diff --git a/QtScrcpy/devicemanage/devicemanage.cpp b/QtScrcpy/devicemanage/devicemanage.cpp
index decce90..8379911 100644
--- a/QtScrcpy/devicemanage/devicemanage.cpp
+++ b/QtScrcpy/devicemanage/devicemanage.cpp
@@ -2,6 +2,7 @@
 
 #include "devicemanage.h"
 #include "server.h"
+#include "videoform.h"
 
 #define DM_MAX_DEVICES_NUM 16
 
@@ -62,6 +63,21 @@ void DeviceManage::updateScript(QString script)
     }
 }
 
+bool DeviceManage::staysOnTop(const QString &serial)
+{
+    if (!serial.isEmpty() && m_devices.contains(serial)) {
+        auto it = m_devices.find(serial);
+        if (!it->data()) {
+            return false;
+        }
+        if (!it->data()->getVideoForm()) {
+            return false;
+        }
+        it->data()->getVideoForm()->staysOnTop();
+    }
+    return true;
+}
+
 bool DeviceManage::disconnectDevice(const QString &serial)
 {
     bool ret = false;
diff --git a/QtScrcpy/devicemanage/devicemanage.h b/QtScrcpy/devicemanage/devicemanage.h
index 09b9c7e..bfe1f7c 100644
--- a/QtScrcpy/devicemanage/devicemanage.h
+++ b/QtScrcpy/devicemanage/devicemanage.h
@@ -15,6 +15,7 @@ public:
 
     bool connectDevice(Device::DeviceParams params);
     void updateScript(QString script);
+    bool staysOnTop(const QString &serial);
 
     bool disconnectDevice(const QString &serial);
     void disconnectAllDevice();
diff --git a/QtScrcpy/dialog.cpp b/QtScrcpy/dialog.cpp
index d5cf11a..9b74339 100644
--- a/QtScrcpy/dialog.cpp
+++ b/QtScrcpy/dialog.cpp
@@ -166,11 +166,9 @@ void Dialog::on_startServerBtn_clicked()
 
     m_deviceManage.connectDevice(params);
 
-/*
-        if (ui->alwaysTopCheck->isChecked() && m_device->getVideoForm()) {
-            m_device->getVideoForm()->staysOnTop();
-        }         
-    */
+    if (ui->alwaysTopCheck->isChecked()) {
+        m_deviceManage.staysOnTop(params.serial);
+    }
 }
 
 void Dialog::on_stopServerBtn_clicked()