[Qt-interest] moc / multiple inheritance issue

[Jimmy Cooksey]

Hello Everyone,

I'm experiencing a strange problem where moc appears to be hijacking a
method call to my object that is multiply inheriting from some widget
and another base class.

Here is some sample code:

// This is the base class
class DeclareYourself
{
	public:	
	DeclareYourself() { };
	virtual ~DeclareYourself() { };
	virtual void declareYourself() = 0;
};

class SpecialLineEdit : public QLineEdit, public DeclareYourself
{

	Q_OBJECT

	public:
	SpecialLineEdit(QWidget* parent) : QLineEdit(parent), DeclareYourself();
	~SpecialLineEdit() { }
	void declareYourself()
	{
		setText("I'm a line edit!");
		return;
	}
};

So when I create this object, I'm using something like...
QWidget* specialLineEdit = new SpecialLineEdit(this);

The interesting thing is that this call...
((*DeclareYourself) specialLineEdit)->declareYourself();
... never calls SpecialLineEdit::declareYourself()
It immediately calls this:
SpecialLineEdit::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
and of course, I have no idea why.

The code itself compiles just fine, and the application does not crash.

I have created a sample project demonstrating my problem:
http://www.jimster.org/QtTestCase.zip

Any help would be greatly appreciated!

Thanks,
Jimmy