In-App purchasing demo | Qt 6.2

- Qt 6.2
- In-App purchasing demo
- Qt 6.2.4 Reference Documentation

# In-App purchasing demo

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     import QtQuick
     import QtQuick.Controls

     Item {
         id: gameView

         function allContained(owned, word)
         {
             for (var i=0; i<word.length; ++i) {
                 if (owned.indexOf(word.charAt(i)) < 0)
                     return false
             }
             return true
         }

         property bool gameOver: applicationData.errorCount > 8
         property bool success: applicationData.word.length > 0 && !gameOver && allContained(applicationData.lettersOwned, applicationData.word)

         property alias globalButtonHeight: letterSelector.keyHeight

         onGameOverChanged: {
             if (gameOver)
                 applicationData.gameOverReveal();
         }

         onSuccessChanged: {
             if (success === true)
                 applicationData.wordsGuessedCorrectly += 1;
         }

         Connections {
             target: applicationData
             function onWordChanged() {
                 applicationData.wordsGiven += 1;
             }
         }

         SimpleButton {
             id: vowelsAvailableText
             height: globalButtonHeight
             width: parent.width * 0.25
             text: "Vowels: " + applicationData.vowelsAvailable
             anchors.left: parent.left
             anchors.verticalCenter: helpButton.verticalCenter
             anchors.margins: topLevel.globalMargin
             onClicked: {
                 pageStack.push("StoreView.qml");
             }
         }

         ScoreItem {
             anchors.margins: topLevel.globalMargin
             anchors.right: helpButton.left
             anchors.verticalCenter: helpButton.verticalCenter
             height: globalButtonHeight
         }

         SimpleButton {
             id: helpButton
             anchors.top: parent.top
             anchors.right: parent.right
             anchors.margins: topLevel.globalMargin
             height: globalButtonHeight
             width: globalButtonHeight
             text: "?"
             onClicked: {
                 pageStack.push(Qt.resolvedUrl("HowToView.qml"))
             }
         }

         Item {
             anchors.top: helpButton.bottom
             anchors.bottom: word.top
             anchors.left: parent.left
             anchors.right: parent.right

             Hangman {
                 game: gameView
                 anchors.centerIn: parent
                 width: Math.min(parent.width, parent.height) * 0.75
                 height: width
             }
         }

         Word {
             id: word
             text: applicationData.word
             anchors.bottom: letterSelector.top
             anchors.bottomMargin: parent.height * 0.05
             anchors.horizontalCenter: parent.horizontalCenter
             width: parent.width * 0.8
             height: parent.height * 0.1
         }

         LetterSelector {
             id: letterSelector
             locked: gameOver || success
             hideVowels: applicationData.vowelsAvailable < 1 && !applicationData.vowelsUnlocked
             anchors.margins: topLevel.globalMargin
             anchors.bottom: guessButton.top
             anchors.left: parent.left
             anchors.right: parent.right
             height: parent.height * 0.23
             onLetterSelected: function(letter) {
                 if (applicationData.isVowel(letter) && !applicationData.vowelsUnlocked) {
                     applicationData.vowelsAvailable -= 1;
                 }
                 applicationData.requestLetter(letter.charAt(0));
             }
         }

         SimpleButton {
             id: revealButton
             anchors.margins: topLevel.globalMargin
             visible: !(gameOver || success)
             anchors.bottom: parent.bottom
             anchors.left: parent.left
             height: globalButtonHeight
             width : letterSelector.keyWidth * 3
             text: "Reveal"
             onClicked: {
                 applicationData.reveal();
             }
         }
         SimpleButton {
             id: guessButton
             anchors.margins: topLevel.globalMargin
             visible: !(gameOver || success)
             anchors.bottom: parent.bottom
             anchors.left: revealButton.right
             anchors.right: parent.right
             height: globalButtonHeight
             text: "Guess"
             onClicked: {
                 pageStack.push(Qt.resolvedUrl("GuessWordView.qml"));
             }
         }
         SimpleButton {
             id: resetButton
             anchors.margins: topLevel.globalMargin
             visible: gameOver || success
             anchors.bottom: parent.bottom
             anchors.left: parent.left
             anchors.right: parent.right
             height: globalButtonHeight
             text: "Play Again?"
             onClicked: {
                 letterSelector.reset();
                 applicationData.reset();
             }
         }

         Text {
             id: gameOverText
             visible: gameOver
             anchors.fill: letterSelector
             text: "Game Over"
             fontSizeMode: Text.Fit
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
             minimumPointSize: 8
             font.pointSize: 64
             color: "white"
             font.family: "Helvetica"
             font.weight: Font.Light
         }

         Text {
             id: successText
             visible: success
             anchors.fill: letterSelector
             text: "Success"
             fontSizeMode: Text.Fit
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
             minimumPointSize: 8
             font.pointSize: 64
             color: "white"
             font.family: "Helvetica"
             font.weight: Font.Light
         }
     }