸入參數
handle - FileOpen()返回的句柄
... - 寫入的數據
示例:
int handle;
datetime orderOpen=OrderOpenTime();
handle=FileOpen("filename", FILE_CSV|FILE_WRITE, ';');
if(handle>0)
{
FileWrite(handle, Close[0], Open[0], High[0], Low[0], TimeToStr(orderOpen));
FileClose(handle);
}
int FileWriteArray( int handle, object array[], int start, int count)
向文件寫入數組
:: 輸入參數
handle - FileOpen()返回的句柄
array[] - 要寫入的數組
start - 寫入的開始點
count - 寫入的項目數
示例:
int handle;
double BarOpenValues[10];
// copy first ten bars to the array
for(int i=0;i<10; i++)
BarOpenValues=Open;
// writing array to the file
handle=FileOpen("mydata.dat", FILE_BIN|FILE_WRITE);
if(handle>0)
{
FileWriteArray(handle, BarOpenValues, 3, 7); // writing last 7 elements
FileClose(handle);
}
int FileWriteDouble( int handle, double value, int size=DOUBLE_VALUE)
向文件寫入浮點型數據
:: 輸入參數
handle - FileOpen()返回的句柄
value - 要寫入的值
size - 寫入的格式,DOUBLE_VALUE (8 bytes, default)或FLOAT_VALUE (4 bytes).
示例:
int handle;
double var1=0.345;
handle=FileOpen("mydata.dat", FILE_BIN|FILE_WRITE);
if(handle<1)
{
Print("can't open file error-",GetLastError());
return(0);
}
FileWriteDouble(h1, var1, DOUBLE_VALUE);
//...
FileClose(handle);
int FileWriteInteger( int handle, int value, int size=LONG_VALUE)
向文件寫入整型數據
:: 輸入參數
handle - FileOpen()返回的句柄
value - 要寫入的值
size - 寫入的格式,CHAR_VALUE (1 byte),SHORT_VALUE (2 bytes),LONG_VALUE (4 bytes, default).
示例:
int handle;
int value=10;
handle=FileOpen("filename.dat", FILE_BIN|FILE_WRITE);
if(handle<1)
{
Print("can't open file error-",GetLastError());
return(0);
}
FileWriteInteger(handle, value, SHORT_VALUE);
//...
FileClose(handle);
int FileWriteString( int handle, string value, int length)
向文件寫入字符串數據
:: 輸入參數
handle - FileOpen()返回的句柄
value - 要寫入的值
length - 寫入的字符長度
示例:
int handle;
string str="some string";
handle=FileOpen("filename.bin", FILE_BIN|FILE_WRITE);
if(handle<1)
{
Print("can't open file error-",GetLastError());
return(0);
}
FileWriteString(h1, str, 8);
FileClose(handle);
全局變量函數 [Global Variables Functions]
bool GlobalVariableCheck( string name)
檢查全局變量是否存在
:: 輸入參數
name - 全局變量的名稱
示例:
// check variable before use
if(!GlobalVariableCheck("g1"))
GlobalVariableSet("g1",1);
bool GlobalVariableDel( string name)
刪除全局變量
:: 輸入參數
name - 全局變量的名稱
示例:
// deleting global variable with name "gvar_1"
GlobalVariableDel("gvar_1");
double GlobalVariableGet( string name)
獲取全局變量的值
:: 輸入參數
name - 全局變量的名稱
示例:
double v1=GlobalVariableGet("g1");
//---- check function call result
if(GetLastError()!=0) return(false);
//---- continue processing
double GlobalVariableGet( string name)
獲取全局變量的值
:: 輸入參數
name - 全局變量的名稱
示例:
double v1=GlobalVariableGet("g1");
//---- check function call result
if(GetLastError()!=0) return(false);
//---- continue processing
datetime GlobalVariableSet( string name, double value )
設置全局變量的值
:: 輸入參數
name - 全局變量的名稱
value - 全局變量的值
示例:
//---- try to set new value
if(GlobalVariableSet("BarsTotal",Bars)==0)
return(false);
//---- continue processing
bool GlobalVariableSetOnCondition( string name, double value, double check_value)
有條件的設置全局變量的值
:: 輸入參數
name - 全局變量的名稱
value - 全局變量的值
check_value - 檢查變量的值
示例:
int init()
{
//---- create global variable
GlobalVariableSet("DATAFILE_SEM",0);
//...
}
int start()
{
//---- try to lock common resource
while(!IsStopped())
{
//---- locking
if(GlobalVariableSetOnCondition("DATAFILE_SEM",1,0)==true) break;
//---- may be variable deleted?
if(GetLastError()==ERR_GLOBAL_VARIABLE_NOT_FOUND) return(0);
//---- sleeping
Sleep(500);
}
//---- resource locked
// ... do some work
//---- unlock resource
GlobalVariableSet("DATAFILE_SEM",0);
}
void GlobalVariablesDeleteAll( )
刪除所有全局變量
示例:
GlobalVariablesDeleteAll();
數學運算函數 [Math & Trig]
double MathAbs( double value)
返回數字的絕對值
:: 輸入參數
value - 要處理的數字
示例:
double dx=-3.141593, dy;
// calc MathAbs
dy=MathAbs(dx);
Print("The absolute value of ",dx," is ",dy);
// Output: The absolute value of -3.141593 is 3.141593
double MathArccos( double x)
計算反余弦值
:: 輸入參數
value - 要處理的數字，范圍-1到1
示例:
double x=0.32696, y;
y=asin(x);
Print("Arcsine of ",x," = ",y);
y=acos(x);
Print("Arccosine of ",x," = ",y);
//Output: Arcsine of 0.326960=0.333085
//Output: Arccosine of 0.326960=1.237711
double MathArcsin( double x)
計算反正弦值
:: 輸入參數
x - 要處理的值
示例:
double x=0.32696, y;
y=MathArcsin(x);
Print("Arcsine of ",x," = ",y);
y=acos(x);
Print("Arccosine of ",x," = ",y);
//Output: Arcsine of 0.326960=0.333085
//Output: Arccosine of 0.326960=1.237711
double MathArctan( double x)
計算反正切值
:: 輸入參數
x - 要處理的值
示例:
double x=-862.42, y;
y=MathArctan(x);
Print("Arctangent of ",x," is ",y);
//Output: Arctangent of -862.42 is -1.5696
double MathCeil( double x)
返回向前進位後的值
:: 輸入參數
x - 要處理的值
示例:
double y;
y=MathCeil(2.8);
Print("The ceil of 2.8 is ",y);
y=MathCeil(-2.8);
Print("The ceil of -2.8 is ",y);
/*Output:
The ceil of 2.8 is 3
The ceil of -2.8 is -2*/
double MathCos( double value)
計算余弦值
:: 輸入參數
value - 要處理的值
示例:
double pi=3.1415926535;
double x, y;
x=pi/2;
y=MathSin(x);
Print("MathSin(",x,") = ",y);
y=MathCos(x);
Print("MathCos(",x,") = ",y);
//Output: MathSin(1.5708)=1
// MathCos(1.5708)=0
double MathExp( double d)
Returns value the number e raised to the power d. On overflow, the function returns INF (infinite) and on underflow, MathExp returns 0.
:: 輸入參數
d - A number specifying a power.
示例:
double x=2.302585093,y;
y=MathExp(x);
Print("MathExp(",x,") = ",y);
//Output: MathExp(2.3026)=10
double MathFloor( double x)
返回向後進位後的值
:: 輸入參數
x - 要處理的值
示例:
double y;
y=MathFloor(2.8);
Print("The floor of 2.8 is ",y);
y=MathFloor(-2.8);
Print("The floor of -2.8 is ",y);
/*Output:
The floor of 2.8 is 2
The floor of -2.8 is -3*/
double MathLog( double x)
計算對數
:: 輸入參數
x - 要處理的值
示例:
double x=9000.0,y;
y=MathLog(x);
Print("MathLog(",x,") = ", y);
//Output: MathLog(9000)=9.10498
double MathMax( double value1, double value2)
計算兩個值中的最大值
:: 輸入參數
value1 - 第一個值
value2 - 第二個值
示例:
double result=MathMax(1.08,Bid);
double MathMin( double value1, double value2)
計算兩個值中的最小值
:: 輸入參數
value1 - 第一個值
value2 - 第二個值
示例:
double result=MathMin(1.08,Ask);
double MathMod( double value, double value2)
計算兩個值相除的余數
:: 輸入參數
value - 被除數
value2 - 除數
示例:
double x=-10.0,y=3.0,z;
z=MathMod(x,y);
Print("The remainder of ",x," / ",y," is ",z);
//Output: The remainder of -10 / 3 is -1
double MathPow( double base, double exponent)
計算指數
:: 輸入參數
base - 基數
exponent - 指數
示例:
double x=2.0,y=3.0,z;
z=MathPow(x,y);
Printf(x," to the power of ",y," is ", z);
//Output: 2 to the power of 3 is 8
int MathRand( )
取隨機數
示例:
MathSrand(LocalTime());
// Display 10 numbers.
