Signal/Slot problem by subclassing from QTreeWidgetItem

[Jonas_]

Hi there,

I've got a Problem. Sorry for my bad english, that the reason why I want to show you my code. This tells more than my 1000 words...
1st my Class,

using namespace MyNamespace;
class MyTreeWidgetItem : public QTreeWidgetItem
{
	Q_OBJECT
 
public:
	SingleScanTreeWidgetItem(QTreeWidget *parent);
	~SingleScanTreeWidgetItem();
 
	void makeActions(QMenu* menu);
 
public slots:
	void onAction();
};

using namespace MyNamespace;
class MyTreeWidgetItem : public QTreeWidgetItem
{
	Q_OBJECT

public:
	SingleScanTreeWidgetItem(QTreeWidget *parent);
	~SingleScanTreeWidgetItem();

	void makeActions(QMenu* menu);

public slots:
	void onAction();
};

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Okay, and here is my implementation:

MyTreeWidgetItem::MyTreeWidgetItem(QTreeWidget *parent)
	: QTreeWidgetItem(parent)
{
	setText(0,"The Text");
}
 
MyTreeWidgetItem::~MyTreeWidgetItem()
{
}
 
void MyTreeWidgetItem::makeActions(QMenu* menu)
{
	QAction* action = new QAction(QString("Test"),menu);
	menu->addAction(action);
 
	QObject::connect(action,SIGNAL(triggered()),this,SLOT(onAction()));
}
 
void MyTreeWidgetItem::onAction()
{
	int test(0);
}

MyTreeWidgetItem::MyTreeWidgetItem(QTreeWidget *parent)
	: QTreeWidgetItem(parent)
{
	setText(0,"The Text");
}

MyTreeWidgetItem::~MyTreeWidgetItem()
{
}

void MyTreeWidgetItem::makeActions(QMenu* menu)
{
	QAction* action = new QAction(QString("Test"),menu);
	menu->addAction(action);

	QObject::connect(action,SIGNAL(triggered()),this,SLOT(onAction()));
}

void MyTreeWidgetItem::onAction()
{
	int test(0);
}

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So, thats all. But my compiler gives my an error:

CompileError C2665:
'function' : none of the number1 overloads can convert parameter number2 from type 'type'

So whats my mistake? How can I solve this problem?
Did anybody knows that?

Ciao + Thanks

[wysota]

QTreeWidgetItem does not inherit QObject.

[Jonas_]

How can I solve this problem?
I want to have a context menu on my TreeWidgetItems.

[wysota]

You want to have context menu on your table widget, not its items. So implement it there using the regular means available for widgets.

[faldzip]

first of all your constructor name does not match class name :]
second of all add you context menu to your QTreeWidget not to your items. Then check which item was clicked