mql5/Experts/Examples/ChartInChart/ChartInChart.mq5

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+

//|                                                 ChartInChart.mq5 |

//|                             Copyright 2000-2025, MetaQuotes Ltd. |

//|                                             https://www.mql5.com |

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

#property copyright "Copyright 2000-2025, MetaQuotes Ltd."

#property link      "https://www.mql5.com"

//--- inputs

input color TextColor=clrWhite;

input color BGColor=clrSteelBlue;

input int   XPosition=10;

input int   YPosition=10;

input int   XSize=450;

input int   YSize=300;

//--- variables

int xsize=450;

int ysize=300;

int xdist=10;

int ydist=10;

int scale=1;

int show=1;

int showdates =0;

int showprices=0;

//---

string          curr_symbol;

string          curr_period_str;

ENUM_TIMEFRAMES curr_period;

ENUM_TIMEFRAMES enper;

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

//| Initialize expert                                                |

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

void OnInit()

  {

//--- default value for symbol and period

   curr_symbol=Symbol();

   curr_period=Period();

   PeriodToStr(curr_period,curr_period_str);

//--- copy sizes

   xsize=XSize;

   ysize=YSize;

   xdist=XPosition;

   ydist=YPosition;

//--- create objects

   PIPCreate();

   PIPSetParams();

//---

   ChartRedraw();

  }

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

//| Process chart events                                             |

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

void OnChartEvent(const int id,const long& lparam,const double& dparam,const string& sparam)

  {

   if(id==CHARTEVENT_OBJECT_ENDEDIT && sparam=="PIPSymbol")

     {

      curr_symbol=ObjectGetString(0,"PIPSymbol",OBJPROP_TEXT);

      ObjectSetString(0,"PIPChart",OBJPROP_SYMBOL,curr_symbol);

      ChartRedraw();

      //--- check symbol

      curr_symbol=ObjectGetString(0,"PIPChart",OBJPROP_SYMBOL);

      ObjectSetString(0,"PIPSymbol",OBJPROP_TEXT,curr_symbol);

     }

   else

   if(id==CHARTEVENT_OBJECT_ENDEDIT && sparam=="PIPPeriod")

     {

      string per=ObjectGetString(0,"PIPPeriod",OBJPROP_TEXT);

      if(StrToPeriod(per,enper))

        {

         if(enper) curr_period=enper;

         PeriodToStr(curr_period,curr_period_str);

         ObjectSetInteger(0,"PIPChart",OBJPROP_PERIOD,curr_period);

         ChartRedraw();

        }

     }

   else

   if(id==CHARTEVENT_OBJECT_CLICK && sparam=="PIPPricesButton")

     {

      showprices=(int)ObjectGetInteger(0,"PIPPricesButton",OBJPROP_STATE);

      ObjectSetInteger(0,"PIPChart",OBJPROP_PRICE_SCALE,showprices);

      ChartRedraw();

     }

   else   

   if(id==CHARTEVENT_OBJECT_CLICK && sparam=="PIPDatesButton")

     {

      showdates=(int)ObjectGetInteger(0,"PIPDatesButton",OBJPROP_STATE);

      ObjectSetInteger(0,"PIPChart",OBJPROP_DATE_SCALE,showdates);

      ChartRedraw();

     }

   else   

   if(id==CHARTEVENT_OBJECT_CLICK && sparam=="PIPPlusButton")

     {

      ObjectSetInteger(0,"PIPPlusButton",OBJPROP_STATE,0);

      if(scale<5)

        {

         scale++;

         ObjectSetInteger(0,"PIPChart",OBJPROP_CHART_SCALE,scale);

        }

      ChartRedraw();

     }

   else

   if(id==CHARTEVENT_OBJECT_CLICK && sparam=="PIPMinusButton")

     {

      ObjectSetInteger(0,"PIPMinusButton",OBJPROP_STATE,0);

      if(scale>0)

        {

         scale--;

         ObjectSetInteger(0,"PIPChart",OBJPROP_CHART_SCALE,scale);

        }

      ChartRedraw();

     }

   else

   if(id==CHARTEVENT_OBJECT_CLICK && sparam=="PIPHideButton")

     {

      ObjectSetInteger(0,"PIPHideButton",OBJPROP_STATE,0);

      if(show)

        {

         //--- hide chart

         ObjectSetString(0,"PIPHideButton",OBJPROP_TEXT,"\n");

         PIPHideChart();

        }

      else

        {

         //--- restore chart

         PIPSetParams();

        }

      //--- change state

      show=1-show;

      ChartRedraw();

     }

  }

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

//| Deinitialize expert                                              |

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

void OnDeinit(const int reason)

  {

//--- delete all our objects

   PIPDelete();

//---

   ChartRedraw();

  }

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

//| Create objects                                                   |

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

void PIPCreate()

  {

   ObjectCreate(0,"PIPSymbol",OBJ_EDIT,0,0,0,0,0);

   ObjectCreate(0,"PIPPeriod",OBJ_EDIT,0,0,0,0,0);

   ObjectCreate(0,"PIPPlusButton",OBJ_BUTTON,0,0,0,0,0);

   ObjectCreate(0,"PIPMinusButton",OBJ_BUTTON,0,0,0,0,0);

   ObjectCreate(0,"PIPHideButton",OBJ_BUTTON,0,0,0,0,0);

   ObjectCreate(0,"PIPDatesButton",OBJ_BUTTON,0,0,0,0,0);

   ObjectCreate(0,"PIPPricesButton",OBJ_BUTTON,0,0,0,0,0);

   ObjectCreate(0,"PIPChart",OBJ_CHART,0,0,0,0,0);

  }

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

//| Delete objects                                                   |

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

void PIPDelete()

  {

   ObjectDelete(0,"PIPSymbol");

   ObjectDelete(0,"PIPPeriod");

   ObjectDelete(0,"PIPPlusButton");

   ObjectDelete(0,"PIPMinusButton");

   ObjectDelete(0,"PIPHideButton");

   ObjectDelete(0,"PIPDatesButton");

   ObjectDelete(0,"PIPPricesButton");

   ObjectDelete(0,"PIPChart");

  }

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

//| Set objects params                                               |

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

void PIPSetParams()

  {

//--- check size

   if(xsize<250) xsize=250;

   if(ysize<100) ysize=100;

//--- Symbol