for(int i=0;i<10;i++ )
Print("random value ", MathRand());
double MathRound( double value)
取四捨五入的值
:: 輸入參數
value - 要處理的值
示例:
double y=MathRound(2.8);
Print("The round of 2.8 is ",y);
y=MathRound(2.4);
Print("The round of -2.4 is ",y);
//Output: The round of 2.8 is 3
// The round of -2.4 is -2
double MathSin( double value)
計算正弦數
:: 輸入參數
value - 要處理的值
示例:
double pi=3.1415926535;
double x, y;
x=pi/2;
y=MathSin(x);
Print("MathSin(",x,") = ",y);
y=MathCos(x);
Print("MathCos(",x,") = ",y);
//Output: MathSin(1.5708)=1
// MathCos(1.5708)=0
double MathSqrt( double x)
計算平方根
:: 輸入參數
x - 要處理的值
示例:
double question=45.35, answer;
answer=MathSqrt(question);
if(question<0)
Print("Error: MathSqrt returns ",answer," answer");
else
Print("The square root of ",question," is ", answer);
//Output: The square root of 45.35 is 6.73
void MathSrand( int seed)
通過Seed產生隨機數
:: 輸入參數
seed - 隨機數的種子
示例:
MathSrand(LocalTime());
// Display 10 numbers.
for(int i=0;i<10;i++ )
Print("random value ", MathRand());
double MathTan( double x)
計算正切值
:: 輸入參數
x - 要計算的角度
示例:
double pi=3.1415926535;
double x,y;
x=MathTan(pi/4);
Print("MathTan(",pi/4," = ",x);
//Output: MathTan(0.7856)=1
物體函數 [Object Functions]
bool ObjectCreate( string name, int type, int window, datetime time1, double price1, datetime time2=0, double price2=0, datetime time3=0, double price3=0)
創建物件
:: 輸入參數
name - 物件名稱
type - 物件類型.
window - 物件所在窗口的索引值
time1 - 時間點1
price1 - 價格點1
time2 - 時間點2
price2 - 價格點2
time3 - 時間點3
price3 - 價格點3
示例:
// new text object
if(!ObjectCreate("text_object", OBJ_TEXT, 0, D'2004.02.20 12:30', 1.0045))
{
Print("error: can't create text_object! code #",GetLastError());
return(0);
}
// new label object
if(!ObjectCreate("label_object", OBJ_LABEL, 0, 0, 0))
{
Print("error: can't create label_object! code #",GetLastError());
return(0);
}
ObjectSet("label_object", OBJPROP_XDISTANCE, 200);
ObjectSet("label_object", OBJPROP_YDISTANCE, 100);
bool ObjectDelete( string name)
刪除物件
:: 輸入參數
name - 物件名稱
示例:
ObjectDelete("text_object");
string ObjectDescription( string name)
返回物件描述
:: 輸入參數
name - 物件名稱
示例:
// writing chart's object list to the file
int handle, total;
string obj_name,fname;
// file name
fname="objlist_"+Symbol();
handle=FileOpen(fname,FILE_CSV|FILE_WRITE);
if(handle!=false)
{
total=ObjectsTotal();
for(int i=-;i<TOTAL;I++)
{
obj_name=ObjectName(i);
FileWrite(handle,"Object "+obj_name+" description= "+ObjectDescription(obj_name));
}
FileClose(handle);
}
int ObjectFind( string name)
尋找物件，返回物件的索引值
:: 輸入參數
name - 物件名稱
示例:
if(ObjectFind("line_object2")!=win_idx) return(0);
double ObjectGet( string name, int index)
獲取物件的值
:: 輸入參數
name - 物件名稱
index - 取值屬性的索引
示例:
color oldColor=ObjectGet("hline12", OBJPROP_COLOR);
string ObjectGetFiboDescription( string name, int index)
取物件的斐波納契數列地描述
:: 輸入參數
name - 物件名稱
index - 斐波納契數列的等級索引
示例:
#include
...
string text;
for(int i=0;i<32;i++)
{
text=ObjectGetFiboDescription(MyObjectName,i);
//---- check. may be objects's level count less than 32
if(GetLastError()!=ERR_NO_ERROR) break;
Print(MyObjectName,"level: ",i," description: ",text);
}
int ObjectGetShiftByValue( string name, double value)
取物件的位移值
:: 輸入參數
name - 物件名稱
value - 價格
示例:
int shift=ObjectGetShiftByValue("MyTrendLine#123", 1.34);
double ObjectGetValueByShift( string name, int shift)
取物件位移後的值
:: 輸入參數
name - 物件名稱
shift - 位移數
示例:
double price=ObjectGetValueByShift("MyTrendLine#123", 11);
bool ObjectMove( string name, int point, datetime time1, double price1)
移動物件
:: 輸入參數
name - 物件名稱
point - 調整的索引
time1 - 新的時間
price1 - 新的價格
示例:
ObjectMove("MyTrend", 1, D'2005.02.25 12:30', 1.2345);
string ObjectName( int index)
取物件名稱
:: 輸入參數
index - 物件的索引
示例:
int obj_total=ObjectsTotal();
string name;
for(int i=0;i<OBJ_TOTAL;I++)
{
name=ObjectName(i);
Print(i,"Object name is " + name);
}
int ObjectsDeleteAll( int window, int type=EMPTY)
刪除所有物件
:: 輸入參數
window - 物件所在的窗口索引
type - 刪除物件的類型
示例:
ObjectsDeleteAll(2, OBJ_HLINE); // removes all horizontal line objects from window 3 (index 2).
bool ObjectSet( string name, int index, double value)
設置物件的值
:: 輸入參數
name - 物件的名稱
index - 物件屬性的索引值
value - 新的屬性值
示例:
// moving first coord to last bar time
ObjectSet("MyTrend", OBJPROP_TIME1, Time[0]);
// setting second fibo level
ObjectSet("MyFibo", OBJPROP_FIRSTLEVEL+1, 1.234);
// setting object visibility. object will be shown only on 15 minute and 1 hour charts
ObjectSet("MyObject", OBJPROP_TIMEFRAMES, OBJ_PERIOD_M15 | OBJ_PERIOD_H1);
bool ObjectSetFiboDescription( string name, int index, string text)
設置物件斐波納契數列的描述
:: 輸入參數
name - 物件的名稱
index - 物件斐波納契數列的索引值
text - 新的描述
示例:
ObjectSetFiboDescription("MyFiboObject,2,"Second line");
bool ObjectSetText( string name, string text, int font_size, string font=NULL, color text_color=CLR_NONE)
設置物件的描述
:: 輸入參數
name - 物件的名稱
text - 文本
font_size - 字體大小
font - 字體名稱
text_color - 字體顏色
示例:
ObjectSetText("text_object", "Hello world!", 10, "Times New Roman", Green);
void ObjectsRedraw( )
重繪所有物件
示例:
ObjectsRedraw();
int ObjectsTotal( )
取物件總數
示例:
int obj_total=ObjectsTotal();
string name;
for(int i=0;i<OBJ_TOTAL;I++)
{
name=ObjectName(i);
Print(i,"Object name is for object #",i," is " + name);
}
int ObjectType( string name)
取物件類型
:: 輸入參數
name - 物件的名稱
示例:
if(ObjectType("line_object2")!=OBJ_HLINE) return(0);
預定義變量 [Pre-defined Variables]
double Ask
通貨的買入價
示例:
if(iRSI(NULL,0,14,PRICE_CLOSE,0)<25)
{
OrderSend(Symbol(),OP_BUY,Lots,Ask,3,Ask-StopLoss*Point,Ask+TakeProfit*Point,
"My order #2",3,D'2005.10.10 12:30',Red);
return;
}
int Bars
返回圖表中的柱數
示例:
int counter=1;
for(int i=1;i<=Bars;i++)
{
Print(Close[i-1]);
}
double Bid
通貨的賣價
示例:
if(iRSI(NULL,0,14,PRICE_CLOSE,0)>75)
{
OrderSend("EURUSD",OP_SELL,Lots,Bid,3,Bid+StopLoss*Point,Bid-TakeProfit*Point,
"My order #2",3,D'2005.10.10 12:30',Red);
return(0);
}
double Close[]
返回指定索引位置的收盤價格
示例:
int handle, bars=Bars;
handle=FileOpen("file.csv",FILE_CSV|FILE_WRITE,';');
if(handle>0)
{
// write table columns headers
FileWrite(handle, "Time;Open;High;Low;Close;Volume");
// write data
for(int i=0; i
FileWrite(handle, Time, Open, High, Low, Close, Volume);
FileClose(handle);
}
int Digits
返回當前通貨的匯率小數位
示例:
Print(DoubleToStr(Close[i-1], Digits));
double High[]
返回指定索引位置的最高價格
示例:
int handle, bars=Bars;
handle=FileOpen("file.csv", FILE_CSV|FILE_WRITE, ';');
if(handle>0)
{
// write table columns headers
FileWrite(handle, "Time;Open;High;Low;Close;Volume");
// write data
for(int i=0; i
FileWrite(handle, Time, Open, High, Low, Close, Volume);
FileClose(handle);
}
double Low[]
返回指定索引位置的最低價格
示例:
int handle, bars=Bars;
handle=FileOpen("file.csv", FILE_CSV|FILE_WRITE, ";");
if(handle>0)
{
// write table columns headers
