QT - creating layout from .ui files - c++

Question

I have code like below. I have some data in database and I need to create view structure to display it. I don't have big experience in Qt programming, I've made more things in PHP, HTML and CSS. I need to do something like in HTML - when you have a box (for example div) without extra style and you put inside some data this div tag will display all data's inside. But with following code I've got only a part of datas from widgets loaded from file. Behavior of GridLayout in MainWindow is similar to div style="max-width: 200px; max-height: 200px; overflow:hidden". And also Layout elements from children's file has the same behavior...
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "databasemanager.h"
#include "ycexception.h"
#include <QDebug>
#include <QSqlQuery>
#include <QtUiTools>
#include <QLabel>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
createStructureFromDb();
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::createStructureFromDb() {
try {
dbManager = new DatabaseManager();
}
catch(YCException e) {
//TODO: show dialog with message
qDebug() << e.what();
exit(-1);
}
QSqlQuery groupsQuery = dbManager->getGroups();
while(groupsQuery.next()) {
Group group;
group.setIdGroup(groupsQuery.value(0).toInt());
group.setName(groupsQuery.value(1).toString());
QUiLoader loader;
QFile file(":/forms/group.ui");
file.open(QFile::ReadOnly);
QWidget *formWidget = loader.load(&file);
file.close();
(formWidget->findChild<QLabel*>("groupName"))->setText(group.getName());
ui->gridLayout->addWidget(formWidget);
QVBoxLayout* groupItems = formWidget->findChild<QVBoxLayout*>("groupItems");
QSqlQuery cardsQuery = dbManager->getGroupCards(group.getIdGroup());
while(cardsQuery.next()) {
Card card;
card.setIdCard(cardsQuery.value(0).toInt());
card.setContent(cardsQuery.value(1).toString());
card.setDueDate(cardsQuery.value(2).toString());
card.setIdGroup(cardsQuery.value(3).toInt());
group.addCard(card);
QFile file(":/forms/card.ui");
QWidget *cardWidget = loader.load(&file);
file.close();
(cardWidget->findChild<QLabel*>("contentLabel"))->setText(card.getContent());
(cardWidget->findChild<QLabel*>("dueDateLabel"))->setText(card.getDueDate());
groupItems->addWidget(cardWidget);
}
groups.insert(group.getIdGroup(), group);
}
ui->label->setText("really long textreally long textreally long textreally long textreally long textreally long textreally long textreally long textreally long textreally long textreally long text");
this->layout()->activate();
}

Answer 1

overflow:hidden is all but explicit for persons like me that have only a very little knowledge of web technologies (but I can google it). But, saying that you want scrollbars is a lot more expressive... I used this page to understand what you want.
So, for what you want: GridLayout is not like html's div. If you want the content of a widget to be scrolled, you have to put the widget in a QScrollArea, and put that scroll area in the cell of the GridLayout that first contained your widget.
More specifically:
overflow:visible : not possible
overflow:hidden : default behavior
overflow:scroll : use QScrollArea
overflow:auto : use QScrollArea
overflow:inherit : possible, but you need to write quite a bit of code to do this. Also, useless in a well-designed interface