addWidget other place than setCentralWidget()

Code:

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void MainWindow::setGUI()
{
     QWidget* frame = new QWidget;
    QToolButton *toolButton;
    _layout = new QVBoxLayout;
    frame->setLayout(_layout);
     tabWidget = new QTabWidget();
     tab = new QWidget();
     pushButton = new QPushButton(tab);
     tabWidget->addTab(tab, QString());
     _layout->addWidget(tabWidget);
     scrollArea = new QScrollArea;
     scrollArea->setWidget(frame);
     scrollArea->setWidgetResizable(true);
     setCentralWidget(scrollArea);
}

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This above works fine, i got scrollArea->tabWidget->tab->pushButton, but if I'd like to addWidget from other method/function to this layout i am not able to add new widget to "tab". Everything is under tabWidget which is part of scrollArea (centralWidget).

Code:

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void MainWindow::addToGUI()
{
        while(true)
        {
 
                QGroupBox* newGB = new QGroupBox("group box"); 
                QFormLayout* form_layout = new QFormLayout;
 
                layout->addRow("ID1", new QLabel(function()));
                layout->addRow("ID2", new QLabel(function()));
                layout->addRow("ID3", new QLabel(function()));
 
                newGB->setLayout(layout);
               this->_layout->addWidget(newGB); // i want this in tabWidget->tab, i know that there is setCentralWIdget(scrollArea) and that is why i get this under tabWidget.
         }
}

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Here is what i mean -> Attachment 7114

How to solve this?

Just add needed widgets to QTabWidget's tab (better place layout there), not to main window's layout.

Quote:

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Originally Posted by Oleg

Just add needed widgets to QTabWidget's tab (better place layout there), not to main window's layout.

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I'm QT noob, and i'm not sure what u mean. since a few yeras i only use php oop.
I removed this line "this->_layout->addWidget(newGB);" from addToGUI(), and wrote "_layout->addWidget(newGB);" in setGUI() but I got app crash, that exe is not responding (headers are correct).

1. BTW, create all widgets in visual editor, it's much easier.
2. Add layout to your tab

Code:

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tab->setLayout(new QVBoxLayout());

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3. Add QPushButton and QGroupBox to that layout

Code:

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tab->layout()->addWidget(new QPushButton());
tab->layout()->addWidget(newGB);

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