**Course Title:** QML Application Development **Section Title:** QML Basics: Components and Properties **Topic:** Building a simple QML interface using basic components.(Lab topic) **Introduction** In this lab topic, we will build a simple QML interface using basic components. You will learn how to apply the concepts learned in the previous topics to create a user interface. By the end of this lab, you will be able to create a basic QML interface that includes visual elements and layouts. **Objective** * Create a simple QML interface using basic components such as Rectangle, Text, Image, and Button. * Apply anchors and layout managers to position and arrange components. * Use properties and signals to customize the behavior of components. **Lab: Building a Simple QML Interface** Let's build a simple QML interface that displays a logo, a heading, and two buttons. We will use the basic components learned in the previous topics. **Step 1: Create a new QML file** Create a new QML file called `SimpleInterface.qml` and add the following code: ```qml import QtQuick 2.12 import QtQuick.Controls 2.12 Rectangle { width: 400 height: 400 color: "lightgray" // Add components here } ``` **Step 2: Add a logo** Add an Image component to display a logo. You can use any image file (e.g., `logo.png`) and adjust the size as needed. ```qml Image { id: logo source: "logo.png" width: 100 height: 100 anchors.top: parent.top anchors.left: parent.left anchors.margins: 20 } ``` **Step 3: Add a heading** Add a Text component to display a heading. ```qml Text { id: heading text: "Simple QML Interface" font.pixelSize: 24 anchors.top: logo.bottom anchors.left: parent.left anchors.margins: 20 } ``` **Step 4: Add two buttons** Add two Button components with different labels and colors. ```qml Button { id: button1 text: "Button 1" anchors.top: heading.bottom anchors.left: parent.left anchors.margins: 20 } Button { id: button2 text: "Button 2" color: "blue" anchors.top: heading.bottom anchors.left: button1.right anchors.margins: 20 } ``` **Step 5: Apply layout managers** Use a Row layout manager to arrange the two buttons horizontally. ```qml Row { id: row anchors.top: heading.bottom anchors.left: parent.left anchors.margins: 20 spacing: 10 Button { id: button1 text: "Button 1" } Button { id: button2 text: "Button 2" color: "blue" } } ``` **Complete Code** Here is the complete code for the `SimpleInterface.qml` file: ```qml import QtQuick 2.12 import QtQuick.Controls 2.12 Rectangle { width: 400 height: 400 color: "lightgray" Image { id: logo source: "logo.png" width: 100 height: 100 anchors.top: parent.top anchors.left: parent.left anchors.margins: 20 } Text { id: heading text: "Simple QML Interface" font.pixelSize: 24 anchors.top: logo.bottom anchors.left: parent.left anchors.margins: 20 } Row { id: row anchors.top: heading.bottom anchors.left: parent.left anchors.margins: 20 spacing: 10 Button { id: button1 text: "Button 1" } Button { id: button2 text: "Button 2" color: "blue" } } } ``` **Conclusion** In this lab topic, you learned how to build a simple QML interface using basic components such as Rectangle, Text, Image, and Button. You also applied anchors and layout managers to position and arrange components. This exercise should give you a solid foundation for building more complex QML interfaces. **What to Do Next** * Experiment with different components and layouts to build more complex interfaces. * Learn about event handling and signal handling in QML. * Read the official Qt documentation on QML: [https://doc.qt.io/qt-5/qtqml-index.html](https://doc.qt.io/qt-5/qtqml-index.html) **Leave a Comment or Ask for Help** If you have any questions or need help with this lab topic, please leave a comment below.