Access tab created in runtime - Qt C++

JonB

@HenkCoder said in Access tab created in runtime - Qt C++:

@JonB Uhh no, how do I do that? Like a if(ui-tabWidget->currentWidget()->metaObject()->className == "QTab")?

I meant e.g.

TextEdit *te = new TextEdit();
ui->tabWidget->addTab(te, QString("New Document " + QString::number(ui->tabWidget->count() + 1)));
Q_ASSERT(ui->tabWidget->currentWidget() == te);

JonB

@HenkCoder said in Access tab created in runtime - Qt C++:

@JonB Oh but I don't need the TextEdit, I need to access the tab.

Let's start again. You want to color the background of just the tab itself, not its page widget? I presumed from your code you meant the latter.

HenkCoder

@JonB Yes, I want to set the background color of the tab itself, sorry if I explained myself badly.

JonB

@HenkCoder
Ah! Then accessing the currentWidget() or the TextEdit is not what you want --- that is for the page-widget itself.

Most people would do this via stylesheet:

QTabBar::tab  {
    background-color: ...;
}

If you want to do it in code I suggest you Google qtabwidget tab color as it looks a bit involved, e.g. https://www.qtcentre.org/threads/2986-How-to-change-color-of-Tab-in-QTabWidget.

HenkCoder

@JonB Oh right! Let me try with stylesheets.

HenkCoder

@JonB Hey, I tried but that changes the background-color of where the name of the tab is. But I need to set the background-color of the tab page, behind the custom TextEdit.

JonB

@HenkCoder said in Access tab created in runtime - Qt C++:

Hey, I tried but that changes the background-color of where the name of the tab is.

Yes, and that's exactly what I thought you said you want to change....

So now I'm not sure what you want. I suggest you look at e.g. https://stackoverflow.com/questions/38369015/customuzing-qtabwidget-with-style-sheets and https://doc.qt.io/qt-5/stylesheet-examples.html#customizing-qtabwidget-and-qtabbar to determine just what you want to change the color on.

ChrisW67

@HenkCoder addTab() returns the index of the new tab, so this should fly:

int newTabIndex = ui->tabWidget->addTab(new TextEdit(), QString("New Document " + QString::number(ui->tabWidget->count() + 1)));
QWidget *newTabWidget = ui->tabWidget->widget(newTabIndex);
...

HenkCoder

@JonB
Okay, I'll explain better, I need to access the tab:

behind the textEdit, not where the tab name is.

HenkCoder

@ChrisW67 hey, I tried ur solution but the code doesn't work:

int tabIndex = ui->tabWidget->addTab(new TextEdit(), QString("New Document " + QString::number(ui->tabWidget->count() + 1)));
    ui->tabWidget->setCurrentIndex(ui->tabWidget->count() - 1);
    QWidget *tab{ui->tabWidget->widget(tabIndex)};
    QPalette temp{tab->palette()};
    temp.setColor(QPalette::Window, QColor(54,54,54));
    tab->setPalette(temp);

JonB

@HenkCoder
You do not need to explain better to me, you need to use the links I gave you to find out which stylesheet rule gives you the result you are looking for.