ActiveX events and Qt

[rvdk]

I'm trying to use the Skype4COM library in a Qt application. Now with dumpcpp I've created the h and cpp file.
I can collect User in my friends list and make a call but I don't know how I could receive events from Skype itself.
Watching the generated header file I found this:

// skipping event interface _ISkypeEvents

and is probably not a good sign. Does anyone know how I could get the (Skype) events working? If I do it in C# it is fairly easiliy but I want it in Qt.

Further more when using my (basic) application I get a segmentation fault when exiting my app. Am I missing something do destroy the ActiveX component?

delete m_Skype;

delete m_Skype;

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doesn't get rid of the segmentation fault.

Some code:
header:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
#include <QAxObject>
#include "skype4comlib.h"
 
using namespace SKYPE4COMLib;
 
namespace Ui {
    class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
private:
    Ui::MainWindow* m_UI;
    Skype* m_Skype;
 
};
 
#endif // MAINWINDOW_H

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QAxObject>
#include "skype4comlib.h"

using namespace SKYPE4COMLib;

namespace Ui {
    class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private:
    Ui::MainWindow* m_UI;
    Skype* m_Skype;

};

#endif // MAINWINDOW_H

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the cpp:

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    m_UI(new Ui::MainWindow)
{
    m_UI->setupUi(this);
 
    m_Skype = new Skype();
    m_Skype->Attach(6, true);
    //m_Skype->SetSilentMode(true);
 
    IUserCollection* friends = m_Skype->Friends();
 
    for (int i = 1; i <= friends->Count(); i++)
    {
        IUser* user = friends->Item(i);
        qDebug() << i << ":" << user->FullName();
    }
}
 
MainWindow::~MainWindow()
{
    delete m_UI;
}

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    m_UI(new Ui::MainWindow)
{
    m_UI->setupUi(this);

    m_Skype = new Skype();
    m_Skype->Attach(6, true);
    //m_Skype->SetSilentMode(true);

    IUserCollection* friends = m_Skype->Friends();

    for (int i = 1; i <= friends->Count(); i++)
    {
        IUser* user = friends->Item(i);
        qDebug() << i << ":" << user->FullName();
    }
}

MainWindow::~MainWindow()
{
    delete m_UI;
}

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[rvdk]

Would using a QAxWidget and/or loading the dll directly instead of using dumpcpp help?

[rvdk]

I found out that qAxBase has already an event sink:

connect(m_Skype, SIGNAL(signal(QString,int,void*)), SLOT(Sink(QString,int,void*)));

connect(m_Skype, SIGNAL(signal(QString,int,void*)), SLOT(Sink(QString,int,void*)));

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Now I receive the events but the signatures differ from the Skype Documentation
By calling I get a

"CallStatus(IDispatch*,TCallStatus)"

"CallStatus(IDispatch*,TCallStatus)"

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as name. But in documentation it should be

HRESULT CallStatus([in] ICall* pCall, [in] TCallStatus Status);

HRESULT CallStatus([in] ICall* pCall, [in] TCallStatus Status);

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If I connect to the IDispatch, the connect will fail. If I connect to the ICall interface I don't get a msg in output(==succesfull) but events will not be send to that slot...

[rvdk]

I can receive the CallStatus using the sink but the parameters are incorrect. Casting the first parameter (IDispatch) is not working either.
Connecting to "CallStatus(IDispatch*,TCallStatus)" will fail because the signal could not be found.

m_Skype = new Skype();
m_Skype->Attach(5, true);
connect(m_Skype, SIGNAL(signal(QString,int,void*)), SLOT(Sink(QString,int,void*)));
connect(m_Skype, SIGNAL(ContactsFocused(QString)), SLOT(ContactsFocused(QString)));
connect(m_Skype, SIGNAL(CallStatus(ICall*,TCallStatus)), SLOT(CallStatus(ICall*,TCallStatus)));
 
void SkypeWrapper::ContactsFocused(QString name)
{
    qDebug() << "ContactsFocused:" << name; // <- Called!
}
 
void SkypeWrapper::CallStatus(ICall* pCall, TCallStatus Status)
{
    qDebug() << "CallStatus(ICall):"; // <- Never called
}
 
void SkypeWrapper::Sink(const QString& name, int argc, void * argv)
{
    qDebug() << "sink: name(" << name << ") argc(" << argc<< ")";
 
