diff --git a/QtScrcpy/CMakeLists.txt b/QtScrcpy/CMakeLists.txt
index 97f6943..b21a9ba 100755
--- a/QtScrcpy/CMakeLists.txt
+++ b/QtScrcpy/CMakeLists.txt
@@ -124,6 +124,13 @@ set(QC_UI_SOURCES
 )
 source_group(ui FILES ${QC_UI_SOURCES})
 
+# group controller
+set(QC_GROUP_CONTROLLER
+    groupcontroller/groupcontroller.h
+    groupcontroller/groupcontroller.cpp
+)
+source_group(groupcontroller FILES ${QC_GROUP_CONTROLLER})
+
 # util
 set(QC_UTIL_SOURCES
     util/config.h
@@ -196,6 +203,7 @@ set(QC_PROJECT_SOURCES
     ${QC_UI_SOURCES}
     ${QC_UTIL_SOURCES}
     ${QC_MAIN_SOURCES}
+    ${QC_GROUP_CONTROLLER}
     ${QC_PLANTFORM_SOURCES}
 )
 
diff --git a/QtScrcpy/QtScrcpyCore/include/QtScrcpyCore.h b/QtScrcpy/QtScrcpyCore/include/QtScrcpyCore.h
index 551d135..c27ab4e 100644
--- a/QtScrcpy/QtScrcpyCore/include/QtScrcpyCore.h
+++ b/QtScrcpy/QtScrcpyCore/include/QtScrcpyCore.h
@@ -27,6 +27,47 @@ public:
     }
     virtual void updateFPS(quint32 fps) { Q_UNUSED(fps); }
     virtual void grabCursor(bool grab) {Q_UNUSED(grab);}
+
+    virtual void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize) {
+        Q_UNUSED(from);
+        Q_UNUSED(frameSize);
+        Q_UNUSED(showSize);
+    }
+    virtual void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize) {
+        Q_UNUSED(from);
+        Q_UNUSED(frameSize);
+        Q_UNUSED(showSize);
+    }
+    virtual void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize) {
+        Q_UNUSED(from);
+        Q_UNUSED(frameSize);
+        Q_UNUSED(showSize);
+    }
+
+    virtual void postGoBack() {}
+    virtual void postGoHome() {}
+    virtual void postGoMenu() {}
+    virtual void postAppSwitch() {}
+    virtual void postPower() {}
+    virtual void postVolumeUp() {}
+    virtual void postVolumeDown() {}
+    virtual void postCopy() {}
+    virtual void postCut() {}
+    virtual void setScreenPowerMode(bool open) { Q_UNUSED(open); }
+    virtual void expandNotificationPanel() {}
+    virtual void collapsePanel() {}
+    virtual void postBackOrScreenOn(bool down) { Q_UNUSED(down); }
+    virtual void postTextInput(QString &text) { Q_UNUSED(text); }
+    virtual void requestDeviceClipboard() {}
+    virtual void setDeviceClipboard(bool pause = true) { Q_UNUSED(pause); }
+    virtual void clipboardPaste() {}
+    virtual void pushFileRequest(const QString &file, const QString &devicePath) {
+        Q_UNUSED(file);
+        Q_UNUSED(devicePath);
+    }
+    virtual void installApkRequest(const QString &apkFile) { Q_UNUSED(apkFile); }
+    virtual void screenshot() {}
+    virtual void showTouch(bool show) { Q_UNUSED(show); }
 };
 
 class IDevice : public QObject {
diff --git a/QtScrcpy/QtScrcpyCore/src/device/device.cpp b/QtScrcpy/QtScrcpyCore/src/device/device.cpp
index bfcf87c..7938606 100644
--- a/QtScrcpy/QtScrcpyCore/src/device/device.cpp
+++ b/QtScrcpy/QtScrcpyCore/src/device/device.cpp
@@ -328,6 +328,10 @@ void Device::postGoBack()
         return;
     }
     m_controller->postGoBack();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postGoBack();
+    }
 }
 
 void Device::postGoHome()
@@ -336,6 +340,10 @@ void Device::postGoHome()
         return;
     }
     m_controller->postGoHome();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postGoHome();
+    }
 }
 