FileWrite(handle, "Time;Open;High;Low;Close;Volume");
// write data
for(int i=0; i
FileWrite(handle, Time, Open, High, Low, Close, Volume);
FileClose(handle);
}
double Open[]
返回指定索引位置的開盤價格
示例:
int handle, bars=Bars;
handle=FileOpen("file.csv", FILE_CSV|FILE_WRITE, ';');
if(handle>0)
{
// write table columns headers
FileWrite(handle, "Time;Open;High;Low;Close;Volume");
// write data
for(int i=0; i
FileWrite(handle, Time, Open, High, Low, Close, Volume);
FileClose(handle);
}
double Point
返回當前圖表的點值
示例:
OrderSend(Symbol(),OP_BUY,Lots,Ask,3,0,Ask+TakeProfit*Point,Red);
datetime Time[]
返回指定索引位置的時間
示例:
int handle, bars=Bars;
handle=FileOpen("file.csv", FILE_CSV|FILE_WRITE, ';');
if(handle>0)
{
// write table columns headers
FileWrite(handle, "Time;Open;High;Low;Close;Volume");
// write data
for(int i=0; i
FileWrite(handle, Time, Open, High, Low, Close, Volume);
FileClose(handle);
}
double Volume[]
返回指定索引位置的成交量
示例:
int handle, bars=Bars;
handle=FileOpen("file.csv", FILE_CSV|FILE_WRITE, ';');
if(handle>0)
{
// write table columns headers
FileWrite(handle, "Time;Open;High;Low;Close;Volume");
// erite data
for(int i=0; i
FileWrite(handle, Time, Open, High, Low, Close, Volume);
FileClose(handle);
)
字符串函數 [String Functions]
string StringConcatenate( ... )
字符串連接
:: 輸入參數
... - 任意值，用逗號分割
示例:
string text;
text=StringConcatenate("Account free margin is ", AccountFreeMargin(), "Current time is ", TimeToStr(CurTime()));
// slow text="Account free margin is " + AccountFreeMargin() + "Current time is " + TimeToStr(CurTime())
Print(text);
int StringFind( string text, string matched_text, int start=0)
在字符串中尋找符合條件的字符串返回索引位置
:: 輸入參數
text - 被搜索的字符串
matched_text - 需要搜索的字符串
start - 搜索開始索引位置
示例:
string text="The quick brown dog jumps over the lazy fox";
int index=StringFind(text, "dog jumps", 0);
if(index!=16)
Print("oops!");
int StringGetChar( string text, int pos)
取字符串中的某一個字符
:: 輸入參數
text - 字符串
pos - 取字符的位置
示例:
int char_code=StringGetChar("abcdefgh", 3);
// char code 'c' is 99
int StringLen( string text)
返回字符串長度
:: 輸入參數
text - 字符串
示例:
string str="some text";
if(StringLen(str)<5) return(0);
string StringSetChar( string text, int pos, int value)
在字符串中設置一個字符
:: 輸入參數
text - 字符串
pos - 設置字符的位置
value - 新的字符
示例:
string str="abcdefgh";
string str1=StringSetChar(str, 3, 'D');
// str1 is "abcDefgh"
string StringSubstr( string text, int start, int count=EMPTY)
從字符串中截取一段字符串
:: 輸入參數
text - 字符串
start - 開始索引位置
count - 截取字符數
示例:
string text="The quick brown dog jumps over the lazy fox";
string substr=StringSubstr(text, 4, 5);
// subtracted string is "quick" word
string StringTrimLeft( string text)
字符串左側去空格
:: 輸入參數
text - 字符串
示例:
string str1=" Hello world ";
string str2=StringTrimLeft(str);
// after trimming the str2 variable will be "Hello World "
string StringTrimRight( string text)
字符串右側去空格
:: 輸入參數
text - 字符串
示例:
string str1=" Hello world ";
string str2=StringTrimRight(str);
// after trimming the str2 variable will be " Hello World"
標准常量 [Standard Constants]
Applied price enumeration
價格類型枚舉
示例:
Constant Value Description
PRICE_CLOSE 0 收盤價
PRICE_OPEN 1 開盤價
PRICE_HIGH 2 最高價
PRICE_LOW 3 最低價
PRICE_MEDIAN 4 最高價和最低價的平均價
PRICE_TYPICAL 5 最高價、最低價和收盤價的平均價
PRICE_WEIGHTED 6 開、收盤價和最高最低價的平均價
Drawing shape style enumeration
畫圖形狀樣式枚舉，
形狀：
Constant Value Description
DRAW_LINE 0 Drawing line.
DRAW_SECTION 1 Drawing sections.
DRAW_HISTOGRAM 2 Drawing histogram.
DRAW_ARROW 3 Drawing arrows (symbols).
DRAW_NONE 12 No drawing.
樣式：
Constant Value Description
STYLE_SOLID 0 The pen is solid.
STYLE_DASH 1 The pen is dashed.
STYLE_DOT 2 The pen is dotted.
STYLE_DASHDOT 3 The pen has alternating dashes and dots.
STYLE_DASHDOTDOT 4 The pen has alternating dashes and double dots.
Error codes
錯誤代碼，使用GetLastError()可返回錯誤代碼，錯誤代碼定義在stderror.mqh文件裡，可以使用ErrorDescription()取得說明
#include
void SendMyMessage(string text)
{
int check;
SendMail("some subject", text);
check=GetLastError();
if(check!=ERR_NO_MQLERROR) Print("Cannot send message, error: ",ErrorDescription(check));
}
交易服務器返回的錯誤:
Constant Value Description
ERR_NO_ERROR 0 No error returned.
ERR_NO_RESULT 1 No error returned, but the result is unknown.
ERR_COMMON_ERROR 2 Common error.
ERR_INVALID_TRADE_PARAMETERS 3 Invalid trade parameters.
ERR_SERVER_BUSY 4 Trade server is busy.
ERR_OLD_VERSION 5 Old version of the client terminal.
ERR_NO_CONNECTION 6 No connection with trade server.
ERR_NOT_ENOUGH_RIGHTS 7 Not enough rights.
ERR_TOO_FREQUENT_REQUESTS 8 Too frequent requests.
ERR_MALFUNCTIONAL_TRADE 9 Malfunctional trade operation.
ERR_ACCOUNT_DISABLED 64 Account disabled.
ERR_INVALID_ACCOUNT 65 Invalid account.
ERR_TRADE_TIMEOUT 128 Trade timeout.
ERR_INVALID_PRICE 129 Invalid price.
ERR_INVALID_STOPS 130 Invalid stops.
ERR_INVALID_TRADE_VOLUME 131 Invalid trade volume.
ERR_MARKET_CLOSED 132 Market is closed.
ERR_TRADE_DISABLED 133 Trade is disabled.
ERR_NOT_ENOUGH_MONEY 134 Not enough money.
ERR_PRICE_CHANGED 135 Price changed.
ERR_OFF_QUOTES 136 Off quotes.
ERR_BROKER_BUSY 137 Broker is busy.
ERR_REQUOTE 138 Requote.
ERR_ORDER_LOCKED 139 Order is locked.
ERR_LONG_POSITIONS_ONLY_ALLOWED 140 Long positions only allowed.
ERR_TOO_MANY_REQUESTS 141 Too many requests.
ERR_TRADE_MODIFY_DENIED 145 Modification denied because order too close to market.
ERR_TRADE_CONTEXT_BUSY 146 Trade context is busy.
MT4返回的運行錯誤:
Constant Value Description
ERR_NO_MQLERROR 4000 No error.
ERR_WRONG_FUNCTION_POINTER 4001 Wrong function pointer.
ERR_ARRAY_INDEX_OUT_OF_RANGE 4002 Array index is out of range.
ERR_NO_MEMORY_FOR_FUNCTION_CALL_STACK 4003 No memory for function call stack.
ERR_RECURSIVE_STACK_OVERFLOW 4004 Recursive stack overflow.
ERR_NOT_ENOUGH_STACK_FOR_PARAMETER 4005 Not enough stack for parameter.
ERR_NO_MEMORY_FOR_PARAMETER_STRING 4006 No memory for parameter string.
ERR_NO_MEMORY_FOR_TEMP_STRING 4007 No memory for temp string.
ERR_NOT_INITIALIZED_STRING 4008 Not initialized string.
ERR_NOT_INITIALIZED_ARRAYSTRING 4009 Not initialized string in array.
ERR_NO_MEMORY_FOR_ARRAYSTRING 4010 No memory for array string.
ERR_TOO_LONG_STRING 4011 Too long string.
ERR_REMAINDER_FROM_ZERO_DIVIDE 4012 Remainder from zero divide.
ERR_ZERO_DIVIDE 4013 Zero divide.
ERR_UNKNOWN_COMMAND 4014 Unknown command.
ERR_WRONG_JUMP 4015 Wrong jump (never generated error).
ERR_NOT_INITIALIZED_ARRAY 4016 Not initialized array.
ERR_DLL_CALLS_NOT_ALLOWED 4017 DLL calls are not allowed.
ERR_CANNOT_LOAD_LIBRARY 4018 Cannot load library.
ERR_CANNOT_CALL_FUNCTION 4019 Cannot call function.
ERR_EXTERNAL_EXPERT_CALLS_NOT_ALLOWED 4020 Expert function calls are not allowed.
ERR_NOT_ENOUGH_MEMORY_FOR_RETURNED_STRING 4021 Not enough memory for temp string returned from function.
