diff --git a/QtScrcpy/device/controller/controller.cpp b/QtScrcpy/device/controller/controller.cpp
index 014dc3e..8800d86 100644
--- a/QtScrcpy/device/controller/controller.cpp
+++ b/QtScrcpy/device/controller/controller.cpp
@@ -67,7 +67,7 @@ bool Controller::isCurrentCustomKeymap()
     return m_inputConvert->isCurrentCustomKeymap();
 }
 
-void Controller::onPostBackOrScreenOn(bool down)
+void Controller::postBackOrScreenOn(bool down)
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_BACK_OR_SCREEN_ON);
     controlMsg->setBackOrScreenOnData(down);
@@ -77,52 +77,52 @@ void Controller::onPostBackOrScreenOn(bool down)
     postControlMsg(controlMsg);
 }
 
-void Controller::onPostGoHome()
+void Controller::postGoHome()
 {
     postKeyCodeClick(AKEYCODE_HOME);
 }
 
-void Controller::onPostGoMenu()
+void Controller::postGoMenu()
 {
     postKeyCodeClick(AKEYCODE_MENU);
 }
 
-void Controller::onPostGoBack()
+void Controller::postGoBack()
 {
     postKeyCodeClick(AKEYCODE_BACK);
 }
 
-void Controller::onPostAppSwitch()
+void Controller::postAppSwitch()
 {
     postKeyCodeClick(AKEYCODE_APP_SWITCH);
 }
 
-void Controller::onPostPower()
+void Controller::postPower()
 {
     postKeyCodeClick(AKEYCODE_POWER);
 }
 
-void Controller::onPostVolumeUp()
+void Controller::postVolumeUp()
 {
     postKeyCodeClick(AKEYCODE_VOLUME_UP);
 }
 
-void Controller::onPostVolumeDown()
+void Controller::postVolumeDown()
 {
     postKeyCodeClick(AKEYCODE_VOLUME_DOWN);
 }
 
-void Controller::onCopy()
+void Controller::copy()
 {
     postKeyCodeClick(AKEYCODE_COPY);
 }
 
-void Controller::onCut()
+void Controller::cut()
 {
     postKeyCodeClick(AKEYCODE_CUT);
 }
 
-void Controller::onExpandNotificationPanel()
+void Controller::expandNotificationPanel()
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_EXPAND_NOTIFICATION_PANEL);
     if (!controlMsg) {
@@ -131,7 +131,7 @@ void Controller::onExpandNotificationPanel()
     postControlMsg(controlMsg);
 }
 
-void Controller::onCollapsePanel()
+void Controller::collapsePanel()
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_COLLAPSE_PANELS);
     if (!controlMsg) {
@@ -140,7 +140,7 @@ void Controller::onCollapsePanel()
     postControlMsg(controlMsg);
 }
 
-void Controller::onRequestDeviceClipboard()
+void Controller::requestDeviceClipboard()
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_GET_CLIPBOARD);
     if (!controlMsg) {
@@ -149,7 +149,7 @@ void Controller::onRequestDeviceClipboard()
     postControlMsg(controlMsg);
 }
 
-void Controller::onGetDeviceClipboard(bool cut)
+void Controller::getDeviceClipboard(bool cut)
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_GET_CLIPBOARD);
     if (!controlMsg) {
@@ -160,7 +160,7 @@ void Controller::onGetDeviceClipboard(bool cut)
     postControlMsg(controlMsg);
 }
 
-void Controller::onSetDeviceClipboard(bool pause)
+void Controller::setDeviceClipboard(bool pause)
 {
     QClipboard *board = QApplication::clipboard();
     QString text = board->text();
@@ -172,14 +172,14 @@ void Controller::onSetDeviceClipboard(bool pause)
     postControlMsg(controlMsg);
 }
 
-void Controller::onClipboardPaste()
+void Controller::clipboardPaste()
 {
     QClipboard *board = QApplication::clipboard();
     QString text = board->text();
-    onPostTextInput(text);
+    postTextInput(text);
 }
 
-void Controller::onPostTextInput(QString &text)
+void Controller::postTextInput(QString &text)
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_INJECT_TEXT);
     if (!controlMsg) {
@@ -189,7 +189,7 @@ void Controller::onPostTextInput(QString &text)
     postControlMsg(controlMsg);
 }
 
