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;