diff --git a/src/FluFrameless.cpp b/src/FluFrameless.cpp
index e04eb237..8240bc0e 100644
--- a/src/FluFrameless.cpp
+++ b/src/FluFrameless.cpp
@@ -46,11 +46,13 @@ bool FramelessEventFilter::nativeEventFilter(const QByteArray &eventType, void *
         }
         return false;
     }else if(uMsg == WM_NCCALCSIZE){
+#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
         NCCALCSIZE_PARAMS& sz = *reinterpret_cast<NCCALCSIZE_PARAMS*>(msg->lParam);
         if (sz.rgrc[0].top != 0)
             sz.rgrc[0].top -= 1;
         *result = WVR_REDRAW;
         return true;
+#endif
     }
     return false;
 #endif
@@ -163,6 +165,7 @@ void FluFrameless::componentComplete(){
         HWND hWnd = reinterpret_cast<HWND>(_window->winId());
         ULONG_PTR cNewStyle = GetClassLongPtr(hWnd, GCL_STYLE) | CS_DROPSHADOW;
         SetClassLongPtr(hWnd, GCL_STYLE, cNewStyle);
+        SetWindowPos(hWnd,nullptr,0,0,0,0,SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_NOMOVE | SWP_NOSIZE |SWP_FRAMECHANGED);
 #endif
     }
 }
diff --git a/src/Qt5/imports/FluentUI/Controls/FluWindow.qml b/src/Qt5/imports/FluentUI/Controls/FluWindow.qml
index 581bf25b..84f0c7e5 100644
--- a/src/Qt5/imports/FluentUI/Controls/FluWindow.qml
+++ b/src/Qt5/imports/FluentUI/Controls/FluWindow.qml
@@ -70,6 +70,7 @@ Window {
         }
         lifecycle.onCompleted(window)
         initArgument(argument)
+        moveWindowToDesktopCenter()
         if(window.autoMaximize){
             window.showMaximized()
         }else{
@@ -248,6 +249,15 @@ Window {
             }
             return true
         }
+        Rectangle{
+            color: parent.border.color
+            width: parent.width
+            height: 1
+            anchors{
+                top: parent.top
+                topMargin: 1
+            }
+        }
     }
     function destoryOnClose(){
         lifecycle.onDestoryOnClose()
@@ -275,6 +285,9 @@ Window {
     function registerForWindowResult(path){
         return lifecycle.createRegister(window,path)
     }
+    function moveWindowToDesktopCenter(){
+        window.setGeometry((Screen.width-window.width)/2+Screen.virtualX,(Screen.height-window.height)/2+Screen.virtualY,window.width,window.height)
+    }
     function onResult(data){
         if(_pageRegister){
             _pageRegister.onResult(data)
diff --git a/src/Qt6/imports/FluentUI/Controls/FluWindow.qml b/src/Qt6/imports/FluentUI/Controls/FluWindow.qml
index 1500b7a5..57c20e8e 100644
--- a/src/Qt6/imports/FluentUI/Controls/FluWindow.qml
+++ b/src/Qt6/imports/FluentUI/Controls/FluWindow.qml
@@ -69,6 +69,7 @@ Window {
         }
         lifecycle.onCompleted(window)
         initArgument(argument)
+        moveWindowToDesktopCenter()
         if(window.autoMaximize){
             window.showMaximized()
         }else{
@@ -274,6 +275,9 @@ Window {
     function registerForWindowResult(path){
         return lifecycle.createRegister(window,path)
     }
+    function moveWindowToDesktopCenter(){
+        window.setGeometry((Screen.width-window.width)/2+Screen.virtualX,(Screen.height-window.height)/2+Screen.virtualY,window.width,window.height)
+    }
     function onResult(data){
         if(_pageRegister){
             _pageRegister.onResult(data)