Qt signals slots again

[bmpix]

Hi,
A really newbie question.

QPushButton* buttonRun = new QPushButton(QString("Run"));
 
QGridLayout* layout_ = new QGridLayout;
layout_->addWidget(buttonRun,1,0);	
widget->setLayout(layout_);
 
connect(buttonRun,SIGNAL(clicked()),this,SLOT(runAlgorithm()));

QPushButton* buttonRun = new QPushButton(QString("Run"));

QGridLayout* layout_ = new QGridLayout;
layout_->addWidget(buttonRun,1,0);	
widget->setLayout(layout_);

connect(buttonRun,SIGNAL(clicked()),this,SLOT(runAlgorithm()));

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connect() returns true, but the slot is never called. I'm pretty sure the signal is emitted, because

connect(buttonRun,SIGNAL(clicked()),qApp,SLOT(aboutQt()));

connect(buttonRun,SIGNAL(clicked()),qApp,SLOT(aboutQt()));

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works. I also think that the slot is defined properly, because if I do something like:

QObject::connect(this,SIGNAL(runThisBastard()),this,SLOT(runAlgorithm()));
emit runThisBastard();

QObject::connect(this,SIGNAL(runThisBastard()),this,SLOT(runAlgorithm()));
emit runThisBastard();

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the slot is called properly.

Just in case here's my definition of the class:

class A: public QObject, public IHasPropertiesPage
{
	Q_OBJECT
public:
 ....
public slots:
	void runAlgorithm ();
...
};

class A: public QObject, public IHasPropertiesPage
{
	Q_OBJECT
public:
 ....
public slots:
	void runAlgorithm ();
...
};

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Any help would be greatly appreciated.