Язык программирования MQL5: Продвинутое использование торговой платформы MetaTrader 5. Тимур Машнин
Читать онлайн книгу.Язык программирования MQL5: Продвинутое использование торговой платформы MetaTrader 5 - Тимур Машнин
Impulse keeper при появлении первого сигнала на покупку или продажу.
Скачаем какой-нибудь WAV-сигнал из Интернета и поместим его файл в папку Sounds терминала.
Добавим код в индикатор Impulse keeper:
#property indicator_chart_window
#property indicator_buffers 4
double EMA34HBuffer [];
double EMA34LBuffer [];
double EMA125Buffer [];
double PSARBuffer [];
int EMA34HHandle;
int EMA34LHandle;
int EMA125Handle;
int PSARHandle;
int bars_calculated=0;
int countBuy=0
int countSell=0;
//+ – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – +
//| Custom indicator initialization function |
//+ – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – +
int OnInit ()
{
// – - indicator buffers mapping
SetIndexBuffer (0,EMA34HBuffer, INDICATOR_CALCULATIONS);
SetIndexBuffer (1,EMA34LBuffer, INDICATOR_CALCULATIONS);
SetIndexBuffer (2,EMA125Buffer, INDICATOR_CALCULATIONS);
SetIndexBuffer (3,PSARBuffer, INDICATOR_CALCULATIONS);
EMA34HHandle=iMA (NULL,0,34,0,MODE_EMA, PRICE_HIGH);
EMA34LHandle=iMA (NULL,0,34,0,MODE_EMA, PRICE_LOW);
EMA125Handle=iMA (NULL,0,125,0,MODE_EMA, PRICE_CLOSE);
PSARHandle=iSAR (NULL,0,0.02, 0.2);
// – —
return (INIT_SUCCEEDED);
}
//+ – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – +
//| Custom indicator iteration function |
//+ – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – — – +
int OnCalculate (const int rates_total,
const int prev_calculated,
const datetime &time [],
const double &open [],
const double &high [],
const double &low [],
const double &close [],
const long &tick_volume [],
const long &volume [],
const int &spread [])
{
// – —
int values_to_copy;
int start;
int calculated=BarsCalculated (EMA34HHandle);
if (calculated <=0)
{
return (0);
}
if (prev_calculated==0 || calculated!=bars_calculated)
{
start=1;
if (calculated> rates_total) values_to_copy=rates_total;
else values_to_copy=calculated;
}
else
{
start=rates_total-1;
values_to_copy=1;
}
if (!FillArrayFromMABuffer (EMA34HBuffer,0,EMA34HHandle, values_to_copy)) return (0); if (!FillArrayFromMABuffer (EMA34LBuffer,0,EMA34LHandle, values_to_copy)) return (0); if (!FillArrayFromMABuffer (EMA125Buffer,0,EMA125Handle, values_to_copy)) return (0);
if (!FillArrayFromPSARBuffer (PSARBuffer, PSARHandle, values_to_copy)) return (0);
for (int i=start; i <rates_total &&!IsStopped ();i++)
{
if (close [i-1]> open [i-1] &&close [i-1]> EMA34HBuffer [i-1] &&close [i-1]> EMA34LBuffer [i-1] &&low [i-1]> EMA125Buffer [i-1] &&low [i-1]> PSARBuffer [i-1] &&EMA125Buffer [i-1] <EMA34LBuffer [i-1] &&EMA125Buffer [i-1] <EMA34HBuffer [i-1]) {
if (!ObjectCreate (0,«Buy»+i, OBJ_ARROW,0,time [i-1],high [i-1]))
{
return (false);
}
ObjectSetInteger (0,«Buy»+i, OBJPROP_COLOR, clrGreen);
ObjectSetInteger (0,«Buy»+i, OBJPROP_ARROWCODE,233);
ObjectSetInteger (0,«Buy»+i, OBJPROP_WIDTH,2);
ObjectSetInteger (0,«Buy»+i, OBJPROP_ANCHOR, ANCHOR_UPPER);
ObjectSetInteger (0,«Buy»+i, OBJPROP_HIDDEN, true);
ObjectSetString (0,«Buy»+i, OBJPROP_TOOLTIP, close [i-1]);
}
if (start!=1) {
if (close [i-1]> open [i-1] &&close [i-1]> EMA34HBuffer [i-1] &&close [i-1]> EMA34LBuffer [i-1] &&low [i-1]> EMA125Buffer [i-1] &&low [i-1]> PSARBuffer [i-1] &&EMA125Buffer [i-1] <EMA34LBuffer [i-1] &&EMA125Buffer [i-1] <EMA34HBuffer [i-1]) {
countBuy++;
if (countBuy==1) PlaySound («chime. wav»)
} else {
countBuy=0;
}
if (close [i-1] <open [i-1] &&close [i-1] <EMA34HBuffer [i-1] &&close [i-1] <EMA34LBuffer [i-1] &&high [i-1] <EMA125Buffer [i-1] &&high [i-1] <PSARBuffer [i-1] &&EMA125Buffer [i-1]> EMA34LBuffer [i-1] &&EMA125Buffer [i-1]> EMA34HBuffer [i-1]) {
countSell++;
if (countSell==1) PlaySound («chime. wav»);
} else {
countSell=0;
}
}
if (close [i-1] <open [i-1] &&close [i-1] <EMA34HBuffer [i-1] &&close [i-1] <EMA34LBuffer [i-1] &&high [i-1] <EMA125Buffer [i-1] &&high [i-1] <PSARBuffer [i-1] &&EMA125Buffer [i-1]> EMA34LBuffer [i-1] &&EMA125Buffer [i-1]> EMA34HBuffer [i-1]) {
if (!ObjectCreate (0,«Sell»+i, OBJ_ARROW,0,time [i-1],low [i-1]))
{
return