Qt Creator 4.6.2 on MacOS High Sierra setText() not working

[valveCorp]

I am doing a very simple test. If a button is pressed, a text label is changed to something.

The qDebugs are printing fine, meaning the connections are ok, but the setText method is just not doing anything? The code compiles fine.

[mrjj]

Hi
and you are positive that the label has a size and
not ultra small or anything like that ?
What if you place a label in Designer and set its text ?

[valveCorp]

I can see it fine in design mode. setText() won't change the size, right?

[dheerendra]

It sets it. It does not refresh. Hide and show it again. It will work. Seems like a bug to me as well.

[SGaist]

Hi,

What version of Qt are you using ?

Can you provide a complete minimal example that shows that behavior ?

[dheerendra]

@valveCorp Just call repaint() after updating the text. It should work.

MyWidget::MyWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MyWidget)
{
    ui->setupUi(this);
    ui->label->setText("Dheerendra");
    this->m_lab = new QLabel("pthinks.com");
    ui->verticalLayout->addWidget(m_lab);
}
void MyWidget::on_pushButton_clicked()
{
   qDebug() << Q_FUNC_INFO << endl;
   this->m_lab->clear();
   this->ui->label->setText("Dheeru");
   this->m_lab->setText("http://www.pthinks.com");
   this->repaint();
}

[jsulm]

@dheerendra I'm wondering why repaint would be needed after updating QLabel text?

[dheerendra]

@jsulm It does not work if you no repaint(). Even update() is not working. Only repaint() works.

[jsulm]

@dheerendra But QLabel should repaint when its text is changed, shouldn't it?

[dheerendra]

@jsulm true. But it is not working. It is work-around.