In-App purchasing demo

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 import QtQuick
 import QtQuick.Controls
 import QtQuick.Layouts
 import Hangman

 Item {
     PageHeader {
         id: header
         title: "Hangman Store"
     }

     Column {
         anchors.top: header.bottom
         anchors.bottom: restoreButton.top
         anchors.margins: topLevel.globalMargin
         anchors.right: parent.right
         anchors.left: parent.left
         spacing: topLevel.globalMargin
         // ![2]
         StoreItem {
             product: product100Vowels
             width: parent.width
         }

         StoreItem {
             product: productUnlockVowels
             width: parent.width
         }
         // ![2]
     }

     SimpleButton {
         id: restoreButton
         anchors.bottom: parent.bottom
         anchors.margins: topLevel.globalMargin
         anchors.horizontalCenter: parent.horizontalCenter
         height: topLevel.buttonHeight
         width: parent.width * .5
         text: "Restore Purchases"
         onClicked: {
             console.log("restoring...");
             iapStore.restorePurchases();
         }
     }

     // ![0]
     Product {
         id: product100Vowels
         store: iapStore
         type: Product.Consumable
         identifier: "qt.io.demo.hangman.100vowels"

         onPurchaseSucceeded: {
             console.log(identifier + " purchase successful");
             //Add 100 Vowels
             applicationData.vowelsAvailable += 100;
             transaction.finalize();
             pageStack.pop();
         }

         onPurchaseFailed: {
             console.log(identifier + " purchase failed");
             console.log("reason: "
                         + transaction.failureReason === Transaction.CanceledByUser ? "Canceled" : transaction.errorString);
             transaction.finalize();
         }
     }
     // ![0]
     // ![1]
     Product {
         id: productUnlockVowels
         type: Product.Unlockable
         store: iapStore
         identifier: "qt.io.demo.hangman.unlockvowels"

         onPurchaseSucceeded: {
             console.log(identifier + " purchase successful");
             applicationData.vowelsUnlocked = true;
             transaction.finalize();
             pageStack.pop();
         }

         onPurchaseFailed: {
             console.log(identifier + " purchase failed");
             console.log("reason: "
                         + transaction.failureReason === Transaction.CanceledByUser ? "Canceled" : transaction.errorString);
             transaction.finalize();
         }

         onPurchaseRestored: {
             console.log(identifier + " purchase restored");
             applicationData.vowelsUnlocked = true;
             console.log("timestamp: " + transaction.timestamp);
             transaction.finalize();
             pageStack.pop();
         }
     }
     // ![1]

 }