How to use connect() with a singleton class?

[punkypogo]

Hi,

I made a Qt singleton class:


// decl
class QFoo : QObject
{
Q_OBJECT
public:
static QFoo* getInstance( QObject* parent=0 );
static void destroy();

signal:
void fooSignal();

private:
static QFoo* p_instance;

QFoo( QObject* parent );
~QFoo();
};

// impl
QFoo* QFoo::p_instance = 0;

QFoo* QFoo::getInstance( QObject* parent )
{
if( !p_instance )
p_instance = new QFoo( parent );
return p_instance;
}

void QFoo::destroy()
{
if( p_instance )
delete p_instance;
}

QFoo::QFoo( QObject* parent ) : QObject( parent )
{
}

QFoo::~QFoo()
{
}

I want to connect its fooSignal() to a slot:

QFoo* pFoo = QFoo::getInstance();
connect( pFoo, SIGNAL( fooSignal() ), this, SLOT( aSlot() ) );

My problem is that I get compiler error with the connect:

"error C2243: 'type cast'*: conversion from 'QFoo *' to 'const QObject *' exists, but is not accessible"


Do you have any idea?
Thanks in advance.

[saa7_go]

If you modify:



class QFoo : QObject
{
....
};

to


class QFoo : public QObject
{
....
};

Does it work?

[punkypogo]

Oh yes thanks a lot, I guess I'm not completely awoken :D