-void Controller::onSetScreenPowerMode(ControlMsg::ScreenPowerMode mode)
+void Controller::setScreenPowerMode(ControlMsg::ScreenPowerMode mode)
 {
     ControlMsg *controlMsg = new ControlMsg(ControlMsg::CMT_SET_SCREEN_POWER_MODE);
     if (!controlMsg) {
@@ -199,21 +199,21 @@ void Controller::onSetScreenPowerMode(ControlMsg::ScreenPowerMode mode)
     postControlMsg(controlMsg);
 }
 
-void Controller::onMouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
+void Controller::mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
 {
     if (m_inputConvert) {
         m_inputConvert->mouseEvent(from, frameSize, showSize);
     }
 }
 
-void Controller::onWheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
+void Controller::wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
 {
     if (m_inputConvert) {
         m_inputConvert->wheelEvent(from, frameSize, showSize);
     }
 }
 
-void Controller::onKeyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize)
+void Controller::keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize)
 {
     if (m_inputConvert) {
         m_inputConvert->keyEvent(from, frameSize, showSize);
diff --git a/QtScrcpy/device/controller/controller.h b/QtScrcpy/device/controller/controller.h
index 1b50f73..3de3b6b 100644
--- a/QtScrcpy/device/controller/controller.h
+++ b/QtScrcpy/device/controller/controller.h
@@ -25,33 +25,32 @@ public:
     void updateScript(QString gameScript = "");
     bool isCurrentCustomKeymap();
 
-public slots:
-    void onPostGoBack();
-    void onPostGoHome();
-    void onPostGoMenu();
-    void onPostAppSwitch();
-    void onPostPower();
-    void onPostVolumeUp();
-    void onPostVolumeDown();
-    void onCopy();
-    void onCut();
-    void onExpandNotificationPanel();
-    void onCollapsePanel();
-    void onSetScreenPowerMode(ControlMsg::ScreenPowerMode mode);
+    void postGoBack();
+    void postGoHome();
+    void postGoMenu();
+    void postAppSwitch();
+    void postPower();
+    void postVolumeUp();
+    void postVolumeDown();
+    void copy();
+    void cut();
+    void expandNotificationPanel();
+    void collapsePanel();
+    void setScreenPowerMode(ControlMsg::ScreenPowerMode mode);
 
     // for input convert
-    void onMouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize);
-    void onWheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize);
-    void onKeyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize);
+    void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize);
+    void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize);
+    void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize);
 
     // turn the screen on if it was off, press BACK otherwise
     // If the screen is off, it is turned on only on down
-    void onPostBackOrScreenOn(bool down);
-    void onRequestDeviceClipboard();
-    void onGetDeviceClipboard(bool cut = false);
-    void onSetDeviceClipboard(bool pause = true);
-    void onClipboardPaste();
-    void onPostTextInput(QString &text);
+    void postBackOrScreenOn(bool down);
+    void requestDeviceClipboard();
+    void getDeviceClipboard(bool cut = false);
+    void setDeviceClipboard(bool pause = true);
+    void clipboardPaste();
+    void postTextInput(QString &text);
 
 signals:
     void grabCursor(bool grab);
diff --git a/QtScrcpy/device/device.cpp b/QtScrcpy/device/device.cpp
index 664e295..b64ba92 100644
--- a/QtScrcpy/device/device.cpp
+++ b/QtScrcpy/device/device.cpp
@@ -91,7 +91,7 @@ void Device::updateScript(QString script)
     }
 }
 
-void Device::onScreenshot()
+void Device::screenshot()
 {
     if (!m_decoder) {
         return;
@@ -103,7 +103,7 @@ void Device::onScreenshot()
     });
 }
 
