Book Image

Mastering Qt 5

By : Guillaume Lazar, Robin Penea
Book Image

Mastering Qt 5

By: Guillaume Lazar, Robin Penea

Overview of this book

Qt 5.7 is an application development framework that provides a great user experience and develops full-capability applications with Qt Widgets, QML, and even Qt 3D. This book will address challenges in successfully developing cross-platform applications with the Qt framework. Cross-platform development needs a well-organized project. Using this book, you will have a better understanding of the Qt framework and the tools to resolve serious issues such as linking, debugging, and multithreading. Your journey will start with the new Qt 5 features. Then you will explore different platforms and learn to tame them. Every chapter along the way is a logical step that you must take to master Qt. The journey will end in an application that has been tested and is ready to be shipped.
Table of Contents (20 chapters)
Mastering Qt 5
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface

Varying the HUD with QML states


We will now create a "Game Over" HUD, displayed when you lose the game. Create a new file GameOverItem.qml:

Item { 
    id: root 
    anchors.fill: parent 
 
    onVisibleChanged: { 
        scoreLabel.text = "Your score: " + score 
    } 
 
    Rectangle { 
        anchors.fill: parent 
        color: "black" 
        opacity: 0.75 
    } 
 
    Label { 
        id: gameOverLabel 
        anchors.centerIn: parent 
        color: "white" 
        font.pointSize: 50 
        text: "Game Over" 
    } 
 
    Label { 
        id: scoreLabel 
        width: parent.width 
        anchors.top: gameOverLabel.bottom 
        horizontalAlignment: "AlignHCenter" 
        color: "white" 
        font.pointSize: 20 
    } 
 
    Label { 
        width: parent.width 
        anchors.bottom: parent.bottom 
        anchors.bottomMargin: 50 
        horizontalAlignment: "AlignHCenter" 
        color: "white" 
        font.pointSize: 30 
        text:"Press R to restart the...