Layout, widgets not inside ???

[SPlatten]

@JonB , I've used Qt Creator to create a mock layout, adding a Group Box, 3 x Radio Buttons then selected Lay Out Vertically from the Lay Out context submenu. Closed UI, clicked on Run qmake then opened up ui_clsMainWnd.h and searched for groupBox, this I the code:

groupBox = new QGroupBox(centralWidget);
groupBox->setObjectName(QString::fromUtf8("groupBox"));
groupBox->setGeometry(QRect(340, 210, 127, 101));
verticalLayout = new QVBoxLayout(groupBox);
verticalLayout->setSpacing(6);
verticalLayout->setContentsMargins(11, 11, 11, 11);
verticalLayout->setObjectName(QString::fromUtf8("verticalLayout"));
radioButton = new QRadioButton(groupBox);
radioButton->setObjectName(QString::fromUtf8("radioButton"));

verticalLayout->addWidget(radioButton);

radioButton_2 = new QRadioButton(groupBox);
radioButton_2->setObjectName(QString::fromUtf8("radioButton_2"));

verticalLayout->addWidget(radioButton_2);

radioButton_3 = new QRadioButton(groupBox);
radioButton_3->setObjectName(QString::fromUtf8("radioButton_3"));

verticalLayout->addWidget(radioButton_3);

This all looks good, I assume that 6 used or spacing is just a default along with the margins 11. I may have to experiment with the geometry 340, 210, 127, 101.

[JonB]

@SPlatten
Not sure what the question is here. Does "This all looks good" mean that when run it does indeed draw the radiobuttons correctly within their layout, as you have been trying to do in code but unsuccessfully?

You can see the code is exactly what I said and in the code example in the docs for QGroupBox. Create a QGroupBox, put a QVBoxLayout on it, add QRadioButtons onto the layout. That is all you should ever do.

The setGeometry() just corresponds to the position & size of the groupbox you have on your design canvas. I would not have thought you would need to do that, the QGroupBox should resize to correctly enclose its content. The spacing and margins are just defaults used by Designer, you can alter them.

You can play with this code in the ui_clsMainWnd.h file by editing, it will not get overwritten unless you alter the .ui file. And/or you can copy it to your own code and play with it there.

Whatever the difference from your own code which has not been working, you should be in a good position to discover that from here.

[SPlatten]

@JonB , sorry, yes, what I should have said, is that everything in my last post renders the correct solution and looks good, which I am now trying to replicate in my code, given that the XML is dynamic.

[JonB]

@SPlatten
Indeed, you must just make sure that what you come up from your parsing-creating-dynamically matches the static pattern you know works.

Everything has always felt like the radiobuttons are being added onto the QGroupBox directly where they need to be added onto the QVBoxLayout (and of course that must be set as the group box's layout).

[SPlatten]

@JonB , been out all day, just got back to trying out the stand along demo and no problems, it works:

#include "mainwindow.h"

#include <QApplication>
#include <QGroupBox>
#include <QRadioButton>
#include <QVBoxLayout>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;

    QGroupBox* groupBox = new QGroupBox(w.centralWidget());
    groupBox->setTitle("Demo");
    groupBox->setObjectName(QString::fromUtf8("groupBox"));
    groupBox->setGeometry(QRect(20, 110, 127, 101));
    QVBoxLayout* verticalLayout = new QVBoxLayout(groupBox);
    verticalLayout->setSpacing(6);
    verticalLayout->setContentsMargins(11, 11, 11, 11);
    verticalLayout->setObjectName(QString::fromUtf8("verticalLayout"));
    QRadioButton* radioButton = new QRadioButton(groupBox);
    radioButton->setObjectName(QString::fromUtf8("radioButton"));
    radioButton->setText("Radio 1");
    verticalLayout->addWidget(radioButton);

    QRadioButton* radioButton_2 = new QRadioButton(groupBox);
    radioButton_2->setObjectName(QString::fromUtf8("radioButton_2"));
    radioButton_2->setText("Radio 2");
    verticalLayout->addWidget(radioButton_2);

    QRadioButton* radioButton_3 = new QRadioButton(groupBox);
    radioButton_3->setObjectName(QString::fromUtf8("radioButton_3"));
    radioButton_3->setText("Radio 3");
    verticalLayout->addWidget(radioButton_3);

    w.show();
    return a.exec();
}

Which means I need to did around in my engine and find out why the same doesn't work when I repeat in my engine.

Debugger, watch window:

[SGaist]

As suggested before, you should simplify your code and approach the interface building in a simpler manner.

For your xml, you should pass it through a validator to ensure that what you parse is what your application expects. With that you can remove quite a lot of manual verifications.

Split your widget generation in smaller functions. It's harder to reason in one mega function that does everything.

[SPlatten]

@SGaist , the engine is quite simple, I just need to identify what is different, I will start by comparing the tree structure.