【MT4のプログラミングをやってみた】Timer関数を使ってみる

まえがき

こんにちは、こんばんは、脱初心者トレーダーさつま芋です。

ちょっと調べたり考えたりすれば分かるような盲点情報などをシェアしたいと思います。

HTのMQL習得 Step7 Timer関数について

今回は次の動画をタイプしてみました。

www.youtube.com

コード

//+------------------------------------------------------------------+
//| TimerTest.mq4 |
//| Copyright 2020, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2020, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
#property version "1.00"
#property strict
#property indicator_chart_window
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
//--- indicator buffers mapping
EventSetMillisecondTimer(100);
//---
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
EventKillTimer();

ObjectDelete("Clock");
Comment("");
}
//+------------------------------------------------------------------+
//| 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)
{
//---

//--- return value of prev_calculated for next call
return(rates_total);
}
//+------------------------------------------------------------------+
//| Timer function |
//+------------------------------------------------------------------+
void OnTimer()
{
//---
Comment(TimeLocal(),"\n",TimeCurrent(),"\n",int(TimeLocal()-TimeCurrent())/3600);

int countDown = PeriodSeconds() - (int)TimeLocal() % PeriodSeconds();
if(countDown == PeriodSeconds())countDown=0;
LabelCreate(0,"Clock",0,100,100,CORNER_LEFT_UPPER,(string)countDown,"Arial Bold",30,clrWhite);
}
//+------------------------------------------------------------------+
//| Create a text label |
//+------------------------------------------------------------------+
bool LabelCreate(const long chart_ID=0, // chart's ID
const string name="Label", // label name
const int sub_window=0, // subwindow index
const int x=0, // X coordinate
const int y=0, // Y coordinate
const ENUM_BASE_CORNER corner=CORNER_LEFT_UPPER, // chart corner for anchoring
const string text="Label", // text
const string font="Arial", // font
const int font_size=10, // font size
const color clr=clrRed, // color
const double angle=0.0, // text slope
const ENUM_ANCHOR_POINT anchor=ANCHOR_LEFT_UPPER, // anchor type
const bool back=false, // in the background
const bool selection=false, // highlight to move
const bool hidden=true, // hidden in the object list
const long z_order=0) // priority for mouse click
{
//--- reset the error value
ResetLastError();
//--- create a text label
if(!ObjectCreate(chart_ID,name,OBJ_LABEL,sub_window,0,0)) {
ObjectSetString(chart_ID,name,OBJPROP_TEXT,text);
Print(__FUNCTION__,
": failed to create text label! Error code = ",GetLastError());
return(false);
}
//--- set label coordinates
ObjectSetInteger(chart_ID,name,OBJPROP_XDISTANCE,x);
ObjectSetInteger(chart_ID,name,OBJPROP_YDISTANCE,y);
//--- set the chart's corner, relative to which point coordinates are defined
ObjectSetInteger(chart_ID,name,OBJPROP_CORNER,corner);
//--- set the text
ObjectSetString(chart_ID,name,OBJPROP_TEXT,text);
//--- set text font
ObjectSetString(chart_ID,name,OBJPROP_FONT,font);
//--- set font size
ObjectSetInteger(chart_ID,name,OBJPROP_FONTSIZE,font_size);
//--- set the slope angle of the text
ObjectSetDouble(chart_ID,name,OBJPROP_ANGLE,angle);
//--- set anchor type
ObjectSetInteger(chart_ID,name,OBJPROP_ANCHOR,anchor);
//--- set color
ObjectSetInteger(chart_ID,name,OBJPROP_COLOR,clr);
//--- display in the foreground (false) or background (true)
ObjectSetInteger(chart_ID,name,OBJPROP_BACK,back);
//--- enable (true) or disable (false) the mode of moving the label by mouse
ObjectSetInteger(chart_ID,name,OBJPROP_SELECTABLE,selection);
ObjectSetInteger(chart_ID,name,OBJPROP_SELECTED,selection);
//--- hide (true) or display (false) graphical object name in the object list
ObjectSetInteger(chart_ID,name,OBJPROP_HIDDEN,hidden);
//--- set the priority for receiving the event of a mouse click in the chart
ObjectSetInteger(chart_ID,name,OBJPROP_ZORDER,z_order);
//--- successful execution
return(true);
}
//+------------------------------------------------------------------+