diff --git a/QtScrcpy/MainWindow.qml b/QtScrcpy/MainWindow.qml
index 1c8b0ab..b7f8dac 100644
--- a/QtScrcpy/MainWindow.qml
+++ b/QtScrcpy/MainWindow.qml
@@ -2,21 +2,30 @@ import QtQuick 2.12
 import QtQuick.Window 2.12
 
 Window {
-    id: window
+    id: root
     visible: true
-    flags: Qt.Window |Qt.FramelessWindowHint
+    flags: Qt.Window | Qt.FramelessWindowHint | Qt.WindowMaximizeButtonHint
     width: 800
     height: 600
     color: "transparent"
 
-    // bg
-    BorderImage {
-        id: background
+    property real backgroundRadius: 4
+    property bool backgroundHasBorder: true
+    property color backgroundColor: "#2E2F30"
+    property color backgroundBorderColor: "#555656"
+
+    Rectangle {
+        id: backgroundView
         anchors.fill: parent
-        source: "qrc:/image/mainwindow/bg.png"
-        border { left: 30; top: 30; right: 30; bottom: 30 }
-        horizontalTileMode: BorderImage.Stretch
-        verticalTileMode: BorderImage.Stretch
+        color: root.backgroundColor
+        radius: root.backgroundRadius
+        clip: true
+        antialiasing: true
+
+        border {
+            color: root.backgroundHasBorder ? root.backgroundBorderColor : "transparent"
+            width: root.backgroundHasBorder ? 1 : 0
+        }
     }
 
     Rectangle {
@@ -28,23 +37,7 @@ Window {
 
         DragHandler {
             grabPermissions: TapHandler.CanTakeOverFromAnything
-            onActiveChanged: if (active) { window.startSystemMove(); }
+            onActiveChanged: if (active) { root.startSystemMove(); }
         }
     }
-
-    DragHandler {
-        id: resizeHandler
-        grabPermissions: TapHandler.TakeOverForbidden
-        target: null
-        onActiveChanged:
-            if (active) {
-                const p = resizeHandler.centroid.position;
-                let e = 0;
-                if (p.x / width < 0.10) { e |= Qt.LeftEdge }
-                if (p.x / width > 0.90) { e |= Qt.RightEdge }
-                if (p.y / height > 0.90) { e |= Qt.BottomEdge }
-                console.log("RESIZING", e);
-                window.startSystemResize(e);
-            }
-    }
 }
diff --git a/QtScrcpy/main.cpp b/QtScrcpy/main.cpp
index d4d48cb..993168a 100644
--- a/QtScrcpy/main.cpp
+++ b/QtScrcpy/main.cpp
@@ -11,6 +11,7 @@
 #include "dialog.h"
 #include "mousetap/mousetap.h"
 #include "stream.h"
+#include "windowframelesshelper.h"
 
 static Dialog *g_mainDlg = Q_NULLPTR;
 
@@ -75,6 +76,10 @@ int main(int argc, char *argv[])
     QApplication app(argc, argv);
     QQmlApplicationEngine engine("qrc:/MainWindow.qml");
 
+#ifdef Q_OS_WIN32
+    WindowFramelessHelper::Instance()->Init();
+#endif
+
     // windows下通过qmake VERSION变量或者rc设置版本号和应用名称后，这里可以直接拿到
     // mac下拿到的是CFBundleVersion的值
     qDebug() << app.applicationVersion();
diff --git a/QtScrcpy/uibase/uibase.pri b/QtScrcpy/uibase/uibase.pri
index cac526a..1a29b2d 100644
--- a/QtScrcpy/uibase/uibase.pri
+++ b/QtScrcpy/uibase/uibase.pri
@@ -2,8 +2,11 @@ FORMS +=
 
 HEADERS += \
     $$PWD/keepratiowidget.h \
-    $$PWD/magneticwidget.h
+    $$PWD/magneticwidget.h \
+    $$PWD/windowframelesshelper.h
+
 
