Alexey Gapon Alexey Gapon - 27 days ago 13
C# Question

Can't run a simple Expert Advisor with [ nquotes ] using Visual Studio 2015, MetaTrader Terminal 4

Can't run simple expert advisor.

Wnd.dll
- file from "
bin
" folder, created with VS2015.

Wnd.dll
file is inside a correct "
MQL4\Libraries\
" folder.
So I tried to run this Advisor on a Live mode but nothing happened. Please help what I am doing wrong.

#property copyright "(c) 2012-2015 Brainroom Ltd."
#property link "http://www.nquotes.net"

#import "nquotes/nquoteslib.ex4"
int nquotes_setup( string className, string assemblyName );
int nquotes_init();
int nquotes_start();
int nquotes_deinit();
double nquotes_on_tester();
int nquotes_on_timer();
int nquotes_on_chart_event( int id, long lparam, double dparam, string sparam );

int nquotes_set_property_bool( string name, bool value );
int nquotes_set_property_int( string name, int value );
int nquotes_set_property_double( string name, double value );
int nquotes_set_property_datetime( string name, datetime value );
int nquotes_set_property_color( string name, color value );
int nquotes_set_property_string( string name, string value );
int nquotes_set_property_adouble( string name, double &value[], int count = WHOLE_ARRAY, int start = 0 );

bool nquotes_get_property_bool( string name );
int nquotes_get_property_int( string name );
double nquotes_get_property_double( string name );
datetime nquotes_get_property_datetime( string name );
color nquotes_get_property_color( string name );
string nquotes_get_property_string( string name );
int nquotes_get_property_array_size( string name );
int nquotes_get_property_adouble( string name, double &value[] );
#import

int init()
{
nquotes_setup( "Wnd.Wnd", "Wnd" ); // !!!!changed only this line (NULL, NULL) ->("Wnd.Wnd", "Wnd")
return ( nquotes_init() );
}

int start()
{
return ( nquotes_start() );
}

int deinit()
{
return ( nquotes_deinit() );
}

double OnTester()
{
return ( nquotes_on_tester() );
}

void OnTimer()
{
nquotes_on_timer();
}

void OnChartEvent( const int id, const long& lparam, const double& dparam, const string& sparam )
{
nquotes_on_chart_event( id, lparam, dparam, sparam );
}


and C# code looks like this:

using NQuotes;
namespace Wnd
{
public class Wnd : MqlApi
{

public bool formCreated = false;
public override int start()
{
if (formCreated == false)
{
Form form = new Form();
form.Show();
formCreated = true;

Alert("Hello!");
}
return 0;
}
}
}


[ UPDATE ]



Expert Wnd EURUSD,M15: removed EURUSD,M15: 50 tick events (3503 bars, 89656 bar states) processed (total time 0:00:05.390)
Wnd EURUSD,M15: EA.deinit() nquotes_deinit()-> [0]
Wnd OnTester returns 0.00000000000000
Wnd EURUSD,M15: EA.OnTester() nquotes_on_tester()-> [ 0.0000000000]
Tester: stop button pressed
Wnd EURUSD,M15: EA.start() nquotes_start()-> [0]
Wnd EURUSD,M15: Alert: Hello!
Wnd EURUSD,M15: EA.init() nquotes_init()-> [0]
Wnd EURUSD,M15: EA.init() nquotes_setup()-> [0]
Wnd test started

Answer

Welcome to the Wild Worlds of MQL4!

Q: What am I doing wrong?
A: Zero debugging effort was shown so far.


If in troubles, first check and publish the version of the libraries/components, all responses from the support personnel received from the commercial vendor of the .EX4 and squeeze to the limits the published API interface-protocols in your own debugging efforts, to isolate the place "Gdě Sabáka Zarýta":

/*
- MISSING .MQ4 VERSION NUMBER ( Build 982+ New-MQL4 )
- MISSING .EX4 VERSION NUMBER ( "nquotes/nquoteslib.ex4" )
- MISSING .DLL VERSION NUMBER
+ ALWAYS PUBLISH ALL THE COMPILER-MODE DIRECTIVES
  #property strict                                               // ?!
  AND ALL OTHER IMPORTANT DEFINITIONS OF THE .MQ4-FILE
====================================================================================
THESE ARE MORE IMPORTANT FOR DEBUGGING, THAN THE COMMERCIAL/COPY-{LEFT|RIGHT} REMARX
*/
int init(){
    int          aRetCODE = nquotes_setup( "Wnd.Wnd", "Wnd" );  // !!!!changed only this line (NULL, NULL) ->("Wnd.Wnd", "Wnd")
    PrintFormat( "EA.init() nquotes_setup()-> [%d]",
                 aRetCODE
                 );
                 aRetCODE = nquotes_init();
    PrintFormat( "EA.init() nquotes_init()-> [%d]",
                 aRetCODE
                 );
    return (     aRetCODE );                                   // return( nquotes_init() )
}

int start(){
    int          aRetCODE =  nquotes_start();
    PrintFormat( "EA.start() nquotes_start()-> [%d]",
                 aRetCODE
                 );
    return (     aRetCODE );                                   // return ( nquotes_start() );
}

int deinit(){
    int          aRetCODE =   nquotes_deinit();
    PrintFormat( "EA.deinit() nquotes_deinit()-> [%d]",
                 aRetCODE
                 );
    return (     aRetCODE );                                   // return ( nquotes_deinit() );
}

double OnTester(){
    int          aRetCODE =     nquotes_on_tester();
    PrintFormat( "EA.OnTester() nquotes_on_tester()-> [%23.10f]",
                 aRetCODE
                 );
    return (     aRetCODE );                                   // return ( nquotes_on_tester() );
}

void OnTimer(){
    int          aRetCODE =    nquotes_on_timer();
    PrintFormat( "EA.OnTimer() nquotes_on_timer()-> [%d]",
                 aRetCODE
                 );
//  nquotes_on_timer();
}

void OnChartEvent(          int     id,
                            long   &lparam,
                            double &dparam,
                            string &sparam
                            ){
    int          aRetCODE =         nquotes_on_chart_event();
    PrintFormat( "EA.OnChartEvent() nquotes_on_chart_event()-> [%d]",
                 aRetCODE
                 );
//  nquotes_on_chart_event( id, lparam, dparam, sparam );
}

Relying on the published API/#import from .EX4 file:

#import     "nquotes/nquoteslib.ex4"
    int      nquotes_setup(                   string className, string assemblyName );
    int      nquotes_init();
    int      nquotes_start();
    int      nquotes_deinit();
    double   nquotes_on_tester();
    int      nquotes_on_timer();
    int      nquotes_on_chart_event(          int id, long lparam, double dparam, string sparam );

    int      nquotes_set_property_bool(       string name, bool     value );
    int      nquotes_set_property_int(        string name, int      value );
    int      nquotes_set_property_double(     string name, double   value );
    int      nquotes_set_property_datetime(   string name, datetime value );
    int      nquotes_set_property_color(      string name, color    value );
    int      nquotes_set_property_string(     string name, string   value );
    int      nquotes_set_property_adouble(    string name, double  &value[], int count = WHOLE_ARRAY, int start = 0 );

    bool     nquotes_get_property_bool(       string name );
    int      nquotes_get_property_int(        string name );
    double   nquotes_get_property_double(     string name );
    datetime nquotes_get_property_datetime(   string name );
    color    nquotes_get_property_color(      string name );
    string   nquotes_get_property_string(     string name );
    int      nquotes_get_property_array_size( string name );
    int      nquotes_get_property_adouble(    string name, double &value[] );
#import
Comments