dynamicly access ui-elements

AdmiralCrunch

Hi,

I have a number of label-elements in my UI which I want to access dynamicly from a foreach().
Is there a way to do it?

I have tried like

int i = 0;
foreach(const QString &str, patternSlices) {
   i++;       
   ui->step_(i)->blablablablabla();           
    }

I'm searching all the time, but can't figure it out how to do that :/

hskoglund

Hi, for example, you can use findChildren like this:

    for (QLabel* l : findChildren<QLabel*>())
        qDebug() << l->text();

AdmiralCrunch

Hi,
thank you for the quick answer, but I don't get it :/
how should findChildren() get me the correct label-element?

hskoglund

Well if you have a common objectName for the labels you're interested in, you could look for it, like:

for (QLabel* l : findChildren<QLabel*>())
    if (l->objectName().startsWith("patternSli"))
    // party on the label

AdmiralCrunch

Thank you :)

it took me a while, until I finally got it working :)

int i = 0;
    foreach(const QString &str, patternSlices) {
        i++;
        QString labelName = QString("step_%1").arg(i);
        QLabel* label = findChild<QLabel*>(labelName);
        if(label) {           
                label->setPixmap(otherStep.scaled(100,100, Qt::KeepAspectRatio));
                }
        }