 SOURCES += \
     $$PWD/keepratiowidget.cpp \
-    $$PWD/magneticwidget.cpp
+    $$PWD/magneticwidget.cpp \
+    $$PWD/windowframelesshelper.cpp
diff --git a/QtScrcpy/uibase/windowframelesshelper.cpp b/QtScrcpy/uibase/windowframelesshelper.cpp
new file mode 100644
index 0000000..70dfb6d
--- /dev/null
+++ b/QtScrcpy/uibase/windowframelesshelper.cpp
@@ -0,0 +1,254 @@
+#include "windowframelesshelper.h"
+
+#if defined(Q_OS_WIN)
+#include <QCursor>
+#include <QDebug>
+#include <QGuiApplication>
+#include <windows.h>
+#include <windowsx.h>
+
+WindowFramelessHelper::WindowFramelessHelper() {}
+
+WindowFramelessHelper::~WindowFramelessHelper()
+{
+    // do nothing, because this object is static instance
+}
+
+WindowFramelessHelper *WindowFramelessHelper::Instance()
+{
+    static WindowFramelessHelper g_windowNativeEventFilter;
+    return &g_windowNativeEventFilter;
+}
+
+void WindowFramelessHelper::Init()
+{
+    if (!m_inited) {
+        m_inited = true;
+        QGuiApplication::instance()->installNativeEventFilter(this);
+    }
+}
+
+bool WindowFramelessHelper::nativeEventFilter(const QByteArray &eventType, void *message, long *result)
+{
+    Q_UNUSED(eventType);
+
+    MSG *param = static_cast<MSG *>(message);
+    if (!param) {
+        return false;
+    }
+
+    switch (param->message) {
+    case WM_NCHITTEST: {
+        if (processNcHitTest(message, result)) {
+            return true;
+        }
+    } break;
+    case WM_NCLBUTTONDOWN: {
+        if (processNcLButtonDown(message, result)) {
+            return true;
+        }
+    } break;
+    case WM_SETCURSOR: {
+        if (processSetCursor(message, result)) {
+            return true;
+        }
+    } break;
+    default:
+        break;
+    }
+
+    return false;
+}
+
+bool WindowFramelessHelper::processNcHitTest(void *message, long *result)
+{
+    MSG *param = static_cast<MSG *>(message);
+    if (!param) {
+        return false;
+    }
+
+    QWindow *window = getWindow((WId)param->hwnd);
+    if (!window) {
+        return false;
+    }
+
+    // 没有最大化&全屏按钮，则认为是固定尺寸窗口
+    if (!(window->flags() & Qt::WindowMaximizeButtonHint) && !(window->flags() & Qt::WindowFullscreenButtonHint)) {
+        return false;
+    }
+
+    qreal dpi = window->devicePixelRatio();
+    if (dpi <= 0.99) {
+        dpi = 1.0;
+    }
+
+    QPoint ptCursor = QCursor::pos();
+    int nX = ptCursor.x() - window->geometry().x();
+    int nY = ptCursor.y() - window->geometry().y();
+
+    *result = HTCLIENT;
+
+    if (Qt::WindowMaximized == window->windowState()) {
+        return false;
+    }
+
+    if ((window->windowStates() & Qt::WindowMaximized) || (window->windowStates() & Qt::WindowFullScreen)) {
+        return false;
+    }
+
+    qDebug() << "processNcHitTest:" << ptCursor << window->geometry() << "d:" << nX;
+    int borderWidth = 5;
+    if ((nX > m_windowMargin.left()) && (nX < m_windowMargin.left() + borderWidth) && (nY > m_windowMargin.top())
+        && (nY < m_windowMargin.top() + borderWidth)) {
+        *result = HTTOPLEFT;
+    } else if (
+        (nX > window->width() - m_windowMargin.right() - borderWidth) && (nX < window->width() - m_windowMargin.right()) && (nY > m_windowMargin.top())
+        && (nY < m_windowMargin.top() + borderWidth)) {
+        *result = HTTOPRIGHT;
+    } else if (
+        (nX > m_windowMargin.left()) && (nX < m_windowMargin.left() + borderWidth) && (nY > window->height() - m_windowMargin.bottom() - borderWidth)
+        && (nY < window->height() - m_windowMargin.bottom())) {
+        *result = HTBOTTOMLEFT;
+    } else if (
+        (nX > window->width() - m_windowMargin.right() - borderWidth) && (nX < window->width() - m_windowMargin.right())
+        && (nY > window->height() - m_windowMargin.bottom() - borderWidth) && (nY < window->height() - m_windowMargin.bottom())) {
+        *result = HTBOTTOMRIGHT;
+    } else if ((nX > m_windowMargin.left()) && (nX < m_windowMargin.left() + borderWidth)) {
+        *result = HTLEFT;
+    } else if ((nX > window->width() - m_windowMargin.right() - borderWidth) && (nX < window->width() - m_windowMargin.right())) {
+        *result = HTRIGHT;
+    } else if ((nY > m_windowMargin.top()) && (nY < m_windowMargin.top() + borderWidth)) {
+        *result = HTTOP;
+    } else if ((nY > window->height() - m_windowMargin.bottom() - borderWidth) && (nY < window->height() - m_windowMargin.bottom())) {
+        *result = HTBOTTOM;
+    }
+
+    return true;
+}
+
+bool WindowFramelessHelper::processNcLButtonDown(void *message, long *result)
