Getting a widget by string

Question

In a for loop, I can construct a string.

foreach (...) {
  QString str = "pushButton" + QString::number(count);
  // this gives pushButton1

  // Now I want to get the button widget that has this string as it's variable name 
  // and modify it in some way, e.g. change it's button caption

  str->setText("New Title");

  count ++;
}

Is this possible? if so, then how

edited: here's how i created the buttons

for (int i=0; i<total; i++) {
    QPushButton *btn = new QPushButton();
    btn->setObjectName("pushButton" + QString::number(i));
    ui->horizontalLayout->addWidget(btn);
}

Hi @eyllanesc. I created it programatically in a loop and have their names assigned with the loop variable. — GeneCode
– GeneCode, Commented Sep 13, 2017 at 8:39
i added them to a layout. does that automatically assign them a parent? — GeneCode
– GeneCode, Commented Sep 13, 2017 at 8:40
You can show you have created it to understand you better and give you an appropriate solution. — eyllanesc
– eyllanesc, Commented Sep 13, 2017 at 8:41

eyllanesc · Accepted Answer · 2017-09-13 09:12:26Z

4

You can get the button through the parent and objectName, in your case the parent is this, so you should use the following:

QWidget* p =  ui->horizontalLayout->parentWidget();

for(int count=0; count<total; count++){
    const QString str = "pushButton" + QString::number(count);
    QPushButton* btn = p->findChild<QPushButton *>(str);
    btn->setText("someText");
}

edited Sep 13, 2017 at 9:12

answered Sep 13, 2017 at 8:50

eyllanesc

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