[Solved] No such signal - My own class

dpatrick

Dear all,

I created my own PushButton to receive a signal when my button get focus. Please see code below:

@
class MyPushButton : public QPushButton
{
Q_OBJECT

public:
MyPushButton(QWidget *parent = 0);

signals:
void getFocus();

protected:
void focusInEvent (QFocusEvent * event);

};

MyPushButton::MyPushButton(QWidget *parent) :
QPushButton(parent)
{
}

void MyPushButton::focusInEvent (QFocusEvent * event)
{
emit getFocus();
QPushButton::focusInEvent(event);
}

@

And in the main application I connect the signal to the slot.

@
connect(ui->btn1, SIGNAL(gotFocus()), this, SLOT(gotFocus1()));
@

When I start the application, I receive the following message:

@
Object::connect: No such signal MyPushButton::gotFocus() in ../page1.cpp:26
Object::connect: (sender name: 'btn1')
Object::connect: (receiver name 'Page1')
@

So, what is wrong in my code? Any ideas?

I promoted my QPushButton to MyPushButton.

Thanks a lot.

iunknwn

Typo: Error is for gotFocus. Signal name is getFocus.

iunknwn

Good Programming Practice: If you are using Visual Studio, let intellisense type the signal out as
@connect(sender, SIGNAL(sender->signalName())....@
Once you get it filled, delete "sender->". This way you can never get the signal name typed incorrectly.

alexander

[quote author="iunknwn" date="1289581834"]Good Programming Practice: If you are using Visual Studio, let intellisense type the signal out as
Once you get it filled, delete "sender->". This way you can never get the signal name typed incorrectly.
[/quote]

or use QtCreator, it shows available signals when you write code.

dpatrick

Thanks a lot, I could not see my mistake.