-void Device::onShowTouch(bool show)
+void Device::showTouch(bool show)
 {
     AdbProcess *adb = new AdbProcess();
     if (!adb) {
@@ -121,18 +121,11 @@ void Device::onShowTouch(bool show)
 
 void Device::initSignals()
 {
-    connect(this, &Device::screenshot, this, &Device::onScreenshot);
-    connect(this, &Device::showTouch, this, &Device::onShowTouch);
-    connect(this, &Device::setControlState, this, &Device::onSetControlState);
-    connect(this, &Device::grabCursor, this, &Device::onGrabCursor);
-
     if (m_controller) {
         connect(m_controller, &Controller::grabCursor, this, &Device::grabCursor);
     }
     if (m_controller) {
-        connect(this, &Device::postGoBack, m_controller, &Controller::onPostGoBack);
-        connect(this, &Device::postGoHome, m_controller, &Controller::onPostGoHome);
-        connect(this, &Device::postGoMenu, m_controller, &Controller::onPostGoMenu);
+        /*
         connect(this, &Device::postAppSwitch, m_controller, &Controller::onPostAppSwitch);
         connect(this, &Device::postPower, m_controller, &Controller::onPostPower);
         connect(this, &Device::postVolumeUp, m_controller, &Controller::onPostVolumeUp);
@@ -150,15 +143,9 @@ void Device::initSignals()
         connect(this, &Device::setDeviceClipboard, m_controller, &Controller::onSetDeviceClipboard);
         connect(this, &Device::clipboardPaste, m_controller, &Controller::onClipboardPaste);
         connect(this, &Device::postTextInput, m_controller, &Controller::onPostTextInput);
-    }
-    if (m_videoForm) {
-        connect(this, &Device::switchFullScreen, m_videoForm, &VideoForm::onSwitchFullScreen);
+        */
     }
     if (m_fileHandler) {
-        connect(this, &Device::pushFileRequest, this, [this](const QString &file, const QString &devicePath) {
-            m_fileHandler->onPushFileRequest(getSerial(), file, devicePath);
-        });
-        connect(this, &Device::installApkRequest, this, [this](const QString &apkFile) { m_fileHandler->onInstallApkRequest(getSerial(), apkFile); });
         connect(m_fileHandler, &FileHandler::fileHandlerResult, this, [this](FileHandler::FILE_HANDLER_RESULT processResult, bool isApk) {
             QString tipsType = "";
             if (isApk) {
@@ -177,9 +164,6 @@ void Device::initSignals()
                 tips = tr("%1 failed").arg(tipsType);
             }
             qInfo() << tips;
-            if (m_controlState == GCS_CLIENT) {
-                return;
-            }
         });
     }
 
@@ -254,7 +238,7 @@ void Device::initSignals()
 
                 // 显示界面时才自动息屏（m_params.display）
                 if (m_params.closeScreen && m_params.display && m_controller) {
-                    emit m_controller->onSetScreenPowerMode(ControlMsg::SPM_OFF);
+                    m_controller->setScreenPowerMode(ControlMsg::SPM_OFF);
                 }
             } else {
                 m_server->stop();
@@ -357,34 +341,191 @@ void Device::disconnectDevice()
     emit deviceDisconnected(m_params.serial);
 }
 
-void Device::onSetControlState(Device *device, Device::GroupControlState state)
+void Device::postGoBack()
 {
-    Q_UNUSED(device)
-    if (m_controlState == state) {
+    if (!m_controller) {
         return;
     }
-    GroupControlState oldState = m_controlState;
-    m_controlState = state;
-    emit controlStateChange(this, oldState, m_controlState);
+    m_controller->postGoBack();
 }
 
