sola/qwindowkit.git

			@@ -10,8 +10,6 @@
			#include <QtGui/QPalette>
			#include <QtGui/QStyleHints>

			#include <QtCore/private/qwinregistry_p.h>
			#include <QtCore/private/qsystemlibrary_p.h>
			#include <QtGui/private/qhighdpiscaling_p.h>
			#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
			# include <QtGui/private/qguiapplication_p.h>
			@@ -23,44 +21,16 @@
			# include <QtGui/qpa/qplatformwindow_p.h>
			#endif

			#include <shellscalingapi.h>
			#include <dwmapi.h>
			#include <timeapi.h>
			#include <QWKCore/qwkconfig.h>

			#include "qwkglobal_p.h"
			#include "qwkwindowsextra_p.h"

			#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
			Q_DECLARE_METATYPE(QMargins)
			#endif

			namespace QWK {

			enum _DWMWINDOWATTRIBUTE {
			// [set] BOOL, Allows the use of host backdrop brushes for the window.
			_DWMWA_USE_HOSTBACKDROPBRUSH = 17,

			// Undocumented, the same with DWMWA_USE_IMMERSIVE_DARK_MODE, but available on systems
			// before Win10 20H1.
			_DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1 = 19,

			// [set] BOOL, Allows a window to either use the accent color, or dark, according to the
			// user Color Mode preferences.
			_DWMWA_USE_IMMERSIVE_DARK_MODE = 20,

			// [set] WINDOW_CORNER_PREFERENCE, Controls the policy that rounds top-level window corners
			_DWMWA_WINDOW_CORNER_PREFERENCE = 33,

			// [get] UINT, width of the visible border around a thick frame window
			_DWMWA_VISIBLE_FRAME_BORDER_THICKNESS = 37,

			// [get, set] SYSTEMBACKDROP_TYPE, Controls the system-drawn backdrop material of a window,
			// including behind the non-client area.
			_DWMWA_SYSTEMBACKDROP_TYPE = 38,

			// Undocumented, use this value to enable Mica material on Win11 21H2. You should use
			// DWMWA_SYSTEMBACKDROP_TYPE instead on Win11 22H2 and newer.
			_DWMWA_MICA_EFFECT = 1029
			};

			// The thickness of an auto-hide taskbar in pixels.
			static constexpr const quint8 kAutoHideTaskBarThickness = 2;
			@@ -78,251 +48,6 @@

			// Original Qt window proc function
			static WNDPROC g_qtWindowProc = nullptr;

			struct DynamicApis {
			static const DynamicApis &instance() {
			static const DynamicApis inst{};
			return inst;
			}

			// template <typename T>
			// struct DefaultFunc;
			//
			// template <typename Return, typename... Args>
			// struct DefaultFunc<Return(QT_WIN_CALLBACK *)(Args...)> {
			// static Return STDAPICALLTYPE func(Args...) {
			// return Return{};
			// }
			// };
			//
			// #define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME =
			// DefaultFunc<decltype(&::NAME)>::func

			#define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME = nullptr

			DYNAMIC_API_DECLARE(DwmFlush);
			DYNAMIC_API_DECLARE(DwmIsCompositionEnabled);
			DYNAMIC_API_DECLARE(DwmGetCompositionTimingInfo);
			DYNAMIC_API_DECLARE(DwmGetWindowAttribute);
			DYNAMIC_API_DECLARE(DwmSetWindowAttribute);
			DYNAMIC_API_DECLARE(GetDpiForWindow);
			DYNAMIC_API_DECLARE(GetSystemMetricsForDpi);
			DYNAMIC_API_DECLARE(GetDpiForMonitor);
			DYNAMIC_API_DECLARE(timeGetDevCaps);
			DYNAMIC_API_DECLARE(timeBeginPeriod);
			DYNAMIC_API_DECLARE(timeEndPeriod);

			#undef DYNAMIC_API_DECLARE

			private:
			DynamicApis() {
			#define DYNAMIC_API_RESOLVE(DLL, NAME) \
			p##NAME = reinterpret_cast<decltype(p##NAME)>(DLL.resolve(#NAME))

			QSystemLibrary user32(QStringLiteral("user32"));
			DYNAMIC_API_RESOLVE(user32, GetDpiForWindow);
			DYNAMIC_API_RESOLVE(user32, GetSystemMetricsForDpi);

			QSystemLibrary shcore(QStringLiteral("shcore"));
			DYNAMIC_API_RESOLVE(shcore, GetDpiForMonitor);

			QSystemLibrary dwmapi(QStringLiteral("dwmapi"));
			DYNAMIC_API_RESOLVE(dwmapi, DwmFlush);
			DYNAMIC_API_RESOLVE(dwmapi, DwmIsCompositionEnabled);
			DYNAMIC_API_RESOLVE(dwmapi, DwmGetCompositionTimingInfo);
			DYNAMIC_API_RESOLVE(dwmapi, DwmGetWindowAttribute);
			DYNAMIC_API_RESOLVE(dwmapi, DwmSetWindowAttribute);

			QSystemLibrary winmm(QStringLiteral("winmm"));
			DYNAMIC_API_RESOLVE(winmm, timeGetDevCaps);
			DYNAMIC_API_RESOLVE(winmm, timeBeginPeriod);
			DYNAMIC_API_RESOLVE(winmm, timeEndPeriod);

