diff --git a/example/example.pro b/example/example.pro
index 6b026c6..6d0faed 100644
--- a/example/example.pro
+++ b/example/example.pro
@@ -3,6 +3,7 @@ CONFIG += c++17
 DEFINES += QT_DEPRECATED_WARNINGS QT_NO_WARNING_OUTPUT
 
 HEADERS += \
+    stdafx.h \
     ChatController.h \
     AppInfo.h
 
diff --git a/example/page/AboutPage.qml b/example/page/AboutPage.qml
index 7616c43..f3b0a55 100644
--- a/example/page/AboutPage.qml
+++ b/example/page/AboutPage.qml
@@ -13,6 +13,7 @@ FluWindow {
     minimumHeight: 600
     maximumWidth: 500
     maximumHeight: 600
+    launchMode: FluWindow.SingleTask
 
     title:"关于"
 
diff --git a/src/FluApp.cpp b/src/FluApp.cpp
index 47d91ab..53a6a9a 100644
--- a/src/FluApp.cpp
+++ b/src/FluApp.cpp
@@ -44,8 +44,8 @@ void FluApp::init(QQuickWindow *window){
 void FluApp::run(){
 #ifdef Q_OS_WIN
     if(!isCompositionEnabled()){
-            FluTheme::getInstance()->frameless(false);
-        }
+        FluTheme::getInstance()->frameless(false);
+    }
 #endif
     navigate(initialRoute());
 }
@@ -58,11 +58,33 @@ void FluApp::navigate(const QString& route,const QJsonObject& argument,FluRegist
     QQmlEngine *engine = qmlEngine(appWindow);
     QQmlComponent component(engine, routes().value(route).toString());
     QVariantMap properties;
+    properties.insert("route",route);
     if(fluRegister){
         properties.insert("pageRegister",QVariant::fromValue(fluRegister));
     }
     properties.insert("argument",argument);
     QQuickWindow *view = qobject_cast<QQuickWindow*>(component.createWithInitialProperties(properties));
+
+    int launchMode = view->property("launchMode").toInt();
+    if(launchMode==1){
+        for (auto& pair : wnds) {
+            QString r =  pair->property("route").toString();
+            if(r == route){
+                pair->requestActivate();
+                delete view;
+                return;
+            }
+        }
+    }else if(launchMode==2){
+        for (auto& pair : wnds) {
+            QString r =  pair->property("route").toString();
+            if(r == route){
+                pair->close();
+                break;
+            }
+        }
+    }
+
     if(FluTheme::getInstance()->frameless()){
         view->setFlag(Qt::FramelessWindowHint,true);
     }
diff --git a/src/controls/FluWindow.qml b/src/controls/FluWindow.qml
index fb60469..c1df91b 100644
--- a/src/controls/FluWindow.qml
+++ b/src/controls/FluWindow.qml
@@ -6,11 +6,21 @@ import FluentUI
 
 ApplicationWindow {
 
-    id:window
+
+    enum LaunchMode {
+        Standard,
+        SingleTask,
+        SingleInstance
+    }
+
     default property alias content: container.data
+    property int launchMode: FluWindow.Standard
+    property string route
     property var argument:({})
     property var pageRegister
     signal initArgument(var argument)
+
+    id:window
     background: Rectangle{
         color: {
             if(active){