-void Device::onGrabCursor(bool grab)
+void Device::postGoHome()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postGoHome();
+}
+
+void Device::postGoMenu()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postGoMenu();
+}
+
+void Device::postAppSwitch()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postAppSwitch();
+}
+
+void Device::postPower()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postPower();
+}
+
+void Device::postVolumeUp()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postVolumeUp();
+}
+
+void Device::postVolumeDown()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postVolumeDown();
+}
+
+void Device::postCopy()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->copy();
+}
+
+void Device::postCut()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->cut();
+}
+
+void Device::setScreenPowerMode(ControlMsg::ScreenPowerMode mode)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->setScreenPowerMode(mode);
+}
+
+void Device::expandNotificationPanel()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->expandNotificationPanel();
+}
+
+void Device::collapsePanel()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->collapsePanel();
+}
+
+void Device::postBackOrScreenOn(bool down)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postBackOrScreenOn(down);
+}
+
+void Device::postTextInput(QString &text)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->postTextInput(text);
+}
+
+void Device::requestDeviceClipboard()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->requestDeviceClipboard();
+}
+
+void Device::setDeviceClipboard(bool pause)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->setDeviceClipboard(pause);
+}
+
+void Device::clipboardPaste()
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->clipboardPaste();
+}
+
+void Device::pushFileRequest(const QString &file, const QString &devicePath)
+{
+    if (!m_fileHandler) {
+        return;
+    }
+    m_fileHandler->onPushFileRequest(getSerial(), file, devicePath);
+}
+
+void Device::installApkRequest(const QString &apkFile)
+{
+    if (!m_fileHandler) {
+        return;
+    }
+    m_fileHandler->onInstallApkRequest(getSerial(), apkFile);
+}
+
+void Device::mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->mouseEvent(from, frameSize, showSize);
+}
+
+void Device::wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->wheelEvent(from, frameSize, showSize);
+}
+
+void Device::keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize)
+{
+    if (!m_controller) {
+        return;
+    }
+    m_controller->keyEvent(from, frameSize, showSize);
+}
+
+void Device::grabCursor(bool grab)
 {
     if (!m_videoForm) {
         return;
     }
-    if (m_controlState == GCS_CLIENT) {
-        return;
-    }
     QRect rc = m_videoForm->getGrabCursorRect();
     MouseTap::getInstance()->enableMouseEventTap(rc, grab);
 }
 
-Device::GroupControlState Device::controlState()
-{
-    return m_controlState;
-}
-
 bool Device::isCurrentCustomKeymap()
 {
     if (!m_controller) {
diff --git a/QtScrcpy/device/device.h b/QtScrcpy/device/device.h
index 17dc81f..0cd7547 100644
--- a/QtScrcpy/device/device.h
+++ b/QtScrcpy/device/device.h
@@ -43,34 +43,11 @@ public:
         bool stayAwake = false;           // 是否保持唤醒
         bool framelessWindow = false;     // 是否无边框窗口
     };
-    enum GroupControlState
-    {
-        GCS_FREE = 0,
-        GCS_HOST,
-        GCS_CLIENT,
-    };
     explicit Device(DeviceParams params, QObject *parent = nullptr);
     virtual ~Device();
 
     bool connectDevice();
     void disconnectDevice();
-
-    VideoForm *getVideoForm();
-    Server *getServer();
-    const QString &getSerial();
-    const QSize frameSize();
-
-    void updateScript(QString script);
-    Device::GroupControlState controlState();
-
-    bool isCurrentCustomKeymap();
-
-signals:
-    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
-    void deviceDisconnected(QString serial);
-
-    // tool bar
-    void switchFullScreen();
     void postGoBack();
     void postGoHome();
     void postGoMenu();
@@ -95,21 +72,23 @@ signals:
     void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize);
     void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize);
     void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize);
+    
 
-    // self connect signal and slots
     void screenshot();
     void showTouch(bool show);
-    void setControlState(Device *device, Device::GroupControlState state);
     void grabCursor(bool grab);
 
-    // for notify
-    void controlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState);
+    VideoForm *getVideoForm();
+    Server *getServer();
+    const QString &getSerial();
+    const QSize frameSize();
 
-public slots:
-    void onScreenshot();
-    void onShowTouch(bool show);
-    void onSetControlState(Device *device, Device::GroupControlState state);
-    void onGrabCursor(bool grab);
+    void updateScript(QString script);
+    bool isCurrentCustomKeymap();
+
+signals:
+    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
+    void deviceDisconnected(QString serial);
 
 private:
     void initSignals();
@@ -129,8 +108,6 @@ private:
 
     QElapsedTimer m_startTimeCount;
     DeviceParams m_params;
-
-    GroupControlState m_controlState = GCS_FREE;
 };
 