ERR_SYSTEM_BUSY 4022 System is busy (never generated error).
ERR_INVALID_FUNCTION_PARAMETERS_COUNT 4050 Invalid function parameters count.
ERR_INVALID_FUNCTION_PARAMETER_VALUE 4051 Invalid function parameter value.
ERR_STRING_FUNCTION_INTERNAL_ERROR 4052 String function internal error.
ERR_SOME_ARRAY_ERROR 4053 Some array error.
ERR_INCORRECT_SERIES_ARRAY_USING 4054 Incorrect series array using.
ERR_CUSTOM_INDICATOR_ERROR 4055 Custom indicator error.
ERR_INCOMPATIBLE_ARRAYS 4056 Arrays are incompatible.
ERR_GLOBAL_VARIABLES_PROCESSING_ERROR 4057 Global variables processing error.
ERR_GLOBAL_VARIABLE_NOT_FOUND 4058 Global variable not found.
ERR_FUNCTION_NOT_ALLOWED_IN_TESTING_MODE 4059 Function is not allowed in testing mode.
ERR_FUNCTION_NOT_CONFIRMED 4060 Function is not confirmed.
ERR_SEND_MAIL_ERROR 4061 Send mail error.
ERR_STRING_PARAMETER_EXPECTED 4062 String parameter expected.
ERR_INTEGER_PARAMETER_EXPECTED 4063 Integer parameter expected.
ERR_DOUBLE_PARAMETER_EXPECTED 4064 Double parameter expected.
ERR_ARRAY_AS_PARAMETER_EXPECTED 4065 Array as parameter expected.
ERR_HISTORY_WILL_UPDATED 4066 Requested history data in updating state.
ERR_END_OF_FILE 4099 End of file.
ERR_SOME_FILE_ERROR 4100 Some file error.
ERR_WRONG_FILE_NAME 4101 Wrong file name.
ERR_TOO_MANY_OPENED_FILES 4102 Too many opened files.
ERR_CANNOT_OPEN_FILE 4103 Cannot open file.
ERR_INCOMPATIBLE_ACCESS_TO_FILE 4104 Incompatible access to a file.
ERR_NO_ORDER_SELECTED 4105 No order selected.
ERR_UNKNOWN_SYMBOL 4106 Unknown symbol.
ERR_INVALID_PRICE_PARAM 4107 Invalid price.
ERR_INVALID_TICKET 4108 Invalid ticket.
ERR_TRADE_NOT_ALLOWED 4109 Trade is not allowed.
ERR_LONGS__NOT_ALLOWED 4110 Longs are not allowed.
ERR_SHORTS_NOT_ALLOWED 4111 Shorts are not allowed.
ERR_OBJECT_ALREADY_EXISTS 4200 Object exists already.
ERR_UNKNOWN_OBJECT_PROPERTY 4201 Unknown object property.
ERR_OBJECT_DOES_NOT_EXIST 4202 Object does not exist.
ERR_UNKNOWN_OBJECT_TYPE 4203 Unknown object type.
ERR_NO_OBJECT_NAME 4204 No object name.
ERR_OBJECT_COORDINATES_ERROR 4205 Object coordinates error.
ERR_NO_SPECIFIED_SUBWINDOW 4206 No specified subwindow.
Ichimoku Kinko Hyo modes enumeration
Ichimoku指標模式枚舉
Constant Value Description
MODE_TENKANSEN 1 Tenkan-sen.
MODE_KIJUNSEN 2 Kijun-sen.
MODE_SENKOUSPANA 3 Senkou Span A.
MODE_SENKOUSPANB 4 Senkou Span B.
MODE_CHINKOUSPAN 5 Chinkou Span.
Indicators line identifiers
指標線標示符
指標線模式，使用在 iMACD(), iRVI() 和 iStochastic() 中:
Constant Value Description
MODE_MAIN 0 Base indicator line.
MODE_SIGNAL 1 Signal line.
指標線模式，使用在 iADX() 中:
Constant Value Description
MODE_MAIN 0 Base indicator line.
MODE_PLUSDI 1 +DI indicator line.
MODE_MINUSDI 2 -DI indicator line.
指標線模式，使用在 iBands(), iEnvelopes(), iEnvelopesOnArray(), iFractals() and iGator() 中:
Constant Value Description
MODE_UPPER 1 Upper line.
MODE_LOWER 2 Lower line.
Market information identifiers
市場信息標識
Constant Value Description
MODE_LOW 1 Low day price.
MODE_HIGH 2 High day price.
MODE_TIME 5 The last incoming quotation time.
MODE_BID 9 Last incoming bid price.
MODE_ASK 10 Last incoming ask price.
MODE_POINT 11 Point size.
MODE_DIGITS 12 Digits after decimal point.
MODE_SPREAD 13 Spread value in points.
MODE_STOPLEVEL 14 Stop level in points.
MODE_LOTSIZE 15 Lot size in the base currency.
MODE_TICKVALUE 16 Tick value.
MODE_TICKSIZE 17 Tick size.
MODE_SWAPLONG 18 Swap of the long position.
MODE_SWAPSHORT 19 Swap of the short position.
MODE_STARTING 20 Market starting date (usually used for future markets).
MODE_EXPIRATION 21 Market expiration date (usually used for future markets).
MODE_TRADEALLOWED 22 Trade is allowed for the symbol.
MessageBox return codes
消息窗口返回值
Constant Value Description
IDOK 1 OK button was selected.
IDCANCEL 2 Cancel button was selected.
IDABORT 3 Abort button was selected.
IDRETRY 4 Retry button was selected.
IDIGNORE 5 Ignore button was selected.
IDYES 6 Yes button was selected.
IDNO 7 No button was selected.
IDTRYAGAIN 10 Try Again button was selected.
IDCONTINUE 11 Continue button was selected.
MessageBox behavior flags
消息窗口行為代碼
消息窗口顯示的按鈕種類:
Constant Value Description
MB_OK 0x00000000 The message box contains one push button: OK. This is the default.
MB_OKCANCEL 0x00000001 The message box contains two push buttons: OK and Cancel.
MB_ABORTRETRYIGNORE 0x00000002 The message box contains three push buttons: Abort, Retry, and Ignore.
MB_YESNOCANCEL 0x00000003 The message box contains three push buttons: Yes, No, and Cancel.
MB_YESNO 0x00000004 The message box contains two push buttons: Yes and No.
MB_RETRYCANCEL 0x00000005 The message box contains two push buttons: Retry and Cancel.
MB_CANCELTRYCONTINUE 0x00000006 Windows 2000: The message box contains three push buttons: Cancel, Try Again, Continue. Use this message box type instead of MB_ABORTRETRYIGNORE.
消息窗口顯示圖標的類型:
Constant Value Description
MB_ICONSTOP, MB_ICONERROR, MB_ICONHAND 0x00000010 A stop-sign icon appears in the message box.
MB_ICONQUESTION 0x00000020 A question-mark icon appears in the message box.
MB_ICONEXCLAMATION, MB_ICONWARNING 0x00000030 An exclamation-point icon appears in the message box.
MB_ICONINFORMATION, MB_ICONASTERISK 0x00000040 An icon consisting of a lowercase letter i in a circle appears in the message box.
消息窗口默認按鈕設置:
Constant Value Description
MB_DEFBUTTON1 0x00000000 The first button is the default button. MB_DEFBUTTON1 is the default unless MB_DEFBUTTON2, MB_DEFBUTTON3, or MB_DEFBUTTON4 is specified.
MB_DEFBUTTON2 0x00000100 The second button is the default button.
MB_DEFBUTTON3 0x00000200 The third button is the default button.
MB_DEFBUTTON4 0x00000300 The fourth button is the default button.
Moving Average method enumeration
移動平均線模式枚舉，iAlligator(), iEnvelopes(), iEnvelopesOnArray, iForce(), iGator(), iMA(), iMAOnArray(), iStdDev(), iStdDevOnArray(), iStochastic()這些會調用此枚舉
Constant Value Description
MODE_SMA 0 Simple moving average,
MODE_EMA 1 Exponential moving average,
MODE_SMMA 2 Smoothed moving average,
MODE_LWMA 3 Linear weighted moving average.
Object properties enumeration
物件屬性枚舉
Constant Value Description
OBJPROP_TIME1 0 Datetime value to set/get first coordinate time part.
OBJPROP_PRICE1 1 Double value to set/get first coordinate price part.
OBJPROP_TIME2 2 Datetime value to set/get second coordinate time part.
OBJPROP_PRICE2 3 Double value to set/get second coordinate price part.
OBJPROP_TIME3 4 Datetime value to set/get third coordinate time part.
OBJPROP_PRICE3 5 Double value to set/get third coordinate price part.
OBJPROP_COLOR 6 Color value to set/get object color.
OBJPROP_STYLE 7 Value is one of STYLE_SOLID, STYLE_DASH, STYLE_DOT, STYLE_DASHDOT, STYLE_DASHDOTDOT constants to set/get object line style.
OBJPROP_WIDTH 8 Integer value to set/get object line width. Can be from 1 to 5.
OBJPROP_BACK 9 Boolean value to set/get background drawing flag for object.
OBJPROP_RAY 10 Boolean value to set/get ray flag of object.
