diff --git a/examples/launchApp/main.cpp b/examples/launchApp/main.cpp
index b59f56b..64ab0eb 100644
--- a/examples/launchApp/main.cpp
+++ b/examples/launchApp/main.cpp
@@ -26,7 +26,7 @@ public:
                          JobManager.interface(),
                          u8"JobNew",
                          this,
-                         SLOT(onJobNew(QDBusObjectPath, QDBusObjectPath)))) {
+                         SLOT(jobNewForward(QDBusObjectPath, QDBusObjectPath)))) {
             qFatal() << "connect JobNew failed.";
         }
 
@@ -35,35 +35,63 @@ public:
                          JobManager.interface(),
                          u8"JobRemoved",
                          this,
-                         SLOT(onJobRemoved(QDBusObjectPath, QString, QVariantList)))) {
+                         SLOT(jobRemovedForward(QDBusObjectPath, QString, QVariantList)))) {
             qFatal() << "connect JobNew failed.";
         }
+
+        connect(this, &Demo::applicationLaunched, [](QList<QString> apps) {
+            qInfo() << "application launched:";
+            for (const auto &app : apps) {
+                qInfo() << app;
+            };
+        });
+    }
+
+    void launchApp(const QString &appId)
+    {
+        connect(this, &Demo::amJobRemoved, [this](QDBusObjectPath job, QString status, QVariantList result) {
+            if (myJob == job) {
+                qInfo() << "my job" << status << result;
+            }
+            QList<QString> apps;
+            for (const auto &app : result) {
+                apps.append(app.value<QString>());
+            }
+            emit applicationLaunched(apps);
+        });
+
+        auto reply =
+            ApplicationManager.callWithArgumentList(QDBus::Block, "Launch", {appId, QString{""}, QStringList{}, QVariantMap{}});
+
+        if (reply.type() == QDBusMessage::ReplyMessage) {
+            myJob = reply.arguments().first().value<QDBusObjectPath>();
+        }
     }
 
-    // TODO: should be QList<QDBusObjectPath>
-    void launchApp(const QString &appId)
-    {
-        auto msg =
-            ApplicationManager.callWithArgumentList(QDBus::Block, "Launch", {appId, QString{""}, QStringList{}, QVariantMap{}});
-        qInfo() << "reply message:" << msg;
-    }
-
 public Q_SLOTS:
-    void onJobNew(QDBusObjectPath job, QDBusObjectPath source)
+    void jobNewForward(QDBusObjectPath job, QDBusObjectPath source)
     {
         qInfo() << "Job New ["
                 << "Job Path:" << job.path() << source.path() << "add this job].";
+        emit amJobNew(job, source);
     }
 
-    void onJobRemoved(QDBusObjectPath job, QString status, QVariantList result)
+    void jobRemovedForward(QDBusObjectPath job, QString status, QVariantList result)
     {
         qInfo() << "Job Removed ["
                 << "Job Path:" << job.path() << "Job Status:" << status << "result:" << result;
+        emit amJobRemoved(job, status, result);
     }
 
+Q_SIGNALS:
+    void amJobNew(QDBusObjectPath job, QDBusObjectPath source);
+    void amJobRemoved(QDBusObjectPath job, QString status, QVariantList result);
+    void applicationLaunched(QList<QString> apps);
+
 private:
     QDBusInterface ApplicationManager;
     QDBusInterface JobManager;
+    QDBusObjectPath myJob;
 };
 
 int main(int argc, char *argv[])