 #endif // DEVICE_H
diff --git a/QtScrcpy/devicemanage/devicemanage.cpp b/QtScrcpy/devicemanage/devicemanage.cpp
index 790b935..5e53297 100644
--- a/QtScrcpy/devicemanage/devicemanage.cpp
+++ b/QtScrcpy/devicemanage/devicemanage.cpp
@@ -42,7 +42,6 @@ bool DeviceManage::connectDevice(Device::DeviceParams params)
     Device *device = new Device(params);
     connect(device, &Device::deviceConnected, this, &DeviceManage::onDeviceConnected);
     connect(device, &Device::deviceDisconnected, this, &DeviceManage::onDeviceDisconnected);
-    connect(device, &Device::controlStateChange, this, &DeviceManage::onControlStateChange);
     if (!device->connectDevice()) {
         delete device;
         return false;
@@ -120,77 +119,6 @@ void DeviceManage::disconnectAllDevice()
     }
 }
 
-void DeviceManage::setGroupControlSignals(Device *host, Device *client, bool install)
-{
-    if (!host || !client) {
-        return;
-    }
-    if (install) {
-        connect(host, &Device::postGoBack, client, &Device::postGoBack);
-        connect(host, &Device::postGoHome, client, &Device::postGoHome);
-        connect(host, &Device::postGoMenu, client, &Device::postGoMenu);
-        connect(host, &Device::postAppSwitch, client, &Device::postAppSwitch);
-        connect(host, &Device::postPower, client, &Device::postPower);
-        connect(host, &Device::postVolumeUp, client, &Device::postVolumeUp);
-        connect(host, &Device::postVolumeDown, client, &Device::postVolumeDown);
-        connect(host, &Device::setScreenPowerMode, client, &Device::setScreenPowerMode);
-        connect(host, &Device::expandNotificationPanel, client, &Device::expandNotificationPanel);
-        connect(host, &Device::collapsePanel, client, &Device::collapsePanel);
-        connect(host, &Device::postBackOrScreenOn, client, &Device::postBackOrScreenOn);
-        connect(host, &Device::postTextInput, client, &Device::postTextInput);
-        connect(host, &Device::setDeviceClipboard, client, &Device::setDeviceClipboard);
-        connect(host, &Device::clipboardPaste, client, &Device::clipboardPaste);
-        connect(host, &Device::pushFileRequest, client, &Device::pushFileRequest);
-        connect(host, &Device::installApkRequest, client, &Device::installApkRequest);
-        connect(host, &Device::screenshot, client, &Device::screenshot);
-        connect(host, &Device::showTouch, client, &Device::showTouch);
-    } else {
-        disconnect(host, &Device::postGoBack, client, &Device::postGoBack);
-        disconnect(host, &Device::postGoHome, client, &Device::postGoHome);
-        disconnect(host, &Device::postGoMenu, client, &Device::postGoMenu);
-        disconnect(host, &Device::postAppSwitch, client, &Device::postAppSwitch);
-        disconnect(host, &Device::postPower, client, &Device::postPower);
-        disconnect(host, &Device::postVolumeUp, client, &Device::postVolumeUp);
-        disconnect(host, &Device::postVolumeDown, client, &Device::postVolumeDown);
-        disconnect(host, &Device::setScreenPowerMode, client, &Device::setScreenPowerMode);
-        disconnect(host, &Device::expandNotificationPanel, client, &Device::expandNotificationPanel);
-        disconnect(host, &Device::collapsePanel, client, &Device::collapsePanel);
-        disconnect(host, &Device::postBackOrScreenOn, client, &Device::postBackOrScreenOn);
-        disconnect(host, &Device::postTextInput, client, &Device::postTextInput);
-        disconnect(host, &Device::setDeviceClipboard, client, &Device::setDeviceClipboard);
-        disconnect(host, &Device::clipboardPaste, client, &Device::clipboardPaste);
-        disconnect(host, &Device::pushFileRequest, client, &Device::pushFileRequest);
-        disconnect(host, &Device::installApkRequest, client, &Device::installApkRequest);
-        disconnect(host, &Device::screenshot, client, &Device::screenshot);
-        disconnect(host, &Device::showTouch, client, &Device::showTouch);
-    }
-}
-
-void DeviceManage::setGroupControlHost(Device *host, bool install)
-{
-    QMapIterator<QString, QPointer<Device>> i(m_devices);
-    while (i.hasNext()) {
-        i.next();
-        if (!i.value()) {
-            continue;
-        }
-        if (i.value() == host) {
-            continue;
-        }
-        if (install) {
-            if (host) {
-                setGroupControlSignals(host, i.value(), true);
-            }
-            emit i.value()->setControlState(i.value(), Device::GroupControlState::GCS_CLIENT);
-        } else {
-            if (host) {
-                setGroupControlSignals(host, i.value(), false);
-            }
-            emit i.value()->setControlState(i.value(), Device::GroupControlState::GCS_FREE);
-        }
-    }
-}
-
 void DeviceManage::onDeviceConnected(bool success, const QString &serial, const QString &deviceName, const QSize &size)
 {
     if (!success) {
@@ -205,84 +133,6 @@ void DeviceManage::onDeviceDisconnected(QString serial)
     emit deviceDisconnected(serial);
 }
 