 void Device::postGoMenu()
@@ -344,6 +352,10 @@ void Device::postGoMenu()
         return;
     }
     m_controller->postGoMenu();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postGoMenu();
+    }
 }
 
 void Device::postAppSwitch()
@@ -352,6 +364,10 @@ void Device::postAppSwitch()
         return;
     }
     m_controller->postAppSwitch();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postAppSwitch();
+    }
 }
 
 void Device::postPower()
@@ -360,6 +376,10 @@ void Device::postPower()
         return;
     }
     m_controller->postPower();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postPower();
+    }
 }
 
 void Device::postVolumeUp()
@@ -368,6 +388,10 @@ void Device::postVolumeUp()
         return;
     }
     m_controller->postVolumeUp();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postVolumeUp();
+    }
 }
 
 void Device::postVolumeDown()
@@ -376,6 +400,10 @@ void Device::postVolumeDown()
         return;
     }
     m_controller->postVolumeDown();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postVolumeDown();
+    }
 }
 
 void Device::postCopy()
@@ -384,6 +412,10 @@ void Device::postCopy()
         return;
     }
     m_controller->copy();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postCopy();
+    }
 }
 
 void Device::postCut()
@@ -392,6 +424,10 @@ void Device::postCut()
         return;
     }
     m_controller->cut();
+
+    for (const auto& item : m_deviceObservers) {
+        item->postCut();
+    }
 }
 
 void Device::setScreenPowerMode(bool open)
@@ -406,6 +442,10 @@ void Device::setScreenPowerMode(bool open)
         mode = ControlMsg::SPM_OFF;
     }
     m_controller->setScreenPowerMode(mode);
+
+    for (const auto& item : m_deviceObservers) {
+        item->setScreenPowerMode(open);
+    }
 }
 
 void Device::expandNotificationPanel()
@@ -414,6 +454,10 @@ void Device::expandNotificationPanel()
         return;
     }
     m_controller->expandNotificationPanel();
+
+    for (const auto& item : m_deviceObservers) {
+        item->expandNotificationPanel();
+    }
 }
 
 void Device::collapsePanel()
@@ -422,6 +466,10 @@ void Device::collapsePanel()
         return;
     }
     m_controller->collapsePanel();
+
+    for (const auto& item : m_deviceObservers) {
+        item->collapsePanel();
+    }
 }
 
 void Device::postBackOrScreenOn(bool down)
@@ -430,6 +478,10 @@ void Device::postBackOrScreenOn(bool down)
         return;
     }
     m_controller->postBackOrScreenOn(down);
+
+    for (const auto& item : m_deviceObservers) {
+        item->postBackOrScreenOn(down);
+    }
 }
 
 void Device::postTextInput(QString &text)
@@ -438,6 +490,10 @@ void Device::postTextInput(QString &text)
         return;
     }
     m_controller->postTextInput(text);
+
+    for (const auto& item : m_deviceObservers) {
+        item->postTextInput(text);
+    }
 }
 
 void Device::requestDeviceClipboard()
@@ -446,6 +502,10 @@ void Device::requestDeviceClipboard()
         return;
     }
     m_controller->requestDeviceClipboard();
+
+    for (const auto& item : m_deviceObservers) {
+        item->requestDeviceClipboard();
+    }
 }
 
 void Device::setDeviceClipboard(bool pause)
@@ -454,6 +514,10 @@ void Device::setDeviceClipboard(bool pause)
         return;
     }
     m_controller->setDeviceClipboard(pause);
+
+    for (const auto& item : m_deviceObservers) {
+        item->setDeviceClipboard(pause);
+    }
 }
 
 void Device::clipboardPaste()
@@ -462,6 +526,10 @@ void Device::clipboardPaste()
         return;
     }
     m_controller->clipboardPaste();
+
+    for (const auto& item : m_deviceObservers) {
+        item->clipboardPaste();
+    }
 }
 
 void Device::pushFileRequest(const QString &file, const QString &devicePath)
@@ -470,6 +538,10 @@ void Device::pushFileRequest(const QString &file, const QString &devicePath)
         return;
     }
     m_fileHandler->onPushFileRequest(getSerial(), file, devicePath);
+
+    for (const auto& item : m_deviceObservers) {
+        item->pushFileRequest(file, devicePath);
+    }
 }
 
