Qt function call in vb.net

[abghosh]

Hi

I have taken the following code from a webpage and tried to test the call.

Global header file:

#ifndef QTENGINEDLL_GLOBAL_H
#define QTENGINEDLL_GLOBAL_H
 
#include <QtCore/QtGlobal>
 
#if defined(QTENGINEDLL_LIBRARY)
#  define QTENGINEDLLSHARED_EXPORT Q_DECL_EXPORT
#else
#  define QTENGINEDLLSHARED_EXPORT Q_DECL_IMPORT
#endif
 
#endif // QTENGINEDLL_GLOBAL_H

#ifndef QTENGINEDLL_GLOBAL_H
#define QTENGINEDLL_GLOBAL_H

#include <QtCore/QtGlobal>

#if defined(QTENGINEDLL_LIBRARY)
#  define QTENGINEDLLSHARED_EXPORT Q_DECL_EXPORT
#else
#  define QTENGINEDLLSHARED_EXPORT Q_DECL_IMPORT
#endif

#endif // QTENGINEDLL_GLOBAL_H

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QtEngineDll.h

#ifndef QTENGINEDLL_H
#define QTENGINEDLL_H
 
#include "qtenginedll_global.h"
 
class QTENGINEDLLSHARED_EXPORT QtEngineDll {
public:
    QtEngineDll();
    int randInt();
 
};
 
#endif // QTENGINEDLL_H

#ifndef QTENGINEDLL_H
#define QTENGINEDLL_H

#include "qtenginedll_global.h"

class QTENGINEDLLSHARED_EXPORT QtEngineDll {
public:
    QtEngineDll();
    int randInt();

};

#endif // QTENGINEDLL_H

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QtEngineDll.cpp

#include <QTime>
#include "qtenginedll.h"
 
 
QtEngineDll::QtEngineDll()
{
    //Create random number seed
    QTime time = QTime::currentTime();
    qsrand((uint)time.msec());
}
 
int QtEngineDll::randInt()
{
    // Random number between low and high
    //return qrand() % ((aHigh + 1) - aLow) + aLow;
    return 0;
}

#include <QTime>
#include "qtenginedll.h"


QtEngineDll::QtEngineDll()
{
    //Create random number seed
    QTime time = QTime::currentTime();
    qsrand((uint)time.msec());
}

int QtEngineDll::randInt()
{
    // Random number between low and high
    //return qrand() % ((aHigh + 1) - aLow) + aLow;
    return 0;
}

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Now while calling from Vb .net I am using the following command:

<DllImport("G:\Varen_CS\02_Projects\01_Softwares\highFreqTrad\QtDLLImport\test\test\debug\test.dll", _
               CallingConvention:=CallingConvention.StdCall)> _
    Private Shared Function QtEngineDll() As Integer
    End Function

<DllImport("G:\Varen_CS\02_Projects\01_Softwares\highFreqTrad\QtDLLImport\test\test\debug\test.dll", _
               CallingConvention:=CallingConvention.StdCall)> _
    Private Shared Function QtEngineDll() As Integer
    End Function

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It is giving me the error: Unable to find an entry point named 'QtEngineDll' in DLL

Can you pls tell me what the wrong I am do'g and what is the entry point to be used from the code?
Also how should I define a different entry point in a dll?
Is it possible to define multiple entry points in a single dll?


Thanks in advance.

[abghosh]

Ok I got it.

But now I am facing a new problem. I am passing a string value as an argument. But It is reading its ascii value.