-void DeviceManage::onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState)
-{
-    if (!device) {
-        return;
-    }
-    // free to host
-    if (oldState == Device::GroupControlState::GCS_FREE && newState == Device::GroupControlState::GCS_HOST) {
-        // install direct control signals
-        setGroupControlHost(device, true);
-        // install convert control signals(frameSize need convert)
-        connect(device, &Device::mouseEvent, this, &DeviceManage::onMouseEvent, Qt::UniqueConnection);
-        connect(device, &Device::wheelEvent, this, &DeviceManage::onWheelEvent, Qt::UniqueConnection);
-        connect(device, &Device::keyEvent, this, &DeviceManage::onKeyEvent, Qt::UniqueConnection);
-        return;
-    }
-    // host to free
-    if (oldState == Device::GroupControlState::GCS_HOST && newState == Device::GroupControlState::GCS_FREE) {
-        // uninstall direct control signals
-        setGroupControlHost(device, false);
-        // uninstall convert control signals(frameSize need convert)
-        disconnect(device, &Device::mouseEvent, this, &DeviceManage::onMouseEvent);
-        disconnect(device, &Device::wheelEvent, this, &DeviceManage::onWheelEvent);
-        disconnect(device, &Device::keyEvent, this, &DeviceManage::onKeyEvent);
-        return;
-    }
-}
-
-void DeviceManage::onMouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
-{
-    Q_UNUSED(frameSize)
-    QMapIterator<QString, QPointer<Device>> i(m_devices);
-    while (i.hasNext()) {
-        i.next();
-        if (!i.value()) {
-            continue;
-        }
-        if (i.value() == sender()) {
-            continue;
-        }
-        // neend convert frameSize to its frameSize
-        emit i.value()->mouseEvent(from, i.value()->frameSize(), showSize);
-    }
-}
-
-void DeviceManage::onWheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
-{
-    Q_UNUSED(frameSize)
-    QMapIterator<QString, QPointer<Device>> i(m_devices);
-    while (i.hasNext()) {
-        i.next();
-        if (!i.value()) {
-            continue;
-        }
-        if (i.value() == sender()) {
-            continue;
-        }
-        // neend convert frameSize to its frameSize
-        emit i.value()->wheelEvent(from, i.value()->frameSize(), showSize);
-    }
-}
-
-void DeviceManage::onKeyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize)
-{
-    Q_UNUSED(frameSize)
-    QMapIterator<QString, QPointer<Device>> i(m_devices);
-    while (i.hasNext()) {
-        i.next();
-        if (!i.value()) {
-            continue;
-        }
-        if (i.value() == sender()) {
-            continue;
-        }
-        // neend convert frameSize to its frameSize
-        emit i.value()->keyEvent(from, i.value()->frameSize(), showSize);
-    }
-}
-
 quint16 DeviceManage::getFreePort()
 {
     quint16 port = m_localPortStart;
@@ -308,9 +158,6 @@ quint16 DeviceManage::getFreePort()
 void DeviceManage::removeDevice(const QString &serial)
 {
     if (!serial.isEmpty() && m_devices.contains(serial)) {
-        if (m_devices[serial]->controlState() == Device::GroupControlState::GCS_HOST) {
-            setGroupControlHost(nullptr, false);
-        }
         m_devices[serial]->deleteLater();
         m_devices.remove(serial);
     }
diff --git a/QtScrcpy/devicemanage/devicemanage.h b/QtScrcpy/devicemanage/devicemanage.h
index 652fa5b..e466be0 100644
--- a/QtScrcpy/devicemanage/devicemanage.h
+++ b/QtScrcpy/devicemanage/devicemanage.h
@@ -25,19 +25,9 @@ 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);
-    void setGroupControlHost(Device *host, bool install);
-
 protected slots:
     void onDeviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
     void onDeviceDisconnected(QString serial);
-    void onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState);
-
-    // neend convert frameSize to its frameSize
-    void onMouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize);
-    void onWheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize);
-    void onKeyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize);
 