OBJPROP_ELLIPSE 11 Boolean value to set/get ellipse flag for fibo arcs.
OBJPROP_SCALE 12 Double value to set/get scale object property.
OBJPROP_ANGLE 13 Double value to set/get angle object property in degrees.
OBJPROP_ARROWCODE 14 Integer value or arrow enumeration to set/get arrow code object property.
OBJPROP_TIMEFRAMES 15 Value can be one or combination (bitwise addition) of object visibility constants to set/get timeframe object property.
OBJPROP_DEVIATION 16 Double value to set/get deviation property for Standard deviation objects.
OBJPROP_FONTSIZE 100 Integer value to set/get font size for text objects.
OBJPROP_CORNER 101 Integer value to set/get anchor corner property for label objects. Must be from 0-3.
OBJPROP_XDISTANCE 102 Integer value to set/get anchor X distance object property in pixels.
OBJPROP_YDISTANCE 103 Integer value is to set/get anchor Y distance object property in pixels.
OBJPROP_FIBOLEVELS 200 Integer value to set/get Fibonacci object level count. Can be from 0 to 32.
OBJPROP_FIRSTLEVEL+ n 210 Fibonacci object level index, where n is level index to set/get. Can be from 0 to 31.
Object type enumeration
物件類型枚舉
Constant Value Description
OBJ_VLINE 0 Vertical line. Uses time part of first coordinate.
OBJ_HLINE 1 Horizontal line. Uses price part of first coordinate.
OBJ_TREND 2 Trend line. Uses 2 coordinates.
OBJ_TRENDBYANGLE 3 Trend by angle. Uses 1 coordinate. To set angle of line use ObjectSet() function.
OBJ_REGRESSION 4 Regression. Uses time parts of first two coordinates.
OBJ_CHANNEL 5 Channel. Uses 3 coordinates.
OBJ_STDDEVCHANNEL 6 Standard deviation channel. Uses time parts of first two coordinates.
OBJ_GANNLINE 7 Gann line. Uses 2 coordinate, but price part of second coordinate ignored.
OBJ_GANNFAN 8 Gann fan. Uses 2 coordinate, but price part of second coordinate ignored.
OBJ_GANNGRID 9 Gann grid. Uses 2 coordinate, but price part of second coordinate ignored.
OBJ_FIBO 10 Fibonacci retracement. Uses 2 coordinates.
OBJ_FIBOTIMES 11 Fibonacci time zones. Uses 2 coordinates.
OBJ_FIBOFAN 12 Fibonacci fan. Uses 2 coordinates.
OBJ_FIBOARC 13 Fibonacci arcs. Uses 2 coordinates.
OBJ_EXPANSION 14 Fibonacci expansions. Uses 3 coordinates.
OBJ_FIBOCHANNEL 15 Fibonacci channel. Uses 3 coordinates.
OBJ_RECTANGLE 16 Rectangle. Uses 2 coordinates.
OBJ_TRIANGLE 17 Triangle. Uses 3 coordinates.
OBJ_ELLIPSE 18 Ellipse. Uses 2 coordinates.
OBJ_PITCHFORK 19 Andrews pitchfork. Uses 3 coordinates.
OBJ_CYCLES 20 Cycles. Uses 2 coordinates.
OBJ_TEXT 21 Text. Uses 1 coordinate.
OBJ_ARROW 22 Arrows. Uses 1 coordinate.
OBJ_LABEL 23 Text label. Uses 1 coordinate in pixels.
Object visibility enumeration
物件顯示枚舉
Constant Value Description
OBJ_PERIOD_M1 0x0001 Object shown is only on 1-minute charts.
OBJ_PERIOD_M5 0x0002 Object shown is only on 5-minute charts.
OBJ_PERIOD_M15 0x0004 Object shown is only on 15-minute charts.
OBJ_PERIOD_M30 0x0008 Object shown is only on 30-minute charts.
OBJ_PERIOD_H1 0x0010 Object shown is only on 1-hour charts.
OBJ_PERIOD_H4 0x0020 Object shown is only on 4-hour charts.
OBJ_PERIOD_D1 0x0040 Object shown is only on daily charts.
OBJ_PERIOD_W1 0x0080 Object shown is only on weekly charts.
OBJ_PERIOD_MN1 0x0100 Object shown is only on monthly charts.
OBJ_ALL_PERIODS 0x01FF Object shown is on all timeframes.
NULL 0 Object shown is on all timeframes.
EMPTY -1 Hidden object on all timeframes.
Predefined Arrow codes enumeration
預定義箭頭代碼枚舉
Constant Value Description
SYMBOL_THUMBSUP 67 Thumb up symbol ( C ).
SYMBOL_THUMBSDOWN 68 Thumb down symbol ( D ).
SYMBOL_ARROWUP 241 Arrow up symbol ( ñ ).
SYMBOL_ARROWDOWN 242 Arrow down symbol ( ò ).
SYMBOL_STOPSIGN 251 Stop sign symbol ( û ).
SYMBOL_CHECKSIGN 252 Check sign symbol ( ü ).
Constant Value Description
1 Upwards arrow with tip rightwards ( ↱ ).
2 Downwards arrow with tip rightwards ( ↳ ).
3 Left pointing triangle ( ◄ ).
4 En Dash symbol (–).
SYMBOL_LEFTPRICE 5 Left sided price label.
SYMBOL_RIGHTPRICE 6 Right sided price label.
Series array identifier
系列數組標識符
Constant Value Description
MODE_OPEN 0 Open price.
MODE_LOW 1 Low price.
MODE_HIGH 2 High price.
MODE_CLOSE 3 Close price.
MODE_VOLUME 4 Volume, used in Lowest() and Highest() functions.
MODE_TIME 5 Bar open time, used in ArrayCopySeries() function.
Special constants
特殊常量
Constant Value Description
NULL 0 Indicates empty state of the string.
EMPTY -1 Indicates empty state of the parameter.
EMPTY_VALUE 0x7FFFFFFF Default custom indicator empty value.
CLR_NONE 0xFFFFFFFF Indicates empty state of colors.
WHOLE_ARRAY 0 Used with array functions. Indicates that all array elements will be processed.
Time frame enumeration
特殊常量
Constant Value Description
PERIOD_M1 1 1 minute.
PERIOD_M5 5 5 minutes.
PERIOD_M15 15 15 minutes.
PERIOD_M30 30 30 minutes.
PERIOD_H1 60 1 hour.
PERIOD_H4 240 4 hour.
PERIOD_D1 1440 Daily.
PERIOD_W1 10080 Weekly.
PERIOD_MN1 43200 Monthly.
0 (zero) 0 Time frame used on the chart.
Trade operation enumeration
交易類型
Constant Value Description
OP_BUY 0 Buying position.
OP_SELL 1 Selling position.
OP_BUYLIMIT 2 Buy limit pending position.
OP_SELLLIMIT 3 Sell limit pending position.
OP_BUYSTOP 4 Buy stop pending position.
OP_SELLSTOP 5 Sell stop pending position.
Uninitialize reason codes
末初始化理由代碼
Constant Value Description
REASON_REMOVE 1 Expert removed from chart.
REASON_RECOMPILE 2 Expert recompiled.
REASON_CHARTCHANGE 3 symbol or timeframe changed on the chart.
REASON_CHARTCLOSE 4 Chart closed.
REASON_PARAMETERS 5 Inputs parameters was changed by user.
REASON_ACCOUNT 6 Other account activated.