 void Device::installApkRequest(const QString &apkFile)
@@ -478,6 +550,10 @@ void Device::installApkRequest(const QString &apkFile)
         return;
     }
     m_fileHandler->onInstallApkRequest(getSerial(), apkFile);
+
+    for (const auto& item : m_deviceObservers) {
+        item->installApkRequest(apkFile);
+    }
 }
 
 void Device::mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
@@ -486,6 +562,10 @@ void Device::mouseEvent(const QMouseEvent *from, const QSize &frameSize, const Q
         return;
     }
     m_controller->mouseEvent(from, frameSize, showSize);
+
+    for (const auto& item : m_deviceObservers) {
+        item->mouseEvent(from, frameSize, showSize);
+    }
 }
 
 void Device::wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
@@ -494,6 +574,10 @@ void Device::wheelEvent(const QWheelEvent *from, const QSize &frameSize, const Q
         return;
     }
     m_controller->wheelEvent(from, frameSize, showSize);
+
+    for (const auto& item : m_deviceObservers) {
+        item->wheelEvent(from, frameSize, showSize);
+    }
 }
 
 void Device::keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize)
@@ -502,6 +586,10 @@ void Device::keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize
         return;
     }
     m_controller->keyEvent(from, frameSize, showSize);
+
+    for (const auto& item : m_deviceObservers) {
+        item->keyEvent(from, frameSize, showSize);
+    }
 }
 
 bool Device::isCurrentCustomKeymap()
diff --git a/QtScrcpy/QtScrcpyCore/src/device/device.h b/QtScrcpy/QtScrcpyCore/src/device/device.h
index 492728c..835fa64 100644
--- a/QtScrcpy/QtScrcpyCore/src/device/device.h
+++ b/QtScrcpy/QtScrcpyCore/src/device/device.h
@@ -68,7 +68,6 @@ public:
 
     void screenshot() override;
     void showTouch(bool show) override;
-    //void grabCursor(bool grab);
 
