mt4软件怎么提取ea的源码

只要你的电脑有安装MT4，只需要双击“BB_MACD_v1.01.mq4”这个文件就能打开读取源码了。

//---- indicator settings
#property indicator_separate_window
#property indicator_buffers 4
#property indicator_color1 Lime //bbMacd up
#property indicator_color2 Magenta //bbMacd up
#property indicator_color3 Blue //Upperband
#property indicator_color4 Red //Lowerband
//---- indicator parameters
extern int FastLen = 12;
extern int SlowLen = 26;
extern int Length = 10;
extern int barsCount = 400;
extern double StDv = 2.5;
//----
int loopbegin;
int shift;
double zeroline;
//---- indicator buffers
double ExtMapBuffer1[]; // bbMacd
double ExtMapBuffer2[]; // bbMacd
double ExtMapBuffer3[]; // Upperband Line
double ExtMapBuffer4[]; // Lowerband Line
//---- buffers
double bbMacd[];
double Upperband[];
double Lowerband[];
double avg[];
double bbMacdline;
double sDev;
double mean;
double sumSqr;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 6 additional buffers are used for counting.
IndicatorBuffers(8);
//---- drawing settings
SetIndexBuffer(0, ExtMapBuffer1); // bbMacd line
SetIndexStyle(0, DRAW_ARROW);
SetIndexArrow(0, 108);
IndicatorDigits(Digits + 1);
//----
SetIndexBuffer(1, ExtMapBuffer2); // bbMacd line
SetIndexStyle(1, DRAW_ARROW);
SetIndexArrow(1, 108);
IndicatorDigits(Digits + 1);
//----
SetIndexBuffer(2, ExtMapBuffer3); // Upperband line
SetIndexStyle(2, DRAW_LINE, STYLE_SOLID, 1);
IndicatorDigits(Digits + 1);
//----
SetIndexBuffer(3, ExtMapBuffer4); // Lowerband line
SetIndexStyle(3, DRAW_LINE, STYLE_SOLID, 1);
IndicatorDigits(Digits + 1);
//----
SetIndexBuffer(4, bbMacd);
SetIndexBuffer(5, Upperband);
SetIndexBuffer(6, Lowerband);
SetIndexBuffer(7, avg);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("BB MACD(" + FastLen + "," + SlowLen + "," + Length+")");
SetIndexLabel(0, "bbMacd");
SetIndexLabel(1, "Upperband");
SetIndexLabel(2, "Lowerband");
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom BB_MACD |
//+------------------------------------------------------------------+
int start()
{
int limit;
int counted_bars = IndicatorCounted();
if(counted_bars < 0) return(-1);
if(counted_bars > 0) counted_bars--;
if (barsCount > 0)
limit = MathMin(Bars - counted_bars,barsCount);
else limit = Bars - counted_bars;
//----
for(int i = 0; i < limit; i++)
bbMacd[i] = iMA(NULL, 0, FastLen, 0, MODE_EMA, PRICE_CLOSE, i) -
iMA(NULL, 0, SlowLen, 0, MODE_EMA, PRICE_CLOSE, i);
//----
for(i = 0; i < limit; i++)
{
avg[i] = iMAOnArray(bbMacd, 0, Length, 0, MODE_EMA, i);
sDev = iStdDevOnArray(bbMacd, 0, Length, MODE_EMA, 0, i);
Upperband[i] = avg[i] + (StDv * sDev);
Lowerband[i] = avg[i] - (StDv * sDev);
ExtMapBuffer1[i]=bbMacd[i]; // Uptrend bbMacd
ExtMapBuffer2[i]=bbMacd[i]; // downtrend bbMacd
ExtMapBuffer3[i]=Upperband[i]; // Upperband
ExtMapBuffer4[i]=Lowerband[i]; // Lowerband
//----
if(bbMacd[i] > bbMacd[i+1])
ExtMapBuffer2[i] = EMPTY_VALUE;
//----
if(bbMacd[i] < bbMacd[i+1])
ExtMapBuffer1[i] = EMPTY_VALUE;
}
//---- done
return(0);
}
//+------------------------------------------------------------------+