Cannot setup Inherited class's method as slot for click signal

2018-06-13 18:53:13

So basically I inherited from QPushButton and I want to handle the signal right inside the class. I also promoted the button I want to this new class.

So I did:

QObject::connect(ui->pickWatermarkButton, SIGNAL(clicked()),ui->pickWatermarkButton, SLOT(handleButton()));

The handleButton exists and is declared as a public slot. However, when I click the button, nothing happens.

I changed the slot to a location function, inside mainWindow, and surprise, it works! Apparently it only refuses to work when I try to use as a slot a method in the inherited class!

To solve this, just add the Q_OBJECT macro to your inherited class.

If you get "undefined reference to vtable" compilation errors, make sure you defined a destructor. If they still appear, right click on your project and select "run qmake", and then build your project again.

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