How to get the text on qpushbutton?

Question

I am loading .ui files via QUiloader, and showing the GUI in my application.

QWidget *mywidget = loader.load(file, this);
QList<QWidget*> wlist = mywidget.findChildren<QWidget *>()

I would like to know what is the text on QPushbutton. I know there is a method text() to get a text from Pushbutton, but it is not accessible when I do:

QString btext = wlist.at(1).text();

Any idea how I can get the text from QPushbutton, and other Widgets, when they grouped as QWidget?

Thanks.

Answer 1

You should search for QPushButtons instead of QWidgets:

QList<QPushButton*> blist = widget.findChildren<QPushButton*>();

Still your code wouldn't compile. The last line should read:

QString btext = blist.at(1)->text();

Using -> since you are accessing a pointer, not the widget. Also you should check if the findChildren() function actually returnes enough buttons. You would get a crash or assertions when accessing a list item by an invalid index.

Also please note that at(1) does not return the first but the second item in the list (lists start from 0).

Update: If you search for QWidgets and cast each of them you need to take care of getting a nullptr:

QList<QWidget*> wlist = widget.findChildren<QWidget*>();
foreach (QWidget* w, wlist)
{
   QPushButton* b = dynamic_cast<QPushButton*>(w);
   // If "w" is not a button "b" is nullptr
   if (b)
   {
      QString btext = b->text();
   }
}