Custom signals?

[godot]

Hello everyone. I'm a new Qt user and I'm trying to make a picture clickable. I know about putting an image onto a push button, but I do not want the extra border around the picture. I also know about putting the image onto a label-- but labels do not have a clicked signal.
So I made a custom class that inherits QLabel. It passes a pixmap to QLabel in the constructor. I want to make a clicked signal for this class, but the default "clicked()" signal uses QObjects, and this is a QPixmap. Is there a way for me to use mousePressEvent() to make my own signal?? Or should I have the class inherit both QLabel and QAbstractButton?
Thanks for the help.

[jacek]

So I made a custom class that inherits QLabel. It passes a pixmap to QLabel in the constructor. I want to make a clicked signal for this class, but the default "clicked()" signal uses QObjects, and this is a QPixmap.

You have subclassed QLabel, not QPixmap. You can add any signal you want without any problems, just don't forget about Q_OBJECT macro.

[godot]

You have subclassed QLabel, not QPixmap.

Correct, but I am using the pixmap() property of QLabel to display the image, which is a QPixmap.
I tried connecting the class itself to the clicked signal also, but that does not work either, even though I have the Q_OBJECT macro in the class.

[jacek]

Are there any errors on the console (you need "CONFIG += console" to see the console on windows)? How did you declare the signal? How do you make the connection? Could you post the relevant code?

[godot]

Course. Its very simple.

class ButtonLabel: public QLabel
{
	Q_OBJECT
 
public:
	ButtonLabel(QPixmap &pic);
 
Q_SIGNALS:
	void clicked();
 
 
};

class ButtonLabel: public QLabel
{
	Q_OBJECT

public:
	ButtonLabel(QPixmap &pic);

Q_SIGNALS:
	void clicked();


};

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ButtonLabel::ButtonLabel(QPixmap &pic)
{
	setPixmap(pic);
}

ButtonLabel::ButtonLabel(QPixmap &pic)
{
	setPixmap(pic);
}

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int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
 
	QPixmap pix(":/button.jpg");
	ButtonLabel label(pix);
label.connect(label, SIGNAL(clicked()), label, SLOT(close()));
	label.show();
 
 
	return app.exec();     
}

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	
	QPixmap pix(":/button.jpg");
	ButtonLabel label(pix);
label.connect(label, SIGNAL(clicked()), label, SLOT(close()));
	label.show();


	return app.exec();     
}

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Edit: Ah, oops, I cut out the connect line... putting it back in, in the third code box

[jacek]

You don't emit that signal anywhere (and you should use &label in the connect statement).

[godot]

Thanks. It compiled alright when I added "&"s, but it did not close... probably because its not emitting a clicked signal, so it does not register as being clicked. So, I guess my question is now how do I emit a signal?

[godot]

Ooo. Nevermind. Never thought it'd be as easy as just adding "emit connect();" Thanks!