     bool isReversePort(quint16 port) override;
     const QString &getSerial() override;
diff --git a/QtScrcpy/groupcontroller/groupcontroller.cpp b/QtScrcpy/groupcontroller/groupcontroller.cpp
new file mode 100644
index 0000000..23393f1
--- /dev/null
+++ b/QtScrcpy/groupcontroller/groupcontroller.cpp
@@ -0,0 +1,440 @@
+#include <QPointer>
+
+#include "groupcontroller.h"
+#include "videoform.h"
+
+GroupController::GroupController(QObject *parent) : QObject(parent)
+{
+
+}
+
+bool GroupController::isHost(const QString &serial)
+{
+    auto data = qsc::IDeviceManage::getInstance().getDevice(serial)->getUserData();
+    if (!data) {
+        return true;
+    }
+
+    return static_cast<VideoForm*>(data)->isHost();
+}
+
+QSize GroupController::getFrameSize(const QString &serial)
+{
+    auto data = qsc::IDeviceManage::getInstance().getDevice(serial)->getUserData();
+    if (!data) {
+        return QSize();
+    }
+
+    return static_cast<VideoForm*>(data)->frameSize();
+}
+
+GroupController &GroupController::instance()
+{
+    static GroupController gc;
+    return gc;
+}
+
+void GroupController::updateDeviceState(const QString &serial)
+{
+    if (!m_devices.contains(serial)) {
+        return;
+    }
+
+    auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+    if (!device) {
+        return;
+    }
+
+    if (isHost(serial)) {
+        device->registerDeviceObserver(this);
+    } else {
+        device->deRegisterDeviceObserver(this);
+    }
+}
+
+void GroupController::addDevice(const QString &serial)
+{
+    if (m_devices.contains(serial)) {
+        return;
+    }
+
+    m_devices.append(serial);
+}
+
+void GroupController::removeDevice(const QString &serial)
+{
+    if (!m_devices.contains(serial)) {
+        return;
+    }
+
+    m_devices.removeOne(serial);
+
+    auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+    if (!device) {
+        return;
+    }
+
+    if (isHost(serial)) {
+        device->deRegisterDeviceObserver(this);
+    }
+}
+
+void GroupController::mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->mouseEvent(from, getFrameSize(serial), showSize);
+    }
+}
+
+void GroupController::wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->wheelEvent(from, getFrameSize(serial), showSize);
+    }
+}
+
+void GroupController::keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->keyEvent(from, getFrameSize(serial), showSize);
+    }
+}
+
+void GroupController::postGoBack()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postGoBack();
+    }
+}
+
+void GroupController::postGoHome()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postGoHome();
+    }
+}
+
+void GroupController::postGoMenu()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postGoMenu();
+    }
+}
+
+void GroupController::postAppSwitch()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postAppSwitch();
+    }
+}
+
+void GroupController::postPower()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postPower();
+    }
+}
+
+void GroupController::postVolumeUp()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postVolumeUp();
+    }
+}
+
+void GroupController::postVolumeDown()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postVolumeDown();
+    }
+}
+
+void GroupController::postCopy()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postCopy();
+    }
+}
+
+void GroupController::postCut()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postCut();
+    }
+}
+
+void GroupController::setScreenPowerMode(bool open)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->setScreenPowerMode(open);
+    }
+}
+
+void GroupController::expandNotificationPanel()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->expandNotificationPanel();
+    }
+}
+
+void GroupController::collapsePanel()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->collapsePanel();
+    }
+}
+
+void GroupController::postBackOrScreenOn(bool down)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postBackOrScreenOn(down);
+    }
+}
+
+void GroupController::postTextInput(QString &text)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->postTextInput(text);
+    }
+}
+
+void GroupController::requestDeviceClipboard()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->requestDeviceClipboard();
+    }
+}
+
+void GroupController::setDeviceClipboard(bool pause)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->setDeviceClipboard(pause);
+    }
+}
+
+void GroupController::clipboardPaste()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->clipboardPaste();
+    }
+}
+
+void GroupController::pushFileRequest(const QString &file, const QString &devicePath)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->pushFileRequest(file, devicePath);
+    }
+}
+
+void GroupController::installApkRequest(const QString &apkFile)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->installApkRequest(apkFile);
+    }
+}
+
+void GroupController::screenshot()
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->screenshot();
+    }
+}
+
+void GroupController::showTouch(bool show)
+{
+    for (const auto& serial : m_devices) {
+        if (true == isHost(serial)) {
+            continue;
+        }
+        auto device = qsc::IDeviceManage::getInstance().getDevice(serial);
+        if (!device) {
+            continue;
+        }
+
+        device->showTouch(show);
+    }
+}
diff --git a/QtScrcpy/groupcontroller/groupcontroller.h b/QtScrcpy/groupcontroller/groupcontroller.h
new file mode 100644
index 0000000..bb2136d
--- /dev/null
+++ b/QtScrcpy/groupcontroller/groupcontroller.h
@@ -0,0 +1,56 @@
+#ifndef GROUPCONTROLLER_H
+#define GROUPCONTROLLER_H
+
+#include <QObject>
+#include <QVector>
+
+#include "QtScrcpyCore.h"
+
+class GroupController : public QObject, public qsc::DeviceObserver
+{
+    Q_OBJECT
+public:
+    static GroupController& instance();
+
+    void updateDeviceState(const QString& serial);
+    void addDevice(const QString& serial);
+    void removeDevice(const QString& serial);
+
+private:
+    // DeviceObserver
+    void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize) override;
+    void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize) override;
+    void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize) override;
+
+    void postGoBack() override;
+    void postGoHome() override;
+    void postGoMenu() override;
+    void postAppSwitch() override;
+    void postPower() override;
+    void postVolumeUp() override;
+    void postVolumeDown() override;
+    void postCopy() override;
+    void postCut() override;
+    void setScreenPowerMode(bool open) override;
+    void expandNotificationPanel() override;
+    void collapsePanel() override;
+    void postBackOrScreenOn(bool down) override;
+    void postTextInput(QString &text) override;
+    void requestDeviceClipboard() override;
+    void setDeviceClipboard(bool pause = true) override;
+    void clipboardPaste() override;
+    void pushFileRequest(const QString &file, const QString &devicePath = "") override;
+    void installApkRequest(const QString &apkFile) override;
+    void screenshot() override;
+    void showTouch(bool show) override;
+
+private:
+    explicit GroupController(QObject *parent = nullptr);
+    bool isHost(const QString& serial);
+    QSize getFrameSize(const QString& serial);
+
+private:
+    QVector<QString> m_devices;
+};
+
+#endif // GROUPCONTROLLER_H
diff --git a/QtScrcpy/main.cpp b/QtScrcpy/main.cpp
index 7471877..b85d218 100644
--- a/QtScrcpy/main.cpp
+++ b/QtScrcpy/main.cpp
@@ -22,7 +22,7 @@ int main(int argc, char *argv[])
 {
     // set env
 #ifdef Q_OS_WIN32
-    qputenv("QTSCRCPY_ADB_PATH", "../../../QtScrcpy/QtScrcpyCore/src/third_party/adb/win/adb.exe");
+    qputenv("QTSCRCPY_ADB_PATH", "D:/android/sdk/platform-tools/adb.exe");
     qputenv("QTSCRCPY_SERVER_PATH", "../../../QtScrcpy/QtScrcpyCore/src/third_party/scrcpy-server");
     qputenv("QTSCRCPY_KEYMAP_PATH", "../../../keymap");
     qputenv("QTSCRCPY_CONFIG_PATH", "../../../config");
diff --git a/QtScrcpy/ui/dialog.cpp b/QtScrcpy/ui/dialog.cpp
index 1ee65e4..1683cf6 100644
--- a/QtScrcpy/ui/dialog.cpp
+++ b/QtScrcpy/ui/dialog.cpp
@@ -9,6 +9,7 @@
 #include "dialog.h"
 #include "ui_dialog.h"
 #include "videoform.h"
+#include "../groupcontroller/groupcontroller.h"
 
