Clicked signal and slot for a QStyleOptionButton drawn inside paintEvent

hbatalha

I have a widget where I draw this button:

void QWidget::paintEvent(QPaintEvent *event)
{
    QIcon icon = qApp->style()->standardIcon(QStyle::SP_MessageBoxCritical);
    QStyleOptionButton opt;
    opt.state = QStyle::State_Active | QStyle::State_Enabled;
    opt.rect = QRect(50, 25, 100, 50);
    QPainter painter(this);
    painter.drawText(MAIN.height() / 2, 30, 80, 30, Qt::AlignCenter, "");
    painter.beginNativePainting();
    qApp->style()->drawControl(QStyle::CE_PushButton,&opt,&painter);
    painter.endNativePainting();

    QWidget::paintEvent(event);
}

I want to know how would I connect it to a slot when it's clicked, if that's possible.

Christian Ehrlicher

If you want a QPushButton why don't you simply use one instead trying to paint it by yourself?

If you really want to handle a click on a widget by yourself, you have to overwrite QWidget::mousePressEvent()

hbatalha

@Christian-Ehrlicher Because the button has to drawn inside paintEvent, like everything else in the widget

mpergand

@hbatalha
If you use QAbstractButton as the base class, the following signals are available:

void clicked(bool checked = false)
void pressed()
void released()
void toggled(bool checked)

as well as standard button states: checkable, checked, pressed (isDown) etc.

Christian Ehrlicher

@hbatalha said in Clicked signal and slot for a QStyleOptionButton drawn inside paintEvent:

Because the button has to drawn inside paintEvent, like everything else in the widget

This does not make any sense to me. Why needs a widget paint a QPushButton? Why can't you just simply use a QPushButton widget?

hbatalha

@Christian-Ehrlicher sorry. that's true, that doesn't make sense. I was thinking about it in a different way ( a wrong way btw).
Using the regular qpushbutton does the job.