Accessing aspects of QObject stored in QVector - qt

Question

I have a QVector of QObjects QVector<QWidget*> question_vector;. These widgets are questions. (My application is like a questionnaire thing).
When creating a questionnaire, question types are chosen from the selection on a comboBox, and within Questions class, the question is created, and stored in the QVector.
void CreateSurvey::comboBox_selection(const QString &arg1)
{
if(arg1 == "Single Line Text")
{
Question *singleLineText = new Question("Single Line Text");
surveyLayout->addWidget(singleLineText);
question_vector.append(singleLineText);
qDebug() << "Number of items: "<< question_vector.size();
} ...
}
void Question::create_singleLineEdit()
{
QVBoxLayout *vLayout = new QVBoxLayout;
QLabel *titleLabel = new QLabel("Title");
vLayout->addWidget(titleLabel);
QLineEdit *inputText = new QLineEdit;
vLayout->addWidget(inputText);
QLabel *commentsLabel = new QLabel("Comments");
vLayout->addWidget(commentsLabel);
QLineEdit *commentsText = new QLineEdit;
vLayout->addWidget(commentsText);
ui->frame->setLayout(vLayout);
}
This is what it looks like
The SingleLineEdit is the widget, the title, titleEdit, comments, commentsEdit.
How do I access, for example the text from an individual component of the widget, the commentsText QLineEdit?

Answer 1

Cast the element to the a QLineEdit:
QLineEdit *line_edit = dynamic_cast <QLineEdit *> (question_vector[3]);
if (line_edit)
{
QString text = line_edit->text();
}
This is a basic aspect of C++ programming; you probably should do some reading on C++ classes, how to derive them, how to use base class pointers and derived class pointers, and so on.

Answer 2

I think I've managed to solve what I was trying to do (at least partly)
So I had here
void Question::create_singleLineEdit()
{
QVBoxLayout *vLayout = new QVBoxLayout;
QLabel *titleLabel = new QLabel("Title");
vLayout->addWidget(titleLabel);
QLineEdit *inputText = new QLineEdit;
vLayout->addWidget(inputText);
QLabel *commentsLabel = new QLabel("Comments");
vLayout->addWidget(commentsLabel);
QLineEdit *commentsText = new QLineEdit;
vLayout->addWidget(commentsText);
ui->frame->setLayout(vLayout);
}
What I did was changed stuff like QLineEdit *commentsText = new QLineEdit; to
section_commentsText = newLineEdit; - Having QTextEdit *section_commentsText in my question.h.
I was then able to do
Question *object = question_vector[0];
QString text = object->section_commentsText->text();
qDebug() << text;