Painting in same widget above child objects of Itself

[dheerendra]

Sample code below.

1. I have widget with child buttons.
2. paintEvent(..) reimplemented. I'm drawing the line in paintEvent.

Issue - Line always below the buttons. I would like to see the line above the buttons. Is there a way to achieve this ?

MyWidget::MyWidget(QWidget *parent)
: QWidget(parent)
{
createUI();
}

void MyWidget::createUI()
{
b1 = new QPushButton("Monitor");
b2 = new QPushButton("Help");

hLyt = new QHBoxLayout;
hLyt->addWidget(b1);
hLyt->addWidget(b2);

this->setLayout(hLyt);

}

void MyWidget::paintEvent(QPaintEvent *event)
{
QPainter paint(this);
paint.setBrush(Qt::blue);
QPen pen;
pen.setWidth(4);
pen.setBrush(Qt::red);
paint.setPen(pen);
paint.drawLine(30,0,30,this->rect().height());
}

[SGaist]

Hi,

IIRC, in that kind of situation, you would rather have an overlay widget on top of the other and paint that one.

[ambershark]

@dheerendra The children are always drawn on top of the widget. So I don't think there's a way to do that other than putting another widget on top like @SGaist suggested.

I helped someone on the forums here recently with a tour my app type widget that did something similar. And I had to make it part of the widget I wanted to highlight. I couldn't just draw over other widgets. There may be a way but nothing popped into my mind while I was doing that.

[dheerendra]

Thank you @SGaist @ambershark. I have achieved my requirements through overlay. Just wanted to check possibility. I think it does not make sense to draw parent over children. So my question itself is not valid :)