diff --git a/main_unix.cpp b/main_unix.cpp
index 482b2c0..4136861 100644
--- a/main_unix.cpp
+++ b/main_unix.cpp
@@ -1,7 +1,20 @@
 #include "framelesshelper.h"
 #include <QApplication>
+#include <QScreen>
 #include <QWidget>
 
+static void moveWindowToDesktopCenter(QWidget *const widget) {
+    if (widget) {
+        const QRect sg = widget->screen()->geometry();
+        const int sw = sg.width();
+        const int sh = sg.height();
+        const int ww = widget->width();
+        const int wh = widget->height();
+        widget->move(qRound(static_cast<qreal>(sw - ww) / 2.0),
+                     qRound(static_cast<qreal>(sh - wh) / 2.0));
+    }
+}
+
 int main(int argc, char *argv[]) {
     // High DPI scaling is enabled by default from Qt 6
 #if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
@@ -27,6 +40,8 @@ int main(int argc, char *argv[]) {
 
     QWidget widget;
     helper.removeWindowFrame(&widget);
+    widget.resize(800, 600);
+    moveWindowToDesktopCenter(&widget);
     widget.show();
 
     return QApplication::exec();
diff --git a/main_windows.cpp b/main_windows.cpp
index 8db3f52..26063fa 100644
--- a/main_windows.cpp
+++ b/main_windows.cpp
@@ -132,16 +132,19 @@ int main(int argc, char *argv[]) {
     mainLayout->addLayout(tbLayout);
     mainLayout->addStretch();
     widget.setLayout(mainLayout);
-    WinNativeEventFilter::WINDOWDATA data_widget;
-    data_widget.ignoreObjects << minimizeButton << maximizeButton
-                              << closeButton;
     const auto hWnd_widget = reinterpret_cast<HWND>(widget.winId());
+    WinNativeEventFilter::addFramelessWindow(hWnd_widget);
+    const auto data_widget = WinNativeEventFilter::windowData(hWnd_widget);
+    if (data_widget) {
+        data_widget->ignoreObjects << minimizeButton << maximizeButton
+                                   << closeButton;
+    }
     const int tbh_widget = WinNativeEventFilter::getSystemMetric(
         hWnd_widget, WinNativeEventFilter::SystemMetric::TitleBarHeight, false);
     updateQtFrame(widget.windowHandle(),
                   (tbh_widget > 0 ? tbh_widget : m_defaultTitleBarHeight));
     widget.resize(800, 600);
-    WinNativeEventFilter::addFramelessWindow(hWnd_widget, &data_widget, true);
+    WinNativeEventFilter::moveWindowToDesktopCenter(hWnd_widget);
     widget.show();
 
 #ifdef QT_QUICK_LIB
@@ -151,18 +154,17 @@ int main(int argc, char *argv[]) {
     const int tbh_qml_sys = WinNativeEventFilter::getSystemMetric(
         hWnd_qml, WinNativeEventFilter::SystemMetric::TitleBarHeight, false);
     const int tbh_qml = tbh_qml_sys > 0 ? tbh_qml_sys : m_defaultTitleBarHeight;
-    updateQtFrame(&view, tbh_qml);
     view.rootContext()->setContextProperty(QString::fromUtf8("$TitleBarHeight"),
                                            tbh_qml);
     view.setSource(QUrl(QString::fromUtf8("qrc:///qml/main.qml")));
     QObject::connect(
         &view, &MyQuickView::windowSizeChanged, [hWnd_qml](const QSize &size) {
-            const auto data = WinNativeEventFilter::windowData(hWnd_qml);
-            if (data) {
+            const auto data_qml = WinNativeEventFilter::windowData(hWnd_qml);
+            if (data_qml) {
                 const int tbh_qml = WinNativeEventFilter::getSystemMetric(
                     hWnd_qml,
                     WinNativeEventFilter::SystemMetric::TitleBarHeight, false);
-                data->draggableAreas = {
+                data_qml->draggableAreas = {
                     {0, 0, (size.width() - (m_defaultButtonWidth * 3)),
                      tbh_qml}};
             }
@@ -179,8 +181,10 @@ int main(int argc, char *argv[]) {
                      SLOT(showNormal()));
     QObject::connect(rootObject, SIGNAL(closeButtonClicked()), &view,
                      SLOT(close()));
+    WinNativeEventFilter::addFramelessWindow(hWnd_qml);
+    updateQtFrame(&view, tbh_qml);
     view.resize(800, 600);
-    WinNativeEventFilter::addFramelessWindow(hWnd_qml, nullptr, true);
+    WinNativeEventFilter::moveWindowToDesktopCenter(hWnd_qml);
     view.show();
 #endif
 
diff --git a/winnativeeventfilter.cpp b/winnativeeventfilter.cpp
index 1a96036..68efed1 100644
--- a/winnativeeventfilter.cpp
+++ b/winnativeeventfilter.cpp
@@ -1358,15 +1358,12 @@ bool WinNativeEventFilter::nativeEventFilter(const QByteArray &eventType,
                     return HTCLIENT;
                 }
                 const bool isTop = (mouse.y <= bh) && isResizePermitted;
-                const bool isBottom =
-                    (mouse.y >= (wh - bh)) && isResizePermitted;
+                const bool isBottom = (mouse.y >= (wh - bh));
                 // Make the border a little wider to let the user easy to resize
                 // on corners.
                 const int factor = (isTop || isBottom) ? 2 : 1;
-                const bool isLeft =
-                    (mouse.x <= (bw * factor)) && isResizePermitted;
-                const bool isRight =
-                    (mouse.x >= (ww - (bw * factor))) && isResizePermitted;
+                const bool isLeft = (mouse.x <= (bw * factor));
+                const bool isRight = (mouse.x >= (ww - (bw * factor)));
                 const bool fixedSize = _data->windowData.fixedSize;
                 const auto getBorderValue = [fixedSize](int value) -> int {
                     // HTBORDER: non-resizeable window border.