Getting variable from QDialog class in main window.

madsm

Hi, I have made a QDialong class import importdata, and when the user accepts the the results I would like to pass them variables to the mainwindow class with a QObject conenction with the following code:

std::vector<std::string> names;
    std::vector<Vector3> start_pos;
    std::vector<double> radii;

    auto *importDataDialog = new importdata(this);

    QObject::connect(this->ui->importDataButton, &QPushButton::clicked,
                     importDataDialog, &QDialog::open);

    QObject::connect(importDataDialog, &QDialog::accepted,
                    [=](){
                        start_pos = importDataDialog->get_pos();
                        radii = importDataDialog->get_radii();
                        names = importDataDialog->get_names();
                        this->populateCombos(names);
                        this->ui->comboBoxCamPos->setEnabled(true);
                        this->ui->comboBoxCamCenter->setEnabled(true);
                    });

However when I try to compile I get this error

In lambda function:
/xxx/mainwindow.cpp:45:63: error: passing ‘const std::vector<Vector3>’ as ‘this’ argument discards qualifiers [-fpermissive]
                         start_pos = importDataDialog->get_pos();

The get_pos() and other functions are defined as:

namespace Ui {
class importdata;
}

class importdata : public QDialog
{
    Q_OBJECT

public:
    explicit importdata(QWidget *parent = 0);
    ~importdata();

    std::vector<Vector3> get_pos() const { return  body_positions;};
    std::vector<double> get_radii() const { return body_radii;};
    std::vector<std::string> get_names() const { return body_names;};

private:
    Ui::importdata *ui;

    std::vector<Vector3> body_positions;
    std::vector<double > body_radii;
    std::vector<std::string> body_names;
};

I am using Qt5.9.1 and C++11
Thnaks in advance!

madsm

This seems to work:

QObject::connect(importDataDialog, &QDialog::accepted,
    [=]() {
        this->populateCombos(importDataDialog->get_names());
        this->ui->comboBoxCamPos->setEnabled(true);
        this->ui->comboBoxCamCenter->setEnabled(true); }
    );