diff --git a/QtScrcpy/devicemanage/devicemanage.cpp b/QtScrcpy/devicemanage/devicemanage.cpp
index ec3f170..790b935 100644
--- a/QtScrcpy/devicemanage/devicemanage.cpp
+++ b/QtScrcpy/devicemanage/devicemanage.cpp
@@ -196,11 +196,13 @@ void DeviceManage::onDeviceConnected(bool success, const QString &serial, const
     if (!success) {
         removeDevice(serial);
     }
+    emit deviceConnected(success, serial, deviceName, size);
 }
 
 void DeviceManage::onDeviceDisconnected(QString serial)
 {
     removeDevice(serial);
+    emit deviceDisconnected(serial);
 }
 
 void DeviceManage::onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState)
diff --git a/QtScrcpy/devicemanage/devicemanage.h b/QtScrcpy/devicemanage/devicemanage.h
index a26252a..652fa5b 100644
--- a/QtScrcpy/devicemanage/devicemanage.h
+++ b/QtScrcpy/devicemanage/devicemanage.h
@@ -14,12 +14,16 @@ public:
     virtual ~DeviceManage();
 
     bool connectDevice(Device::DeviceParams params);
+    bool disconnectDevice(const QString &serial);
+    void disconnectAllDevice();
+
     void updateScript(QString script);
     bool staysOnTop(const QString &serial);
     void showFPS(const QString &serial, bool show);
 
-    bool disconnectDevice(const QString &serial);
-    void disconnectAllDevice();
+signals:
+    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
+    void deviceDisconnected(QString serial);
 
 protected:
     void setGroupControlSignals(Device *host, Device *client, bool install);
diff --git a/QtScrcpy/ui/dialog.cpp b/QtScrcpy/ui/dialog.cpp
index f3eb15c..b1d36e9 100644
--- a/QtScrcpy/ui/dialog.cpp
+++ b/QtScrcpy/ui/dialog.cpp
@@ -94,6 +94,9 @@ Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog)
         qApp->quit();
     });
     connect(m_hideIcon, &QSystemTrayIcon::activated, this, &Dialog::slotActivated);
+
+    connect(&m_deviceManage, &DeviceManage::deviceConnected, this, &Dialog::onDeviceConnected);
+    connect(&m_deviceManage, &DeviceManage::deviceDisconnected, this, &Dialog::onDeviceDisconnected);
 }
 
 Dialog::~Dialog()
@@ -418,6 +421,16 @@ void Dialog::getIPbyIp()
     m_adb.execute(ui->serialBox->currentText().trimmed(), adbArgs);
 }
 
+void Dialog::onDeviceConnected(bool success, const QString &serial, const QString &deviceName, const QSize &size)
+{
+
+}
+
+void Dialog::onDeviceDisconnected(QString serial)
+{
+
+}
+
 void Dialog::on_wirelessDisConnectBtn_clicked()
 {
     if (checkAdbRun()) {
diff --git a/QtScrcpy/ui/dialog.h b/QtScrcpy/ui/dialog.h
index 4ee39f2..9412f69 100644
--- a/QtScrcpy/ui/dialog.h
+++ b/QtScrcpy/ui/dialog.h
@@ -31,6 +31,9 @@ public:
     void getIPbyIp();
 
 private slots:
+    void onDeviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
+    void onDeviceDisconnected(QString serial);
+
     void on_updateDevice_clicked();
     void on_startServerBtn_clicked();
     void on_stopServerBtn_clicked();