 QString s_keyMapPath = "";
 
@@ -457,10 +458,13 @@ void Dialog::onDeviceConnected(bool success, const QString &serial, const QStrin
         videoForm->setGeometry(rc);
     }
 
+    GroupController::instance().addDevice(serial);
 }
 
 void Dialog::onDeviceDisconnected(QString serial)
 {
+    GroupController::instance().removeDevice(serial);
+
     auto data = qsc::IDeviceManage::getInstance().getDevice(serial)->getUserData();
     if (data) {
         VideoForm* vf = static_cast<VideoForm*>(data);
diff --git a/QtScrcpy/ui/toolform.cpp b/QtScrcpy/ui/toolform.cpp
index d9f1332..f9e0ba8 100644
--- a/QtScrcpy/ui/toolform.cpp
+++ b/QtScrcpy/ui/toolform.cpp
@@ -7,6 +7,7 @@
 #include "toolform.h"
 #include "ui_toolform.h"
 #include "videoform.h"
+#include "../groupcontroller/groupcontroller.h"
 
 ToolForm::ToolForm(QWidget *adsorbWidget, AdsorbPositions adsorbPos) : MagneticWidget(adsorbWidget, adsorbPos), ui(new Ui::ToolForm)
 {
@@ -14,6 +15,8 @@ ToolForm::ToolForm(QWidget *adsorbWidget, AdsorbPositions adsorbPos) : MagneticW
     setWindowFlags(windowFlags() | Qt::FramelessWindowHint);
     //setWindowFlags(windowFlags() & ~Qt::WindowMinMaxButtonsHint);
 
+    updateGroupControl();
+
     initStyle();
 }
 
@@ -27,6 +30,11 @@ void ToolForm::setSerial(const QString &serial)
     m_serial = serial;
 }
 
+bool ToolForm::isHost()
+{
+    return m_isHost;
+}
+
 void ToolForm::initStyle()
 {
     IconHelper::Instance()->SetIcon(ui->fullScreenBtn, QChar(0xf0b2), 15);
@@ -48,10 +56,13 @@ void ToolForm::initStyle()
 
 void ToolForm::updateGroupControl()
 {
-    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
-    if (!device) {
-        return;
+    if (m_isHost) {
+        ui->groupControlBtn->setStyleSheet("color: red");
+    } else {
+        ui->groupControlBtn->setStyleSheet("color: green");
     }
+
+    GroupController::instance().updateDeviceState(m_serial);
 }
 
