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Update app-types.md #228

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3f8ee45
Update app-types.md
Sep 18, 2023
ab5058d
Updated app-types.md
Sep 20, 2023
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24 changes: 12 additions & 12 deletions docs/ch02-start/app-types.md
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Original file line number Diff line number Diff line change
Expand Up @@ -132,7 +132,7 @@ class CustomWidget : public QWidget
{
Q_OBJECT
public:
explicit CustomWidget(QWidget *parent = 0);
explicit CustomWidget(QWidget *parent = nullptr);
void paintEvent(QPaintEvent *event);
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
Expand Down Expand Up @@ -191,7 +191,7 @@ class CustomWidget : public QWidget
{
Q_OBJECT
public:
explicit CustomWidget(QWidget *parent = 0);
explicit CustomWidget(QWidget *parent = nullptr);
private slots:
void itemClicked(QListWidgetItem* item);
void updateItem();
Expand Down Expand Up @@ -225,9 +225,9 @@ CustomWidget::CustomWidget(QWidget *parent) :
m_widget->addItem(city);
}

connect(m_widget, SIGNAL(itemClicked(QListWidgetItem*)), this, SLOT(itemClicked(QListWidgetItem*)));
connect(m_edit, SIGNAL(editingFinished()), this, SLOT(updateItem()));
connect(m_button, SIGNAL(clicked()), qApp, SLOT(quit()));
connect(m_widget, &QListWidget::itemClicked, this, &CustomWidget::itemClicked);
connect(m_edit, &QLineEdit::editingFinished, this, &CustomWidget::updateItem);
connect(m_button, &QPushButton::clicked, qApp, &QApplication::quit);
}

void CustomWidget::itemClicked(QListWidgetItem *item)
Expand Down Expand Up @@ -256,7 +256,7 @@ class CustomWidgetV2 : public QWidget
{
Q_OBJECT
public:
explicit CustomWidgetV2(QWidget *parent = 0);
explicit CustomWidgetV2(QWidget *parent = nullptr);
private:
QGraphicsView *m_view;
QGraphicsScene *m_scene;
Expand All @@ -269,15 +269,15 @@ In the implementation, the scene gets attached to the view first. The view is a
```cpp
include "customwidgetv2.h"

CustomWidget::CustomWidget(QWidget *parent) :
CustomWidgetV2::CustomWidgetV2(QWidget *parent) :
QWidget(parent)
{
m_view = new QGraphicsView(this);
m_scene = new QGraphicsScene(this);
m_view->setScene(m_scene);

QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_view);
setLayout(layout);

Expand All @@ -293,7 +293,7 @@ Up to now, we have mostly covered basic data types and how to use widgets and gr
```cpp
m_view = new QListView(this);
m_model = new QStringListModel(this);
view->setModel(m_model);
m_view->setModel(m_model);

QList<QString> cities;
cities << "Munich" << "Paris" << "London";
Expand Down Expand Up @@ -333,7 +333,7 @@ view->setModel(m_model);
m_model->select();
```

For a higher level model operations, Qt provides a sorting file proxy model that allows you sort, filter, and transform models.
For a higher level model operations, Qt provides a sorting filter proxy model that allows you sort, filter, and transform models.

```cpp
QSortFilterProxyModel* proxy = new QSortFilterProxyModel(this);
Expand All @@ -342,7 +342,7 @@ view->setModel(proxy);
view->setSortingEnabled(true);
```

Filtering is done based on the column that is to be filters, and a string as filter argument.
Filtering is done based on the column that is to be filtered, and a string as filter argument.

```cpp
proxy->setFilterKeyColumn(0);
Expand All @@ -354,7 +354,7 @@ The filter proxy model is much more powerful than demonstrated here. For now, it

!!! note

This has been an overview of the different kind of classic applications you can develop with Qt 5. The desktop is moving, and soon the mobile devices will be our desktop of tomorrow. Mobile devices have a different user interface design. They are much more simplistic than desktop applications. They do one thing and they do it with simplicity and focus. Animations are an important part of the mobile experience. A user interface needs to feel alive and fluent. The traditional Qt technologies are not well suited for this market.
This has been an overview of the different kind of classic applications you can develop with Qt 6. The desktop is moving, and soon the mobile devices will be our desktop of tomorrow. Mobile devices have a different user interface design. They are much more simplistic than desktop applications. They do one thing and they do it with simplicity and focus. Animations are an important part of the mobile experience. A user interface needs to feel alive and fluent. The traditional Qt technologies are not well suited for this market.

*Coming next: Qt Quick to the rescue.*

Expand Down