+{
+    Q_UNUSED(result);
+
+    MSG *param = static_cast<MSG *>(message);
+    if (!param) {
+        return false;
+    }
+
+    QWindow *window = getWindow((WId)param->hwnd);
+    if (!window) {
+        return false;
+    }
+
+    if (!(window->flags() & Qt::WindowMaximizeButtonHint) && !(window->flags() & Qt::WindowFullscreenButtonHint)) {
+        return false;
+    }
+
+    if ((window->windowStates() & Qt::WindowMaximized) || (window->windowStates() & Qt::WindowFullScreen)) {
+        return false;
+    }
+
+    HWND hwnd = param->hwnd;
+    WPARAM nHitTest = param->wParam;
+    if (nHitTest == HTTOP) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_TOP, param->lParam);
+    } else if (nHitTest == HTBOTTOM) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_BOTTOM, param->lParam);
+    } else if (nHitTest == HTLEFT) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_LEFT, param->lParam);
+    } else if (nHitTest == HTRIGHT) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_RIGHT, param->lParam);
+    } else if (nHitTest == HTTOPLEFT) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_TOPLEFT, param->lParam);
+    } else if (nHitTest == HTTOPRIGHT) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_TOPRIGHT, param->lParam);
+    } else if (nHitTest == HTBOTTOMLEFT) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_BOTTOMLEFT, param->lParam);
+    } else if (nHitTest == HTBOTTOMRIGHT) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_SIZE | WMSZ_BOTTOMRIGHT, param->lParam);
+    } else if (nHitTest == HTCAPTION) {
+        ::PostMessage(hwnd, WM_SYSCOMMAND, SC_MOVE + 1, 0);
+    }
+
+    return false;
+}
+
+bool WindowFramelessHelper::processSetCursor(void *message, long *result)
+{
+    Q_UNUSED(result);
+
+    MSG *param = static_cast<MSG *>(message);
+    if (!param) {
+        return false;
+    }
+
+    QWindow *window = getWindow((WId)param->hwnd);
+    if (!window) {
+        return false;
+    }
+
+    if (!(window->flags() & Qt::WindowMaximizeButtonHint) && !(window->flags() & Qt::WindowFullscreenButtonHint)) {
+        return false;
+    }
+
+    if ((window->windowStates() & Qt::WindowMaximized) || (window->windowStates() & Qt::WindowFullScreen)) {
+        return false;
+    }
+
+    // is invisible window
+    HWND hwnd = param->hwnd;
+    if (!::IsWindowVisible(hwnd)) {
+        return true;
+    }
+
+    // is not enabled window
+    if (!::IsWindowEnabled(hwnd)) {
+        return true;
+    }
+
+    // set cursor
+    HCURSOR hCursor = nullptr;
+    LPARAM hittest = LOWORD(param->lParam);
+    switch (hittest) {
+    case HTRIGHT:
+    case HTLEFT:
+        hCursor = LoadCursor(nullptr, IDC_SIZEWE);
+        break;
+    case HTTOP:
+    case HTBOTTOM:
+        hCursor = LoadCursor(nullptr, IDC_SIZENS);
+        break;
+    case HTTOPLEFT:
+    case HTBOTTOMRIGHT:
+        hCursor = LoadCursor(nullptr, IDC_SIZENWSE);
+        break;
+    case HTTOPRIGHT:
+    case HTBOTTOMLEFT:
+        hCursor = LoadCursor(nullptr, IDC_SIZENESW);
+        break;
+    default:
+        break;
+    }
+
+    if (!hCursor) {
+        return false;
+    }
+
+    ::SetCursor(hCursor);
+    ::DestroyCursor(hCursor);
+
+    return true;
+}
+
+QWindow *WindowFramelessHelper::getWindow(WId wndId)
+{
+    QWindowList windows = QGuiApplication::topLevelWindows();
+    for (int i = 0; i < windows.size(); ++i) {
+        if (windows.at(i)->winId() == wndId) {
+            return windows.at(i);
+        }
+    }
+    return nullptr;
+}
+
+#endif //(Q_OS_WIN)
diff --git a/QtScrcpy/uibase/windowframelesshelper.h b/QtScrcpy/uibase/windowframelesshelper.h
new file mode 100644
index 0000000..0b93228
--- /dev/null
+++ b/QtScrcpy/uibase/windowframelesshelper.h
@@ -0,0 +1,32 @@
+#pragma once
+#include <QWindow>
+
+#if defined(Q_OS_WIN)
+#include <QAbstractNativeEventFilter>
+#include <QMargins>
+
+class WindowFramelessHelper : public QAbstractNativeEventFilter
+{
+protected:
+    WindowFramelessHelper();
+    ~WindowFramelessHelper() override;
+
+public:
+    static WindowFramelessHelper *Instance();
+
+    void Init();
+    bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override;
+
+private:
+    bool processNcHitTest(void *message, long *result);
+    bool processNcLButtonDown(void *message, long *result);
+    bool processSetCursor(void *message, long *result);
+
+    QWindow *getWindow(WId wndId);
+
+private:
+    bool m_inited = false;
+    QMargins m_windowMargin = QMargins(0, 0, 0, 0);
+};
+
+#endif // Q_OS_WIN