Wingdings symbols
圖形符號代碼
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
160 161 162 163 164 165 166 167 • 168 169 170 171 172 ¬ 173 174 175
176 177 178 179 180 181 182 • 183 184 185 186 187 188 189 190 191
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
Web colors table
顏色表
Black DarkGreen DarkSlateGray Olive Green Teal Navy Purple
Maroon Indigo MidnightBlue DarkBlue DarkOliveGreen SaddleBrown ForestGreen OliveDrab
SeaGreen DarkGoldenrod DarkSlateBlue Sienna MediumBlue Brown DarkTurquoise DimGray
LightSeaGreen DarkViolet FireBrick MediumVioletRed MediumSeaGreen Chocolate Crimson SteelBlue
Goldenrod MediumSpringGreen LawnGreen CadetBlue DarkOrchid YellowGreen LimeGreen OrangeRed
DarkOrange Orange Gold Yellow Chartreuse Lime SpringGreen Aqua
DeepSkyBlue Blue Magenta Red Gray SlateGray Peru BlueViolet
LightSlateGray DeepPink MediumTurquoise DodgerBlue Turquoise RoyalBlue SlateBlue DarkKhaki
IndianRed MediumOrchid GreenYellow MediumAquamarine DarkSeaGreen Tomato RosyBrown Orchid
MediumPurple PaleVioletRed Coral CornflowerBlue DarkGray SandyBrown MediumSlateBlue Tan
DarkSalmon BurlyWood HotPink Salmon Violet LightCoral SkyBlue LightSalmon
Plum Khaki LightGreen Aquamarine Silver LightSkyBlue LightSteelBlue LightBlue
PaleGreen Thistle PowderBlue PaleGoldenrod PaleTurquoise LightGrey Wheat NavajoWhite
Moccasin LightPink Gainsboro PeachPuff Pink Bisque LightGoldenRod BlanchedAlmond
LemonChiffon Beige AntiqueWhite PapayaWhip Cornsilk LightYellow LightCyan Linen
Lavender MistyRose OldLace WhiteSmoke Seashell Ivory Honeydew AliceBlue
LavenderBlush MintCream Snow White
技術指標調用 [Technical Indicator calls]
double iAC( string symbol, int timeframe, int shift)
計算 Bill Williams' Accelerator/Decelerator oscillator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
示例:
double result=iAC(NULL, 0, 1);
double iAD( string symbol, int timeframe, int shift)
計算 Accumulation/Distribution indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
示例:
double result=iAD(NULL, 0, 1);
double iAlligator( string symbol, int timeframe, int jaw_period, int jaw_shift, int teeth_period, int teeth_shift, int lips_period, int lips_shift, int ma_method, int applied_price, int mode, int shift)
計算 Bill Williams' Alligator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
jaw_period - 颚線周期
jaw_shift - 颚線位移
teeth_period - 齒線周期
teeth_shift - 齒線位移
lips_period - 唇線周期
lips_shift - 唇線位移
ma_method - 移動平均線種類
applied_price - 應用價格類型
mode - 來源模式，MODE_GATORJAW，MODE_GATORTEETH 或MODE_GATORLIPS
shift - 位移數
double jaw_val=iAlligator(NULl, 0, 13, 8, 8, 5, 5, 3, MODE_SMMA, PRICE_MEDIAN, MODE_GATORJAW, 1);
double iADX( string symbol, int timeframe, int period, int applied_price, int mode, int shift)
計算 Movement directional index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
applied_price - 應用價格類型
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
if(iADX(NULL,0,14,PRICE_HIGH,MODE_MAIN,0)>iADX(NULL,0,14,PRICE_HIGH,MODE_PLUSDI,0)) return(0);
double iATR( string symbol, int timeframe, int period, int shift)
計算 Indicator of the average true range 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
shift - 位移數
if(iATR(NULL,0,12,0)>iATR(NULL,0,20,0)) return(0);
double iAO( string symbol, int timeframe, int shift)
計算 Bill Williams' Awesome oscillator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
double val=iAO(NULL, 0, 2);
double iBearsPower( string symbol, int timeframe, int period, int applied_price, int shift)
計算 Bears Power indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
applied_price - 應用價格類型
shift - 位移數
double val=iBearsPower(NULL, 0, 13,PRICE_CLOSE,0);
double iBands( string symbol, int timeframe, int period, int deviation, int bands_shift, int applied_price, int mode, int shift)
計算 Bollinger bands indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
deviation - 背離
bands_shift - Bands位移
applied_price - 應用價格類型
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
if(iBands(NULL,0,20,2,0,PRICE_LOW,MODE_LOWER,0)>Low[0]) return(0);
double iBandsOnArray( double array[], int total, int period, double deviation, int bands_shift, int mode, int shift)
從數組中計算 Bollinger bands indicator 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
period - 周期
deviation - 背離
bands_shift - Bands位移
applied_price - 應用價格類型
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
if(iBands(NULL,0,20,2,0,PRICE_LOW,MODE_LOWER,0)>Low[0]) return(0);
double iBullsPower( string symbol, int timeframe, int period, int applied_price, int shift)
計算 Bulls Power indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
applied_price - 應用價格類型
shift - 位移數
double val=iBullsPower(NULL, 0, 13,PRICE_CLOSE,0);
double iCCI( string symbol, int timeframe, int period, int applied_price, int shift)
計算 Commodity channel index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
applied_price - 應用價格類型
shift - 位移數
if(iCCI(NULL,0,12,0)>iCCI(NULL,0,20,0)) return(0);
double iCCIOnArray( double array[], int total, int period, int shift)
從數組中計算 Commodity channel index 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
period - 周期
shift - 位移數
if(iCCIOnArray(ExtBuffer,total,12,0)>iCCI(NULL,0,20,PRICE_OPEN, 0)) return(0);
double iCustom( string symbol, int timeframe, string name, ... , int mode, int shift)
計算 自定義指標 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
name - 自定義指標名稱
... - 自定義指標參數
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double val=iCustom(NULL, 0, "SampleInd",13,1,0);
double iDeMarker( string symbol, int timeframe, int period, int shift)
計算 DeMarker indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
shift - 位移數
double val=iDeMarker(NULL, 0, 13, 1);
double iEnvelopes( string symbol, int timeframe, int ma_period, int ma_method, int ma_shift, int applied_price, double deviation, int mode, int shift)
計算 Envelopes indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
ma_period - 移動平均線周期
ma_method - 移動平均線模式
ma_shift - 移動平均線位移
applied_price - 應用價格類型
deviation - 背離
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double val=iEnvelopes(NULL, 0, 13,MODE_SMA,10,PRICE_CLOSE,0.2,MODE_UPPER,0);
double iEnvelopesOnArray( double array[], int total, int ma_period, int ma_method, int ma_shift, double deviation, int mode, int shift)
從數組中計算 Envelopes indicator 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
ma_period - 移動平均線周期
ma_method - 移動平均線模式
ma_shift - 移動平均線位移
deviation - 背離
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double val=iEnvelopesOnArray(ExtBuffer, 0, 13, MODE_SMA, 0.2, MODE_UPPER,0 );
double iForce( string symbol, int timeframe, int period, int ma_method, int applied_price, int shift)
計算 Force index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
ma_method - 移動平均線模式
applied_price - 應用價格類型
shift - 位移數
double val=iForce(NULL, 0, 13,MODE_SMA,PRICE_CLOSE,0);
double iFractals( string symbol, int timeframe, int mode, int shift)
計算 Fractals 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double val=iFractals(NULL, 0, MODE_UPPER,0);
double iGator( string symbol, int timeframe, int jaw_period, int jaw_shift, int teeth_period, int teeth_shift, int lips_period, int lips_shift, int ma_method, int applied_price, int mode, int shift)
計算 Fractals 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
jaw_period - 颚線周期
jaw_shift - 颚線位移
teeth_period - 齒線周期
teeth_shift - 齒線位移
lips_period - 唇線周期
lips_shift - 唇線位移
ma_method - 移動平均線種類
applied_price - 應用價格類型
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double jaw_val=iGator(NULL, 0, 13, 8, 8, 5, 5, 3, MODE_SMMA, PRICE_MEDIAN, MODE_UPPER, 1);
double iIchimoku( string symbol, int timeframe, int tenkan_sen, int kijun_sen, int senkou_span_b, int mode, int shift)
計算 Ichimoku Kinko Hyo 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
tenkan_sen - 轉換線
jkijun_sen - 基准線
senkou_span_b - 參考范圍b
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double tenkan_sen=iIchimoku(NULL, 0, 9, 26, 52, MODE_TENKANSEN, 1);
double iBWMFI( string symbol, int timeframe, int shift)
計算 Bill Williams Market Facilitation index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
double val=iBWMFI(NULL, 0, 0);
double iMomentum( string symbol, int timeframe, int period, int applied_price, int shift)
計算 Momentum indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
applied_price - 應用價格類型
shift - 位移數
if(iMomentum(NULL,0,12,PRICE_CLOSE,0)>iMomentum(NULL,0,20,PRICE_CLOSE,0)) return(0);
double iMomentumOnArray( double array[], int total, int period, int shift)
從數組中計算 Momentum indicator 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
period - 周期
shift - 位移數
if(iMomentumOnArray(mybuffer,100,12,0)>iMomentumOnArray(mubuffer,100,20,0)) return(0);
double iMFI( string symbol, int timeframe, int period, int shift)
計算 Money flow index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
shift - 位移數
if(iMFI(NULL,0,14,0)>iMFI(NULL,0,14,1)) return(0);
