Qt5.15.2 compatible

example/qml-Qt6/window/SingleInstanceWindow.qml

@@ -0,0 +1,35 @@
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Layouts
+import FluentUI
+import "qrc:///example/qml/component"
+
+CustomWindow {
+
+    id:window
+    title:"SingleInstance"
+    width: 500
+    height: 600
+    fixSize: true
+    launchMode: FluWindowType.SingleInstance
+
+    FluTextBox{
+        anchors{
+            top:parent.top
+            topMargin:60
+            horizontalCenter: parent.horizontalCenter
+        }
+    }
+
+    FluText{
+        wrapMode: Text.WrapAnywhere
+        anchors{
+            left: parent.left
+            right: parent.right
+            leftMargin: 20
+            rightMargin: 20
+            verticalCenter: parent.verticalCenter
+        }
+        text:"我是一个SingleInstance模式的窗口，如果我存在，我会销毁之前的窗口，并创建一个新窗口"
+    }
+}