Use "on_any_clicked()" Slot from a dinamic generated PushButton

yczo

Hello, I have generated a pushButton dinamically into an object
//*****************************************************
getmsg::getmsg(QWidget *parent) : QWidget(parent) {
QPushButton *askB = new QPushButton;
}

The Question is, how can implement, the on_---_clicked() slot?
I have tried with the code below, but it does not work.

Thanks in advance

//*****************************************************
void getmsg::on_askB_clicked(){
qDebug() << "Clicked";
}

mrjj

Hi
you just need to connect it

qDebug() << "can connect:" << connect(askB, SLOT(clicked()), this,SLOT(on_askB_clicked));

Ps, dont call it on_xx
on_askB_clicked
it will trigger the auto connect
feature but it dont work since u add button later and
it might show warnings.

so rename to askB_clicked() if u get warning.

yczo

Hello and thank you.

(The code is inside an Object) I tried

//********************************************
getmsg::getmsg(QWidget *parent) : QWidget(parent)
{
askB = new QPushButton(this);
askB->resize(wAskB,hLine+2);
askB->setText("Read");
qDebug() << "can connect: " << connect(askB,SIGNAL(clicked()),this,SLOT(askB_clicked()));
}

//****************************************************
void getmsg::askB_clicked(){
qDebug() << "clicked";
}
//************************************************
class getmsg : public QWidget
{
public:
// ampel *circle;
getmsg(QWidget *parent = 0);

private:
QPushButton *askB;

public slots:
void askB_clicked();

};
but it does not work :-(

The console say:
QObject::connect: No such slot QWidget::askB_clicked() in ..\newGui\getmsg.cpp:48
can connect: false

mrjj

you must add Q_OBJECT to your class to use signals

class getmsg : public QWidget
{
Q_OBJECT

and after
you must run qmake
make sure its run else it will never work.
if it still says "No such slot "
clean your build folder completely.

yczo

Thank you very much, it works!!

mrjj

@yczo
np. its easy to forget to add
Q_OBJECT
:)