QObject::connect: No such signal

[caseyong]

Hi,

I am a newbie to qt... I thought I followed the obvious steps to define "signal" for a customized widget (in my example, BinaryButtonWg). i.e.,

1. declare the signal in BinaryButtonWg.h
2. connect signal and slot with same arguments
3. emit signal

... But, somehow, there is always a complain of QObject::connect No such signal, when I try to connect the signal in my application of the BinaryButtonWg class.

And, when I use dumpObjectInfo(), it showed

OBJECT BinaryButtonWg::mask
SIGNALS OUT
<None>
SIGNALS IN
QHButtonGroup::unnamed


I believe I could have missed out something fundamental.. I will appreciate your help.. Following are my codes of BinaryButtonWg:

BinaryButtonWg.h

#ifndef BINARYBUTTONWG_H
#define BINARYBUTTONWG_H
 
#include <qwidget.h>
#include <qhbuttongroup.h>
#include <qvbox.h>
#include <qsize.h>
 
class BinaryButtonWg : public QWidget
{
        Q_OBJECT
        public:
        BinaryButtonWg(QSize bsize, unsigned int bitsize=8, QWidget *parent = 0, const char *name = 0 , const char *title = 0);
        ~BinaryButtonWg() {};
 
 
        public slots:
                void enableBits(unsigned int bits);
 
        private slots:
                void buttonPressed(int buttonId);
        signals:
                void bbChanged(unsigned int newValue);
        private:
        QHButtonGroup* _bg;
        QVBox* _vb;
                unsigned int _value;
                unsigned int _bitsize;
 
};
 
#endif

#ifndef BINARYBUTTONWG_H
#define BINARYBUTTONWG_H

#include <qwidget.h>
#include <qhbuttongroup.h>
#include <qvbox.h>
#include <qsize.h>

class BinaryButtonWg : public QWidget
{
        Q_OBJECT
        public:
        BinaryButtonWg(QSize bsize, unsigned int bitsize=8, QWidget *parent = 0, const char *name = 0 , const char *title = 0);
        ~BinaryButtonWg() {};


        public slots:
                void enableBits(unsigned int bits);

        private slots:
                void buttonPressed(int buttonId);
        signals:
                void bbChanged(unsigned int newValue);
        private:
        QHButtonGroup* _bg;
        QVBox* _vb;
                unsigned int _value;
                unsigned int _bitsize;

};

#endif

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In BinaryButtonWg.cpp,

BinaryButtonWg::BinaryButtonWg(QSize bsize, unsigned int bitsize,  QWidget *parent, const char *name , const char* title ): QWidget(parent, name, 0)
{
 _bg = new QHButtonGroup(_vb);
 .
 .
// this one work fine
connect( _bg, SIGNAL( clicked(int) ), this, SLOT( buttonPressed(int)));
}
 
void BinaryButtonWg::buttonPressed( int buttonId)
{
        _value ^= (1 << buttonId);
        printf("buttonPressed! new value: 0x%02X\n", _value);
        emit  this->bbChanged(_value);
}

BinaryButtonWg::BinaryButtonWg(QSize bsize, unsigned int bitsize,  QWidget *parent, const char *name , const char* title ): QWidget(parent, name, 0)
{
 _bg = new QHButtonGroup(_vb);
 .
 .
// this one work fine
connect( _bg, SIGNAL( clicked(int) ), this, SLOT( buttonPressed(int)));
}

void BinaryButtonWg::buttonPressed( int buttonId)
{
        _value ^= (1 << buttonId);
        printf("buttonPressed! new value: 0x%02X\n", _value);
        emit  this->bbChanged(_value);
}

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Rgds

Casey