No such slot...

ProgrammerAtHeart3344

QObject::connect: No such slot <class name>::this->ResponseOneClicked() in <class name>.cpp:8
QObject::connect:  (sender name:   'ResponseOneBtn')_
QObject::connect:  (receiver name: '<classname>Class')

As you can see, I get this error when I try to use the slot. Here is the header file. Class name removed as it is kind of inappropriate.

class <class name> : public QMainWindow
{
	Q_OBJECT

public:
	<class name>(QWidget *parent = 0);
	~<class name>;

	QPushButton* getResponseOne();
	QPushButton* getResponseTwo();
	QPushButton* getResponseThree();
	QPushButton* getResponseFour();
	QPushButton* getShowTweet();
	QFrame* getTweetFrame();

	public slots:
	void ResponseOneClicked();
	void ResponseTwlClicked();
	void ResponseThreeClicked();
	void ResponseFourClicked();
	void ShowTweet();
	void ShowFrame();

what can I do to fix this? Am I doing it right?

jsulm

Can you show how you connect the signal to that slot?

ProgrammerAtHeart3344

@jsulm

<class name>::<class name>(QWidget *parent)
	: QMainWindow(parent)
{
	ui.setupUi(this);
	this->disableAndHide();
	QObject::connect(this->getResponseOne(), SIGNAL(clicked()), this, SLOT(this->ResponseOneClicked()));

}

jsulm

The problem is most probably this: SLOT(this->ResponseOneClicked()) - remove this->.
No need to use QObject:: in front of connect.
No need to use this-> in this->disableAndHide();
No need to use this-> in this->getResponseOne()
Why do you call this->getResponseOne() to get the pointer to the button? Don't you have the pointer in the same class already?

jsulm

connect(getResponseOne(), SIGNAL(clicked()), this, SLOT(ResponseOneClicked()));

ProgrammerAtHeart3344

@jsulm Thanks, I appreciate it.

kshegunov

@jsulm

No need to use QObject:: in front of connect.

True in principle. There are a few non-static overloads, however, and it's not a bad style to explicitly show the static function is used in this case. Overloading may get confusing if one of the other methods is used, e.g.:

connect(getResponseOne(), SIGNAL(clicked()), SLOT(ResponseOneClicked()));

Walux

@ProgrammerAtHeart3344 said:

this->disableAndHide();

Maybe by disabling your class , your slots are "disabled" too.

ProgrammerAtHeart3344

@Walux I managed to fix it, thank you. Having another problem now.

Walux

@ProgrammerAtHeart3344

You're welcome , and you're free to post your new problem but in an another thread , to maintain information order in the forum :)

And please mark the topic as solved if it's the case :)

ProgrammerAtHeart3344

@Walux How do I mark the topic as solved? Also, I did post my problem as a new thread. I just forget the name right now.

Ratzz

@ProgrammerAtHeart3344 said:

How do I mark the topic as solved?

Refer this
http://forum.qt.io/topic/62700/hitchhiker-s-visual-guide-to-the-qt-forum

ProgrammerAtHeart3344

@Ratzz Thank you.