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Update image-viewer.md #214

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2 changes: 1 addition & 1 deletion docs/ch06-controls/image-viewer.md
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Expand Up @@ -503,7 +503,7 @@ In addition to the QML changes, we also need to alter the project file of the im
QT += quick quickcontrols2 widgets
```

And we need to update `main.qml` to instantiate a `QApplication` object instead of a `QGuiApplication` object. This is because the `QGuiApplication` class contains the minimal environment needed for a graphical application, while `QApplication` extends `QGuiApplication` with features needed to support `QtWidgets`.
And we need to update `main.cpp` to instantiate a `QApplication` object instead of a `QGuiApplication` object. This is because the `QGuiApplication` class contains the minimal environment needed for a graphical application, while `QApplication` extends `QGuiApplication` with features needed to support `QtWidgets`.

```cpp
include <QApplication>
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