    VARIANTARG* params = (VARIANTARG*)argv;
 
    if (name.startsWith("CallStatus"))
    {
        //According to Qt the arguments are in reverse order
        IDispatch* dis = params[argc-1].pdispVal;
        ICall* call = (ICall*)dis;
	dis.Answer(); // <- Segmentation fault
    }
}

m_Skype = new Skype();
m_Skype->Attach(5, true);
connect(m_Skype, SIGNAL(signal(QString,int,void*)), SLOT(Sink(QString,int,void*)));
connect(m_Skype, SIGNAL(ContactsFocused(QString)), SLOT(ContactsFocused(QString)));
connect(m_Skype, SIGNAL(CallStatus(ICall*,TCallStatus)), SLOT(CallStatus(ICall*,TCallStatus)));
	
void SkypeWrapper::ContactsFocused(QString name)
{
    qDebug() << "ContactsFocused:" << name; // <- Called!
}

void SkypeWrapper::CallStatus(ICall* pCall, TCallStatus Status)
{
    qDebug() << "CallStatus(ICall):"; // <- Never called
}

void SkypeWrapper::Sink(const QString& name, int argc, void * argv)
{
    qDebug() << "sink: name(" << name << ") argc(" << argc<< ")";

    VARIANTARG* params = (VARIANTARG*)argv;

    if (name.startsWith("CallStatus"))
    {
        //According to Qt the arguments are in reverse order
        IDispatch* dis = params[argc-1].pdispVal;
        ICall* call = (ICall*)dis;
	dis.Answer(); // <- Segmentation fault
    }
}

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It works for ContactsFocussed:

sink: name( "Reply(IDispatch*)" ) argc( 1 )
Object::receivers: No such signal SKYPE4COMLib::skype::Reply(IDispatch*)
sink: name( "ContactsFocused(QString)" ) argc( 1 )
ContactsFocused: "echo123" // <- Works!

But not for CallStatus:

sink: name( "Reply(IDispatch*)" ) argc( 1 )
Object::receivers: No such signal SKYPE4COMLib::skype::Reply(IDispatch*)
sink: name( "CallStatus(IDispatch*,TCallStatus)" ) argc( 2 ) //<- This should be CallStatus(ICall*,TCallStatus)
Object::receivers: No such signal SKYPE4COMLib::skype::CallStatus(IDispatch*,TCallSt atus)
sink: name( "Reply(IDispatch*)" ) argc( 1 )
Object::receivers: No such signal SKYPE4COMLib::skype::Reply(IDispatch*)
sink: name( "CallStatus(IDispatch*,TCallStatus)" ) argc( 2 )
Object::receivers: No such signal SKYPE4COMLib::skype::CallStatus(IDispatch*,TCallSt atus)

If I use the dumpinfo function I get:

OBJECT SKYPE4COMLib::skype::unnamed
SIGNALS OUT
//Snip
signal: CallStatus(ICall*,TCallStatus)
--> SkypeWrapper::SkypeWrapperCallStatus(ICall*,TCallS tatus)
//Snip
signal: ContactsFocused(QString)
--> SkypeWrapper::SkypeWrapperContactsFocused(QString)
//Snip
signal: signal(QString,int,void*)
--> SkypeWrapper::SkypeWrapperSink(QString,int,void*)
SIGNALS IN
<None>

Any ideas how to get the ICall* object?

[slg1013]

I was just wondering if you were ever able to solve this problem. I'm using a different library, but am getting similar error messages...

Thanks