MetaTrader编程入门

MetaTrader编程入门教程(0)

----指标文件构成

例1

//+--------------------------------------------------

//双些线后是单行注释，用于注解，自用说明。/*和*/包起来实现多行注释，记录自己的说明介绍，编程使用记录等

//MQL4语言基本服从C语言的规则-----------注意目前MetaEditor处理不好多字节代码，所以不要在代码中使用中文和中文空格-------------+

//每个指标文件只是至少包括三个部分(1)property　和参数，数组声明，(2)初始化函数nit(),　(3)主函数start()

//property　是各种说明信息

//最重要必须的是这三种，(1)说明指标将画在价格窗口还是独立的窗口

//(2)有多少个(1~7)储存指标数据的数组，(3)说明对应将画指标的绘画颜色,编号1~7

#property indicator_chart_window

#property indicator_buffers 1

#property indicator_color1 Red

//---- 可设置的参数，可根据需要，由使用者设置

extern int MA_Period=13;

extern int MA_Shift=0;

extern int MA_Method=2;

extern int MA_Price = 6;

/* MA_Method =

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.

*/

/* MA_Price =

PRICE_CLOSE 0 Close price.

PRICE_OPEN 1 Open price.

PRICE_HIGH 2 High price.

PRICE_LOW 3 Low price.

PRICE_MEDIAN 4 Median price, (high+low)/2.

PRICE_TYPICAL 5 Typical price, (high+low+close)/3.

PRICE_WEIGHTED 6 Weighted close price, (high+low+close+close)/4.

*/

//数组，储存指标数据

double Buffer0[];

//| 初始化准备函数,装入时调用一次

int init()

{

//-设置编号为０的线的线形等参数, 0~6,对应indicator_color1~7

SetIndexStyle(0,DRAW_LINE);

//---- 设置编号为０的线　与数组的对应关系, 0~6

SetIndexBuffer(0,Buffer0);

return(0);

}

int start() //指标计算主函数，每次计算调用

{

ma();

return(0);

}

//自定义函数，这里只是直接使用库函数实现MA, 若你自己计算，可设计任何指标

void ma()

{

int pos=Bars;

//Bars = Number of bars in the current chart.当前窗口中的蜡烛数

while(pos>=0)

{

Buffer0[pos]=iMA(NULL,0,MA_Period,MA_Shift,MA_Method,MA_Price,pos);

pos--;

}

}

//+--------------------------------------------------

例2

//+--------------------------------------------------

#property indicator_separate_window

#property indicator_buffers 7

#property indicator_color1 Red

#property indicator_color2 Yellow

#property indicator_color3 Blue

#property indicator_color4 Green

#property indicator_color5 Gray

#property indicator_color6 SkyBlue

#property indicator_color7 Tan

extern int MA_Period=13;

extern int MA_Shift=0;

extern int MA_Method=2;

extern int MA_Price = 6;

double Buffer0[];

double Buffer1[];

double Buffer2[];

double Buffer3[];

double Buffer4[];

double Buffer5[];

double Buffer6[];

//----

int init()

{

//-设置编号为０的线的线形等参数, 0~6,对应indicator_color1~7

SetIndexStyle(0,DRAW_LINE);

SetIndexStyle(1,DRAW_LINE);

SetIndexStyle(3,DRAW_LINE);

SetIndexStyle(4,DRAW_LINE);

SetIndexStyle(5,DRAW_LINE);

SetIndexStyle(6,DRAW_LINE);

//---- 设置编号为０的线　与数组的对应关系, 0~6

SetIndexBuffer(0,Buffer0);

SetIndexBuffer(1,Buffer1);

SetIndexBuffer(2,Buffer2);

SetIndexBuffer(3,Buffer3);

SetIndexBuffer(4,Buffer4);

SetIndexBuffer(5,Buffer5);

SetIndexBuffer(6,Buffer6);

return(0);

}

//

int start() //指标计算主函数，每次计算调用

{

ma();

ma1();

return(0);

}

void ma()

{

int pos=Bars;

while(pos>=0)

{

Buffer0[pos]=iMA(NULL,0,MA_Period,MA_Shift,MA_Method,MA_Price,pos);

Buffer1[pos]=iMA(NULL,0,MA_Period*2,MA_Shift,MA_Method,MA_Price,pos);

Buffer2[pos]=iMA(NULL,0,MA_Period*3,MA_Shift,MA_Method,MA_Price,pos);

pos--;

}

}

void ma1()

{

int pos=Bars;

while(pos>=0)

{

Buffer3[pos]=iMA(NULL,0,MA_Period*4,MA_Shift,MA_Method,MA_Price,pos);

Buffer4[pos]=iMA(NULL,0,MA_Period*5,MA_Shift,MA_Method,MA_Price,pos);

Buffer5[pos]=iMA(NULL,0,MA_Period*6,MA_Shift,MA_Method,MA_Price,pos);

Buffer6[pos]=iMA(NULL,0,MA_Period*7,MA_Shift,MA_Method,MA_Price,pos);

pos--;

}

}

MetaTrader编程入门(1)－－智能交易系统基础

//+------------------------------------------------------------------+

//| Designed by OKwh, China |

//| Copyright 2006, OKwh |

//| |

//+------------------------------------------------------------------+

#property copyright "Copyright 2006, OKwh "

#property link ""

#define MAGICMA 200610011231

//+------------------------------------------------------------------+

//| expert initialization function |

//+------------------------------------------------------------------+

extern int whichmethod = 1; //1~4 种下单方式

extern double TakeProfit = 100;

extern double StopLoss = 20;

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