 private:
     quint16 getFreePort();
diff --git a/QtScrcpy/ui/toolform.cpp b/QtScrcpy/ui/toolform.cpp
index 3155129..dcaaa0f 100644
--- a/QtScrcpy/ui/toolform.cpp
+++ b/QtScrcpy/ui/toolform.cpp
@@ -7,6 +7,7 @@
 #include "iconhelper.h"
 #include "toolform.h"
 #include "ui_toolform.h"
+#include "videoform.h"
 
 ToolForm::ToolForm(QWidget *adsorbWidget, AdsorbPositions adsorbPos) : MagneticWidget(adsorbWidget, adsorbPos), ui(new Ui::ToolForm)
 {
@@ -28,7 +29,6 @@ void ToolForm::setDevice(Device *device)
         return;
     }
     m_device = device;
-    connect(m_device, &Device::controlStateChange, this, &ToolForm::onControlStateChange);
 }
 
 void ToolForm::initStyle()
@@ -55,17 +55,6 @@ void ToolForm::updateGroupControl()
     if (!m_device) {
         return;
     }
-    switch (m_device->controlState()) {
-    case Device::GroupControlState::GCS_FREE:
-        ui->groupControlBtn->setStyleSheet("color: #DCDCDC");
-        break;
-    case Device::GroupControlState::GCS_HOST:
-        ui->groupControlBtn->setStyleSheet("color: red");
-        break;
-    case Device::GroupControlState::GCS_CLIENT:
-        ui->groupControlBtn->setStyleSheet("color: green");
-        break;
-    }
 }
 
 void ToolForm::mousePressEvent(QMouseEvent *event)
@@ -107,7 +96,7 @@ void ToolForm::on_fullScreenBtn_clicked()
         return;
     }
 
-    emit m_device->switchFullScreen();
+    dynamic_cast<VideoForm*>(parent())->switchFullScreen();
 }
 
 void ToolForm::on_returnBtn_clicked()
@@ -115,7 +104,7 @@ void ToolForm::on_returnBtn_clicked()
     if (!m_device) {
         return;
     }
-    emit m_device->postGoBack();
+    m_device->postGoBack();
 }
 
 void ToolForm::on_homeBtn_clicked()
@@ -123,7 +112,7 @@ void ToolForm::on_homeBtn_clicked()
     if (!m_device) {
         return;
     }
-    emit m_device->postGoHome();
+    m_device->postGoHome();
 }
 
 void ToolForm::on_menuBtn_clicked()
@@ -131,7 +120,7 @@ void ToolForm::on_menuBtn_clicked()
     if (!m_device) {
         return;
     }
-    emit m_device->postGoMenu();
+    m_device->postGoMenu();
 }
 
 void ToolForm::on_appSwitchBtn_clicked()
@@ -155,7 +144,7 @@ void ToolForm::on_screenShotBtn_clicked()
     if (!m_device) {
         return;
     }
-    emit m_device->screenshot();
+    m_device->screenshot();
 }
 
 void ToolForm::on_volumeUpBtn_clicked()
@@ -197,7 +186,7 @@ void ToolForm::on_touchBtn_clicked()
     }
 
     m_showTouch = !m_showTouch;
-    emit m_device->showTouch(m_showTouch);
+    m_device->showTouch(m_showTouch);
 }
 