double iMA( string symbol, int timeframe, int period, int ma_shift, int ma_method, int applied_price, int shift)
計算 Moving average indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
ma_shift - 移動平均線位移
ma_method - 移動平均線模式
applied_price - 應用價格類型
shift - 位移數
AlligatorJawsBuffer=iMA(NULL,0,13,8,MODE_SMMA,PRICE_MEDIAN,i);
double iMAOnArray( double array[], int total, int period, int ma_shift, int ma_method, int shift)
從數組中計算 Moving average indicator 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
period - 周期
ma_shift - 移動平均線位移
ma_method - 移動平均線模式
shift - 位移數
double macurrent=iMAOnArray(ExtBuffer,0,5,0,MODE_LWMA,0);
double macurrentslow=iMAOnArray(ExtBuffer,0,10,0,MODE_LWMA,0);
double maprev=iMAOnArray(ExtBuffer,0,5,0,MODE_LWMA,1);
double maprevslow=iMAOnArray(ExtBuffer,0,10,0,MODE_LWMA,1);
//----
if(maprev=macurrentslow)
Alert("crossing up");
double iOsMA( string symbol, int timeframe, int fast_ema_period, int slow_ema_period, int signal_period, int applied_price, int shift)
計算 Moving Average of Oscillator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
fast_ema_period - 快均線周期
slow_ema_period - 慢均線周期
signal_period - 信號周期
applied_price - 應用價格類型
shift - 位移數
if(iOsMA(NULL,0,12,26,9,PRICE_OPEN,1)>iOsMA(NULL,0,12,26,9,PRICE_OPEN,0)) return(0);
double iMACD( string symbol, int timeframe, int fast_ema_period, int slow_ema_period, int signal_period, int applied_price, int mode, int shift)
計算 Moving averages convergence/divergence 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
fast_ema_period - 快均線周期
slow_ema_period - 慢均線周期
signal_period - 信號周期
applied_price - 應用價格類型
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
if(iMACD(NULL,0,12,26,9,PRICE_CLOSE,MODE_MAIN,0)>iMACD(NULL,0,12,26,9,PRICE_CLOSE,MODE_SIGNAL,0)) return(0);
double iOBV( string symbol, int timeframe, int applied_price, int shift)
計算 On Balance Volume indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
shift - 位移數
double val=iOBV(NULL, 0, PRICE_CLOSE, 1);
double iSAR( string symbol, int timeframe, double step, double maximum, int shift)
計算 On Balance Volume indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
step - 步幅
maximum - 最大值
shift - 位移數
if(iSAR(NULL,0,0.02,0.2,0)>Close[0]) return(0);
double iRSI( string symbol, void timeframe, int period, int applied_price, int shift)
計算 Relative strength index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
applied_price - 應用價格類型
shift - 位移數
if(iRSI(NULL,0,14,PRICE_CLOSE,0)>iRSI(NULL,0,14,PRICE_CLOSE,1)) return(0);
double iRSIOnArray( double array[], int total, int period, int shift)
從數組中計算 Relative strength index 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
period - 周期
shift - 位移數
if(iRSIOnBuffer(ExtBuffer,1000,14,0)>iRSI(NULL,0,14,PRICE_CLOSE,1)) return(0);
double iRVI( string symbol, int timeframe, int period, int mode, int shift)
計算 Relative Vigor index 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
double val=iRVI(NULL, 0, 10,MODE_MAIN,0);
double iStdDev( string symbol, int timeframe, int ma_period, int ma_method, int ma_shift, int applied_price, int shift)
計算 Standard Deviation indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
ma_period - 移動平均線周期
ma_method - 移動平均線模式
ma_shift - 移動平均線位移
applied_price - 應用價格類型
shift - 位移數
double val=iStdDev(NULL,0,10,MODE_EMA,0,PRICE_CLOSE,0);
double iStdDevOnArray( double array[], int total, int ma_period, int ma_method, int ma_shift, int shift)
從數組中計算 Standard Deviation indicator 的值
:: 輸入參數
array[] - 數組數據
total - 總數據數量
ma_period - 移動平均線周期
ma_method - 移動平均線模式
ma_shift - 移動平均線位移
shift - 位移數
double val=iStdDevOnArray(ExtBuffer,100,10,MODE_EMA,0,0);
double iStochastic( string symbol, int timeframe, int %Kperiod, int %Dperiod, int slowing, int method, int price_field, int mode, int shift)
計算 Stochastic oscillator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
%Kperiod - %K線周期
%Dperiod - %D線周期
slowing - 減速量
method - 移動平均線種類
price_field - 價格領域參數: 0 - Low/High or 1 - Close/Close.
mode - 來源模式，參見指標線分類枚舉
shift - 位移數
if(iStochastic(NULL,0,5,3,3,MODE_SMA,0,MODE_MAIN,0)>iStochastic(NULL,0,5,3,3,MODE_SMA,0,MODE_SIGNAL,0))
return(0);
double iWPR( string symbol, int timeframe, int period, int shift)
計算 Larry William's percent range indicator 的值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
period - 周期
shift - 位移數
if(iWPR(NULL,0,14,0)>iWPR(NULL,0,14,1)) return(0);
int iBars( string symbol, int timeframe)
返回制定圖表的數據數
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
Print("Bar count on the 'EUROUSD' symbol with PERIOD_H1 is",iBars("EUROUSD",PERIOD_H1));
int iBarShift( string symbol, int timeframe, datetime time, bool exact=false)
在制定圖表中搜索數據
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
time - 時間
exact - 是否精確的
datetime some_time=D'2004.03.21 12:00';
int shift=iBarShift("EUROUSD",PERIOD_M1,some_time);
Print("shift of bar with open time ",TimeToStr(some_time)," is ",shift);
double iClose( string symbol, int timeframe, int shift)
返回制定圖表的收盤價
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ", iOpen("USDCHF",PERIOD_H1,i),", ",
iHigh("USDCHF",PERIOD_H1,i),", ", iLow("USDCHF",PERIOD_H1,i),", ",
iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));
double iHigh( string symbol, int timeframe, int shift)
返回制定圖表的最高價
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ", iOpen("USDCHF",PERIOD_H1,i),", ",
iHigh("USDCHF",PERIOD_H1,i),", ", iLow("USDCHF",PERIOD_H1,i),", ",
iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));
double iLow( string symbol, int timeframe, int shift)
返回制定圖表的最低價
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ", iOpen("USDCHF",PERIOD_H1,i),", ",
iHigh("USDCHF",PERIOD_H1,i),", ", iLow("USDCHF",PERIOD_H1,i),", ",
iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));
double iOpen( string symbol, int timeframe, int shift)
返回制定圖表的開盤價
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ", iOpen("USDCHF",PERIOD_H1,i),", ",
iHigh("USDCHF",PERIOD_H1,i),", ", iLow("USDCHF",PERIOD_H1,i),", ",
iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));
datetime iTime( string symbol, int timeframe, int shift)
返回制定圖表的時間
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ", iOpen("USDCHF",PERIOD_H1,i),", ",
iHigh("USDCHF",PERIOD_H1,i),", ", iLow("USDCHF",PERIOD_H1,i),", ",
iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));
double iVolume( string symbol, int timeframe, int shift)
返回制定圖表的成交量
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
shift - 位移數
Print("Current bar for USDCHF H1: ",iTime("USDCHF",PERIOD_H1,i),", ", iOpen("USDCHF",PERIOD_H1,i),", ",
iHigh("USDCHF",PERIOD_H1,i),", ", iLow("USDCHF",PERIOD_H1,i),", ",
iClose("USDCHF",PERIOD_H1,i),", ", iVolume("USDCHF",PERIOD_H1,i));
int Highest( string symbol, int timeframe, int type, int count=WHOLE_ARRAY, int start=0)
返回制定圖表的某段數據的最高值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
type - 數據類型
count - 計算范圍
start - 開始點
double val;
// calculating the highest value in the range from 5 element to 25 element
// indicator charts symbol and indicator charts time frame
val=High[Highest(NULL,0,MODE_HIGH,20,4)];
int Lowest( string symbol, int timeframe, int type, int count=WHOLE_ARRAY, int start=0)
返回制定圖表的某段數據的最高值
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
type - 數據類型
count - 計算范圍
start - 開始點
double val=Low[Lowest(NULL,0,MODE_LOW,10,10)];
交易函數 [Trading Functions]
int HistoryTotal( )
返回歷史數據的數量
// retrieving info from trade history
int i,hstTotal=HistoryTotal();
for(i=0;i<HSTTOTAL;I++)
{
//---- check selection result
if(OrderSelect(i,SELECT_BY_POS,MODE_HISTORY)==false)
{
Print("Access to history failed with error (",GetLastError(),")");
break;
}
// some work with order
}
bool OrderClose( int ticket, double lots, double price, int slippage, color Color=CLR_NONE)
對訂單進行平倉操作。
:: 輸入參數
ticket - 訂單編號
lots - 手數
price - 平倉價格
slippage - 最高劃點數
Color - 標記顏色
示例:
if(iRSI(NULL,0,14,PRICE_CLOSE,0)>75)
{
OrderClose(order_id,1,Ask,3,Red);
return(0);
}
bool OrderCloseBy( int ticket, int opposite, color Color=CLR_NONE)
對訂單進行平倉操作。
:: 輸入參數
ticket - 訂單編號
opposite - 相對訂單編號
Color - 標記顏色
示例:
if(iRSI(NULL,0,14,PRICE_CLOSE,0)>75)
{
OrderCloseBy(order_id,opposite_id);
return(0);
}
double OrderClosePrice( )
返回訂單的平倉價
示例:
if(OrderSelect(ticket,SELECT_BY_POS)==true)
Print("Close price for the order ",ticket," = ",OrderClosePrice());
else
Print("OrderSelect failed error code is",GetLastError());
datetime OrderCloseTime( )
返回訂單的平倉時間
示例:
if(OrderSelect(10,SELECT_BY_POS,MODE_HISTORY)==true)
{
datetime ctm=OrderOpenTime();
if(ctm>0) Print("Open time for the order 10 ", ctm);
ctm=OrderCloseTime();
if(ctm>0) Print("Close time for the order 10 ", ctm);
}
else
Print("OrderSelect failed error code is",GetLastError());
string OrderComment( )
返回訂單的注釋
示例:
string comment;
if(OrderSelect(10,SELECT_BY_TICKET)==false)
{
Print("OrderSelect failed error code is",GetLastError());
return(0);
}
comment = OrderComment();
// ...
