//+------------------------------------------------------------------+
//|                                                Button_Update.mq4 |
//|                                             Copyright 2017, MicX |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2017, MicX"
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict

// Global variable
bool Button_Trade = false;

//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---
   if(!ButtonCreate(0, "Button_Mode", 0, 45, 25, 40, 15, CORNER_RIGHT_UPPER, "TRADE", "Arial", 7, clrBlack, clrLightGreen, clrNONE)) {
      return(INIT_FAILED);
   }
   if(Button_Trade) {
      ObjectSetText("Button_Mode", "TRADE", 9, "Arial", clrBlack);
      ObjectSetInteger(0,"Button_Mode",OBJPROP_BGCOLOR, clrLightGreen);
   }
   else {
      ObjectSetText("Button_Mode", "Off", 9, "Arial", clrBlack);
      ObjectSetInteger(0,"Button_Mode",OBJPROP_BGCOLOR, clrLightGray);
   }
   ObjectSetInteger(0, "Button_Mode", OBJPROP_STATE, false);
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   ButtonDelete(0, "Button_Mode");
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   bool tradeEnabled = true;

   // ...
   // Insert after: if(TradeAllowed == false) tradeEnabled = false;
   if(Button_Trade == false) tradeEnabled = false;

   
  }
//+------------------------------------------------------------------+
//| ChartEvent function                                              |
//+------------------------------------------------------------------+
void OnChartEvent(const int id,
                  const long &lparam,
                  const double &dparam,
                  const string &sparam)
  {
//---
   if(id == CHARTEVENT_OBJECT_CLICK) {
      if(sparam == "Button_Mode") {
         if(Button_Trade == false) {
            ObjectSetText("Button_Mode", "TRADE", 9, "Arial", clrBlack);
            ObjectSetInteger(0,"Button_Mode",OBJPROP_BGCOLOR, clrLightGreen);
            Button_Trade = true;
         }
         else {
            ObjectSetText("Button_Mode", "Off", 9, "Arial", clrBlack);
            ObjectSetInteger(0,"Button_Mode",OBJPROP_BGCOLOR, clrLightGray);
            Button_Trade = false;
         }
         Sleep(100);
         ObjectSetInteger(0,"Button_Mode",OBJPROP_STATE, false);
      }
   }
   
  }
//+------------------------------------------------------------------+

//+------------------------------------------------------------------+
//| Create the button                                                |
//+------------------------------------------------------------------+
bool ButtonCreate(const long              chart_ID=0,               // chart's ID
                  const string            name="Button",            // button name
                  const int               sub_window=0,             // subwindow index
                  const int               x=0,                      // X coordinate
                  const int               y=0,                      // Y coordinate
                  const int               width=50,                 // button width
                  const int               height=18,                // button height
                  const ENUM_BASE_CORNER  corner=CORNER_LEFT_UPPER, // chart corner for anchoring
                  const string            text="Button",            // text
                  const string            font="Arial",             // font
                  const int               font_size=10,             // font size
                  const color             clr=clrBlack,             // text color
                  const color             back_clr=C'236,233,216',  // background color
                  const color             border_clr=clrNONE,       // border color
                  const bool              state=false,              // pressed/released
                  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 the button
   if(!ObjectCreate(chart_ID,name,OBJ_BUTTON,sub_window,0,0))
     {
      Print(__FUNCTION__,
            ": failed to create the button! Error code = ",GetLastError());
      return(false);
     }
//--- set button coordinates
   ObjectSetInteger(chart_ID,name,OBJPROP_XDISTANCE,x);
   ObjectSetInteger(chart_ID,name,OBJPROP_YDISTANCE,y);
//--- set button size
   ObjectSetInteger(chart_ID,name,OBJPROP_XSIZE,width);
   ObjectSetInteger(chart_ID,name,OBJPROP_YSIZE,height);
//--- 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 text color
   ObjectSetInteger(chart_ID,name,OBJPROP_COLOR,clr);
//--- set background color
   ObjectSetInteger(chart_ID,name,OBJPROP_BGCOLOR,back_clr);
//--- set border color
   ObjectSetInteger(chart_ID,name,OBJPROP_BORDER_COLOR,border_clr);
//--- display in the foreground (false) or background (true)
   ObjectSetInteger(chart_ID,name,OBJPROP_BACK,back);
//--- set button state
   ObjectSetInteger(chart_ID,name,OBJPROP_STATE,state);
//--- enable (true) or disable (false) the mode of moving the button 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);
  }

//+------------------------------------------------------------------+
//| Delete the button                                                |
//+------------------------------------------------------------------+
bool ButtonDelete(const long   chart_ID=0,    // chart's ID
                  const string name="Button") // button name
  {
//--- reset the error value
   ResetLastError();
//--- delete the button
   if(!ObjectDelete(chart_ID,name))
     {
      Print(__FUNCTION__,
            ": failed to delete the button! Error code = ",GetLastError());
      return(false);
     }
//--- successful execution
   return(true);
  }