 void ToolForm::mousePressEvent(QMouseEvent *event)
@@ -130,7 +141,7 @@ void ToolForm::on_appSwitchBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->postAppSwitch();
+    device->postAppSwitch();
 }
 
 void ToolForm::on_powerBtn_clicked()
@@ -139,7 +150,7 @@ void ToolForm::on_powerBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->postPower();
+    device->postPower();
 }
 
 void ToolForm::on_screenShotBtn_clicked()
@@ -157,7 +168,7 @@ void ToolForm::on_volumeUpBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->postVolumeUp();
+    device->postVolumeUp();
 }
 
 void ToolForm::on_volumeDownBtn_clicked()
@@ -166,7 +177,7 @@ void ToolForm::on_volumeDownBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->postVolumeDown();
+    device->postVolumeDown();
 }
 
 void ToolForm::on_closeScreenBtn_clicked()
@@ -175,7 +186,7 @@ void ToolForm::on_closeScreenBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->setScreenPowerMode(false);
+    device->setScreenPowerMode(false);
 }
 
 void ToolForm::on_expandNotifyBtn_clicked()
@@ -184,7 +195,7 @@ void ToolForm::on_expandNotifyBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->expandNotificationPanel();
+    device->expandNotificationPanel();
 }
 
 void ToolForm::on_touchBtn_clicked()
@@ -200,7 +211,8 @@ void ToolForm::on_touchBtn_clicked()
 
 void ToolForm::on_groupControlBtn_clicked()
 {
-
+    m_isHost = !m_isHost;
+    updateGroupControl();
 }
 
 void ToolForm::on_openScreenBtn_clicked()
@@ -209,5 +221,5 @@ void ToolForm::on_openScreenBtn_clicked()
     if (!device) {
         return;
     }
-    emit device->setScreenPowerMode(true);
+    device->setScreenPowerMode(true);
 }
diff --git a/QtScrcpy/ui/toolform.h b/QtScrcpy/ui/toolform.h
index df75d7d..0848638 100644
--- a/QtScrcpy/ui/toolform.h
+++ b/QtScrcpy/ui/toolform.h
@@ -22,6 +22,7 @@ public:
     ~ToolForm();
 
     void setSerial(const QString& serial);
+    bool isHost();
 
 protected:
     void mousePressEvent(QMouseEvent *event);
@@ -56,6 +57,7 @@ private:
     QPoint m_dragPosition;
     QString m_serial;
     bool m_showTouch = false;
+    bool m_isHost = false;
 };
 
 #endif // TOOLFORM_H
diff --git a/QtScrcpy/ui/toolform.ui b/QtScrcpy/ui/toolform.ui
index cabb9e9..82d94af 100644
--- a/QtScrcpy/ui/toolform.ui
+++ b/QtScrcpy/ui/toolform.ui
@@ -22,6 +22,9 @@
    </property>
    <item>
     <widget class="QPushButton" name="groupControlBtn">
+     <property name="toolTip">
+      <string>group control</string>
+     </property>
      <property name="text">
       <string/>
      </property>
diff --git a/QtScrcpy/ui/videoform.cpp b/QtScrcpy/ui/videoform.cpp
index 11eaf14..839f11a 100644
--- a/QtScrcpy/ui/videoform.cpp
+++ b/QtScrcpy/ui/videoform.cpp
@@ -506,6 +506,11 @@ void VideoForm::switchFullScreen()
     }
 }
 
+bool VideoForm::isHost()
+{
+    return m_toolForm->isHost();
+}
+
 void VideoForm::updateFPS(quint32 fps)
 {
     //qDebug() << "FPS:" << fps;
diff --git a/QtScrcpy/ui/videoform.h b/QtScrcpy/ui/videoform.h
index 0a442d7..9f79aef 100644
--- a/QtScrcpy/ui/videoform.h
+++ b/QtScrcpy/ui/videoform.h
@@ -33,6 +33,8 @@ public:
     void showFPS(bool show);
     void switchFullScreen();
 
+    bool isHost();
+
 private:
     void onFrame(int width, int height, uint8_t* dataY, uint8_t* dataU, uint8_t* dataV,
                  int linesizeY, int linesizeU, int linesizeV) override;