How to access input box string value ?

[SteelAce]

I declared the control Inputbox :

CInputBox m_ib; (As in sample https://www.mql5.com/en/articles/322)

, Placed button event that must print in alert box that inputbox value :

if(m_but.Event(id,lparam,dparam,sparam)==1) {

           Alert("Mbut event: " + m_ib.ValueString());}

, but I cannot see in my alertbox m_ib string ("MyText") what I want (Instead of "MyText" there is "0.00").

How I can succeed the right value in Mbut event?

Thank you!

[Alain Verleyen]

You have to use following code (or similar) in OnChartEvent().

m_ib.Event(id,lparam,dparam,sparam);

[SteelAce]

There is my full code what I am trying to test:

//+------------------------------------------------------------------+
//|                                         eIncGUI_v3_Test_Form.mq5 |
//|                        Copyright 2011, MetaQuotes Software Corp. |
//|                                              http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2011, MetaQuotes Software Corp."
#property link      "http://www.mql5.com"
#property version   "1.00"

#include <IncGUI_v3.mqh>

enum eColorScheme{
   DefaultScheme=0,
   YellowBrownScheme=1,
   BlueScheme=2,
   GreenScheme=3,
   YellowBlackScheme=4,
   LimeBlackScheme=5,
   AquaBlackScheme=6
};

input eColorScheme ColorScheme=DefaultScheme;



class MyCForm: public CFormBase{
   public:
      // 1. Declaring the controls
       CInputBox m_ib;
       CButton m_but;
   protected:
      // 2. Declaring the variables to restore the control values  
      int m_EventsCounter;
         void MainProperties(){
            // Setting the form parameters
            m_Name         =  "Form";        // Form name. The names of all the controls should start with it.
            m_Width        =  260;           // Form width
            m_Height       =  200;           // Form height
            m_Type         =  1;             // Form type: 0 - without buttons, 1 - with "Apply" and "Cancel" buttons, 2 - with the "Close" button
            m_Caption      =  "FormCaption"; // Form caption
            m_Movable      =  true;          // Movable form (the button with a hand image is displayed in the top left corner)
            m_Resizable    =  true;          // Form minimizing/maximizing allowed (the button with a rectangle image is displayed in the top right corner)
            m_CloseButton  =  false;         // Form closing allowed (the button with a cross image is displayed in the top right corner)
         }
         void OnInitEvent(){
            m_ib.Init(m_Name+"_IB",40,2);
            m_but.Init(m_Name+"_But",50,15);
         }  
         void OnShowEvent(int aLeft,int aTop){
         m_ib.Show(frm.Left()+40,frm.Top()+100);
         m_but.Show(frm.Left()+140,frm.Top()+100);
          }
         void OnHideEvent(){
         m_ib.Hide();
         m_but.Hide();
          }
         void EventsHandler(const int id,const long& lparam,const double& dparam,const string& sparam){
           string val=m_ib.ValueString();
           if(m_but.Event(id,lparam,dparam,sparam)==1) {
           Alert("Mbut event: " + val);}
          }
         bool OnApplyEvent(){
            // 11. Checking the control values upon closing by the "Apply" button. In order to reject the closing of the form, false should be returned from this method.
            // 12. Saving the parameters.
             string val=m_ib.ValueString();
             Alert("Apply event: " + val);
             return(true);
         }
         bool OnCancelEvent(){
            // 13. Checks upon closing by the "Cancel" or "Close" buttons. In order to reject the closing of the form, false should be returned from this method.
            return(false);
         }
};

MyCForm frm;

//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit(){

   //ClrScheme.SetScheme(ColorScheme);
   // Main form
   frm.Init();
   frm.Show(30,30);
   return(0);
   }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason){
   frm.Hide();
   
}
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick(){
}
//+------------------------------------------------------------------+
//| ChartEvent function                                              |
//+------------------------------------------------------------------+
void OnChartEvent(const int id,
                  const long &lparam,
                  const double &dparam,
                  const string &sparam
                  ){
  int ev=frm.Event(id,lparam,dparam,sparam);
      switch(ev){
         case 1:
            Alert("Form "+frm.Name()+"("+frm.Caption()+"). Cancel event");
         break;
         case 2:
            Alert("Form "+frm.Name()+"("+frm.Caption()+"). Apply event");
         break;
         case 3:
            Alert("Form "+frm.Name()+"("+frm.Caption()+"). Resize event"); 
         break;
   m_ib.Event(id,lparam,dparam,sparam);       
      }

}

I added m_ib.Event(id,lparam,dparam,sparam); in OnChartEvent at end of the code, but it caused error 'm_ib' - undeclared identifier. Strange that frm (what i s also in OnChartEvent) is not undeclared identifier. Where is difference, what I did wrong?

[SteelAce]

I noticed that there was error in brackets. But when brackets are right, error still stays. I'm sorry.

[Alain Verleyen]

Forum on trading, automated trading systems and testing trading strategies

Hello,

Please use the SRC button when you post code. Thank you.

This time, I edited it for you.

[Alain Verleyen]

SteelAce:

There is my full code what I am trying to test:

I added m_ib.Event(id,lparam,dparam,sparam); in OnChartEvent at end of the code, but it caused error 'm_ib' - undeclared identifier. Strange that frm (what i s also in OnChartEvent) is not undeclared identifier. Where is difference, what I did wrong?

Of course when I wrote "similar", it means you have to think a little where and how to place this code

Add the line in MyCForm :

         void EventsHandler(const int id,const long& lparam,const double& dparam,const string& sparam){
           m_ib.Event(id,lparam,dparam,sparam);       
           string val=m_ib.ValueString();
           if(m_but.Event(id,lparam,dparam,sparam)==1) {
           Alert("Mbut event: " + val);}
          }

or use this in OnChartEvent :

   frm.m_ib.Event(id,lparam,dparam,sparam);

frm is an instance of MyCForm declared globally. So accessible everywhere in your EA.

m_ib is a property of this object.

So you can either place this line inside your class or in OnChartEvent.