double OrderCommission( )
返回訂單的傭金數
示例:
if(OrderSelect(10,SELECT_BY_POS)==true)
Print("Commission for the order 10 ",OrderCommission());
else
Print("OrderSelect failed error code is",GetLastError());
bool OrderDelete( int ticket)
刪除未啟用的訂單
:: 輸入參數
ticket - 訂單編號
示例:
if(Ask>var1)
{
OrderDelete(order_ticket);
return(0);
}
datetime OrderExpiration( )
返回代辦訂單的有效日期
示例:
if(OrderSelect(10, SELECT_BY_TICKET)==true)
Print("Order expiration for the order #10 is ",OrderExpiration());
else
Print("OrderSelect failed error code is",GetLastError());
double OrderLots( )
返回選定訂單的手數
示例:
if(OrderSelect(10,SELECT_BY_POS)==true)
Print("lots for the order 10 ",OrderLots());
else
Print("OrderSelect failed error code is",GetLastError());
int OrderMagicNumber( )
返回選定訂單的指定編號
示例:
if(OrderSelect(10,SELECT_BY_POS)==true)
Print("Magic number for the order 10 ", OrderMagicNumber());
else
Print("OrderSelect failed error code is",GetLastError());
bool OrderModify( int ticket, double price, double stoploss, double takeprofit, datetime expiration, color arrow_color=CLR_NONE)
對訂單進行平倉操作。
:: 輸入參數
ticket - 訂單編號
price - 平倉價格
stoploss - 止損價
takeprofit - 獲利價
expiration - 有效期
Color - 標記顏色
示例:
if(TrailingStop>0)
{
SelectOrder(12345,SELECT_BY_TICKET);
if(Bid-OrderOpenPrice()>
oint*TrailingStop)
{
if(OrderStopLoss()<BID-POINT*TRAILINGSTOP)
{
OrderModify(OrderTicket(),Ask-10*Point,Ask-35*Point,OrderTakeProfit(),0,Blue);
return(0);
}
}
}
double OrderOpenPrice( )
返回選定訂單的買入價
示例:
if(OrderSelect(10, SELECT_BY_POS)==true)
Print("open price for the order 10 ",OrderOpenPrice());
else
Print("OrderSelect failed error code is",GetLastError());
datetime OrderOpenTime( )
返回選定訂單的買入時間
示例:
if(OrderSelect(10, SELECT_BY_POS)==true)
Print("open time for the order 10 ",OrderOpenTime());
else
Print("OrderSelect failed error code is",GetLastError());
void OrderPrint( )
將訂單打印到窗口上
示例:
if(OrderSelect(10, SELECT_BY_TICKET)==true)
OrderPrint();
else
Print("OrderSelect failed error code is",GetLastError());
bool OrderSelect( int index, int select, int pool=MODE_TRADES)
選定訂單
:: 輸入參數
index - 訂單索引
select - 選定模式,SELECT_BY_POS,SELECT_BY_TICKET
pool - Optional order pool index. Used when select parameter is SELECT_BY_POS.It can be any of the following values:
MODE_TRADES (default)- order selected from trading pool(opened and pending orders),
MODE_HISTORY - order selected from history pool (closed and canceled order).
示例:
if(OrderSelect(12470, SELECT_BY_TICKET)==true)
{
Print("order #12470 open price is ", OrderOpenPrice());
Print("order #12470 close price is ", OrderClosePrice());
}
else
Print("OrderSelect failed error code is",GetLastError());
int OrderSend( string symbol, int cmd, double volume, double price, int slippage, double stoploss, double takeprofit, string comment=NULL, int magic=0, datetime expiration=0, color arrow_color=CLR_NONE)
發送訂單
:: 輸入參數
symbol - 通貨標示
cmd - 購買方式
volume - 購買手數
price - 平倉價格
slippage - 最大允許滑點數
stoploss - 止損價
takeprofit - 獲利價
comment - 注釋
magic - 自定義編號
expiration - 過期時間(只適用於待處理訂單)
arrow_color - 箭頭顏色
示例:
int ticket;
if(iRSI(NULL,0,14,PRICE_CLOSE,0)<25)
{
ticket=OrderSend(Symbol(),OP_BUY,1,Ask,3,Ask-25*Point,Ask+25*Point,"My order #2",16384,0,Green);
if(ticket<0)
{
Print("OrderSend failed with error #",GetLastError());
return(0);
}
}
double OrderStopLoss( )
返回選定訂單的止損
示例:
if(OrderSelect(ticket,SELECT_BY_POS)==true)
Print("Stop loss value for the order 10 ", OrderStopLoss());
else
Print("OrderSelect failed error code is",GetLastError());
int OrdersTotal( )
返回總訂單數
示例:
int handle=FileOpen("OrdersReport.csv",FILE_WRITE|FILE_CSV,"t");
if(handle<0) return(0);
// write header
FileWrite(handle,"#","open price","open time","symbol","lots");
int total=OrdersTotal();
// write open orders
for(int pos=0;pos<TOTAL
OS++)
{
if(OrderSelect(pos,SELECT_BY_POS)==false) continue;
FileWrite(handle,OrderTicket(),OrderOpenPrice(),OrderOpenTime(),OrderSymbol(),OrderLots());
}
FileClose(handle);
int OrdersTotal( )
返回總訂單數
示例:
if(OrderSelect(order_id, SELECT_BY_TICKET)==true)
Print("Swap for the order #", order_id, " ",OrderSwap());
else
Print("OrderSelect failed error code is",GetLastError());
double OrderSwap( )
返回指定訂單的匯率
示例:
if(OrderSelect(order_id, SELECT_BY_TICKET)==true)
Print("Swap for the order #", order_id, " ",OrderSwap());
else
Print("OrderSelect failed error code is",GetLastError());
string OrderSymbol( )
返回指定訂單的通貨標識
示例:
if(OrderSelect(12, SELECT_BY_POS)==true)
Print("symbol of order #", OrderTicket(), " is ", OrderSymbol());
else
Print("OrderSelect failed error code is",GetLastError());
double OrderTakeProfit( )
返回指定訂單的獲利點數
示例:
if(OrderSelect(12, SELECT_BY_POS)==true)
Print("Order #",OrderTicket()," profit: ", OrderTakeProfit());
else
Print("OrderSelect() âåðíóë îøèáêó - ",GetLastError());
int OrderTicket( )
返回指定訂單的編號
示例:
if(OrderSelect(12, SELECT_BY_POS)==true)
order=OrderTicket();
else
Print("OrderSelect failed error code is",GetLastError());
int OrderType( )
返回指定訂單的類型
示例:
int order_type;
if(OrderSelect(12, SELECT_BY_POS)==true)
{
order_type=OrderType();
// ...
}
else
Print("OrderSelect() âåðíóë îøèáêó - ",GetLastError());
窗口函數 [Window Functions]
double PriceOnDropped( )
Returns price part of dropped point where expert or script was dropped. This value is valid when expert or script dropped by mouse.
Note: For custom indicators this value is undefined.
示例:
double drop_price=PriceOnDropped();
datetime drop_time=TimeOnDropped();
//---- may be undefined (zero)
if(drop_time>0)
{
ObjectCreate("Dropped price line", OBJ_HLINE, 0, drop_price);
ObjectCreate("Dropped time line", OBJ_VLINE, 0, drop_time);
}
datetime TimeOnDropped( )
Returns time part of dropped point where expert or script was dropped. This value is valid when expert or script dropped by mouse.
Note: For custom indicators this value is undefined.
示例:
double drop_price=PriceOnDropped();
datetime drop_time=TimeOnDropped();
//---- may be undefined (zero)
if(drop_time>0)
{
ObjectCreate("Dropped price line", OBJ_HLINE, 0, drop_price);
ObjectCreate("Dropped time line", OBJ_VLINE, 0, drop_time);
}
int WindowFind( string name)
返回窗口的索引號
:: 輸入參數
name - 指標簡稱
示例:
int win_idx=WindowFind("MACD(12,26,9)");
int WindowHandle( string symbol, int timeframe)
返回窗口的句柄
:: 輸入參數
symbol - 通貨標識
timeframe - 時間線
示例:
int win_handle=WindowHandle("USDX",PERIOD_H1);
if(win_handle!=0)
Print("Window with USDX,H1 detected. Rates array will be copied immediately.");
bool WindowIsVisible( int index)
返回窗口是否可見
:: 輸入參數
index - 窗口索引號
示例:
int maywin=WindowFind("MyMACD");
if(maywin>-1 && WindowIsVisible(maywin)==true)
Print("window of MyMACD is visible");
else
Print("window of MyMACD not found or is not visible");
int WindowOnDropped( )
Returns window index where expert, custom indicator or script was dropped. This value is valid when expert, custom indicator or script dropped by mouse.
示例:
if(WindowOnDropped()!=0)
{
Print("Indicator 'MyIndicator' must be applied to main chart window!");
return(false);
}
int WindowsTotal( )
返回窗口數
示例:
Print("Windows count = ", WindowsTotal());
int WindowXOnDropped( )
Returns x-axis coordinate in pixels were expert or script dropped to the chart. See also WindowYOnDropped(), WindowOnDropped()
示例:
Print("Expert dropped point x=",WindowXOnDropped()," y=",WindowYOnDropped());/div>
int WindowYOnDropped( )
Returns y-axis coordinate in pixels were expert or script dropped to the chart. See also WindowYOnDropped(), WindowOnDropped()
示例:
Print("Expert dropped point x=",WindowXOnDropped()," y=",WindowYOnDropped());
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