 void ToolForm::on_groupControlBtn_clicked()
@@ -205,21 +194,6 @@ void ToolForm::on_groupControlBtn_clicked()
     if (!m_device) {
         return;
     }
-    Device::GroupControlState state = m_device->controlState();
-    if (state == Device::GroupControlState::GCS_FREE) {
-        emit m_device->setControlState(m_device, Device::GroupControlState::GCS_HOST);
-    }
-    if (state == Device::GroupControlState::GCS_HOST) {
-        emit m_device->setControlState(m_device, Device::GroupControlState::GCS_FREE);
-    }
-}
-
-void ToolForm::onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState)
-{
-    Q_UNUSED(device)
-    Q_UNUSED(oldState)
-    Q_UNUSED(newState)
-    updateGroupControl();
 }
 
 void ToolForm::on_openScreenBtn_clicked()
diff --git a/QtScrcpy/ui/toolform.h b/QtScrcpy/ui/toolform.h
index 5762a34..cbee061 100644
--- a/QtScrcpy/ui/toolform.h
+++ b/QtScrcpy/ui/toolform.h
@@ -45,9 +45,6 @@ private slots:
     void on_expandNotifyBtn_clicked();
     void on_touchBtn_clicked();
     void on_groupControlBtn_clicked();
-
-    void onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState);
-
     void on_openScreenBtn_clicked();
 
 private:
diff --git a/QtScrcpy/ui/videoform.cpp b/QtScrcpy/ui/videoform.cpp
index 36e787f..5cc6a92 100644
--- a/QtScrcpy/ui/videoform.cpp
+++ b/QtScrcpy/ui/videoform.cpp
@@ -193,7 +193,7 @@ void VideoForm::installShortcut()
         if (!m_device) {
             return;
         }
-        emit m_device->switchFullScreen();
+        switchFullScreen();
     });
 
     // resizeSquare
@@ -213,7 +213,7 @@ void VideoForm::installShortcut()
         if (!m_device) {
             return;
         }
-        emit m_device->postGoHome();
+        m_device->postGoHome();
     });
 
     // postGoBack
@@ -223,7 +223,7 @@ void VideoForm::installShortcut()
         if (!m_device) {
             return;
         }
-        emit m_device->postGoBack();
+        m_device->postGoBack();
     });
 
     // postAppSwitch
@@ -243,7 +243,7 @@ void VideoForm::installShortcut()
         if (!m_device) {
             return;
         }
-        emit m_device->postGoMenu();
+        m_device->postGoMenu();
     });
 
     // postVolumeUp
@@ -421,7 +421,7 @@ void VideoForm::updateShowSize(const QSize &newSize)
         }
 
         if (isFullScreen() && m_device) {
-            emit m_device->switchFullScreen();
+            switchFullScreen();
         }
 
         if (isMaximized()) {
@@ -444,7 +444,7 @@ void VideoForm::updateShowSize(const QSize &newSize)
     }
 }
 
-void VideoForm::onSwitchFullScreen()
+void VideoForm::switchFullScreen()
 {
     if (isFullScreen()) {
         // 横屏全屏铺满全屏，恢复时，恢复保持宽高比
@@ -525,14 +525,14 @@ void VideoForm::mousePressEvent(QMouseEvent *event)
 {
     if (event->button() == Qt::MiddleButton) {
         if (m_device && !m_device->isCurrentCustomKeymap()) {
-            emit m_device->postGoHome();
+            m_device->postGoHome();
             return;
         }
     }
 
     if (event->button() == Qt::RightButton) {
         if (m_device && !m_device->isCurrentCustomKeymap()) {
-            emit m_device->postGoBack();
+            m_device->postGoBack();
             return;
         }
     }
@@ -655,7 +655,7 @@ void VideoForm::keyPressEvent(QKeyEvent *event)
         return;
     }
     if (Qt::Key_Escape == event->key() && !event->isAutoRepeat() && isFullScreen()) {
-        emit m_device->switchFullScreen();
+        switchFullScreen();
     }
 
     emit m_device->keyEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
diff --git a/QtScrcpy/ui/videoform.h b/QtScrcpy/ui/videoform.h
index 309cf7d..96e53b8 100644
--- a/QtScrcpy/ui/videoform.h
+++ b/QtScrcpy/ui/videoform.h
@@ -30,9 +30,9 @@ public:
     void resizeSquare();
     void removeBlackRect();
     void showFPS(bool show);
+    void switchFullScreen();
 
 public slots:
-    void onSwitchFullScreen();
     void updateFPS(quint32 fps);
 
 private: