Handle keyboard in QML

src/qml/main.qml

@@ -4,11 +4,22 @@ import QtQuick.Layouts 1.3
 import Magnum 1.0
 
 ApplicationWindow {
+    id: app
     visible: true
     width: 640
     height: 480
     title: qsTr("My Application")
 
+    Shortcut {
+        sequence: "q"
+        onActivated: app.close()
+    }
+
+    Shortcut {
+        sequence: "l"
+        onActivated: lagging.checked = !lagging.checked
+    }
+
     RowLayout {
         id: root
         anchors.fill: parent
@@ -81,11 +92,19 @@ ApplicationWindow {
                 Layout.preferredWidth: parent.width
 
                 CheckBox {
-                    text: "Lagging"
+                    id: lagging
+                    text: "Lagging (L)"
+                    onCheckStateChanged: {
+                        if (checked)
+                            magnum.lagging = 0.85
+                        else
+                            magnum.lagging = 0
+                    }
                 }
             }
         }
         Magnum {
+            id: magnum
             Layout.fillHeight: true
             Layout.fillWidth: true