			#undef DYNAMIC_API_RESOLVE
			}

			~DynamicApis() = default;

			Q_DISABLE_COPY_MOVE(DynamicApis)
			};

			static inline constexpr bool operator==(const POINT &lhs, const POINT &rhs) noexcept {
			return ((lhs.x == rhs.x) && (lhs.y == rhs.y));
			}

			static inline constexpr bool operator!=(const POINT &lhs, const POINT &rhs) noexcept {
			return !operator==(lhs, rhs);
			}

			static inline constexpr bool operator==(const SIZE &lhs, const SIZE &rhs) noexcept {
			return ((lhs.cx == rhs.cx) && (lhs.cy == rhs.cy));
			}

			static inline constexpr bool operator!=(const SIZE &lhs, const SIZE &rhs) noexcept {
			return !operator==(lhs, rhs);
			}

			static inline constexpr bool operator>(const SIZE &lhs, const SIZE &rhs) noexcept {
			return ((lhs.cx * lhs.cy) > (rhs.cx * rhs.cy));
			}

			static inline constexpr bool operator>=(const SIZE &lhs, const SIZE &rhs) noexcept {
			return (operator>(lhs, rhs) \|\| operator==(lhs, rhs));
			}

			static inline constexpr bool operator<(const SIZE &lhs, const SIZE &rhs) noexcept {
			return (operator!=(lhs, rhs) && !operator>(lhs, rhs));
			}

			static inline constexpr bool operator<=(const SIZE &lhs, const SIZE &rhs) noexcept {
			return (operator<(lhs, rhs) \|\| operator==(lhs, rhs));
			}

			static inline constexpr bool operator==(const RECT &lhs, const RECT &rhs) noexcept {
			return ((lhs.left == rhs.left) && (lhs.top == rhs.top) && (lhs.right == rhs.right) &&
			(lhs.bottom == rhs.bottom));
			}

			static inline constexpr bool operator!=(const RECT &lhs, const RECT &rhs) noexcept {
			return !operator==(lhs, rhs);
			}

			static inline constexpr QPoint point2qpoint(const POINT &point) {
			return QPoint{int(point.x), int(point.y)};
			}

			static inline constexpr POINT qpoint2point(const QPoint &point) {
			return POINT{LONG(point.x()), LONG(point.y())};
			}

			static inline constexpr QSize size2qsize(const SIZE &size) {
			return QSize{int(size.cx), int(size.cy)};
			}

			static inline constexpr SIZE qsize2size(const QSize &size) {
			return SIZE{LONG(size.width()), LONG(size.height())};
			}

			static inline constexpr QRect rect2qrect(const RECT &rect) {
			return QRect{
			QPoint{int(rect.left), int(rect.top) },
			QSize{int(RECT_WIDTH(rect)), int(RECT_HEIGHT(rect))}
			};
			}

			static inline constexpr RECT qrect2rect(const QRect &qrect) {
			return RECT{LONG(qrect.left()), LONG(qrect.top()), LONG(qrect.right()),
			LONG(qrect.bottom())};
			}

			static inline /constexpr/ QString hwnd2str(const WId windowId) {
			// NULL handle is allowed here.
			return QLatin1String("0x") +
			QString::number(windowId, 16).toUpper().rightJustified(8, u'0');
			}

			static inline /constexpr/ QString hwnd2str(HWND hwnd) {
			// NULL handle is allowed here.
			return hwnd2str(reinterpret_cast<WId>(hwnd));
			}

			static inline bool isWin8OrGreater() {
			static const bool result = IsWindows8OrGreater_Real();
			return result;
			}

			static inline bool isWin8Point1OrGreater() {
			static const bool result = IsWindows8Point1OrGreater_Real();
			return result;
			}

			static inline bool isWin10OrGreater() {
			static const bool result = IsWindows10OrGreater_Real();
			return result;
			}

			static inline bool isWin11OrGreater() {
			static const bool result = IsWindows11OrGreater_Real();
			return result;
			}

			static inline bool isDwmCompositionEnabled() {
			if (isWin8OrGreater()) {
			return true;
			}
			const DynamicApis &apis = DynamicApis::instance();
			if (!apis.pDwmIsCompositionEnabled) {
			return false;
			}
			BOOL enabled = FALSE;
			return SUCCEEDED(apis.pDwmIsCompositionEnabled(&enabled)) && enabled;
			}

			static inline bool isWindowFrameBorderColorized() {
			const QWinRegistryKey registry(HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\DWM)");
			if (!registry.isValid()) {
			return false;
			}
			const auto value = registry.dwordValue(L"ColorPrevalence");
			if (!value.second) {
			return false;
			}
			return value.first;
			}

			static inline bool isDarkThemeActive() {
			#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
			return QGuiApplication::styleHints()->colorScheme() == Qt::ColorScheme::Dark;
			#else
			const QWinRegistryKey registry(
			HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\CurrentVersion\Themes\Personalize)");
			if (!registry.isValid()) {
			return false;
			}
			const auto value = registry.dwordValue(L"AppsUseLightTheme");
			if (!value.second) {
			return false;
			}
			return !value.first;
			#endif
			}

			static inline bool isDarkWindowFrameEnabled(HWND hwnd) {
			BOOL enabled = FALSE;
			const DynamicApis &apis = DynamicApis::instance();
			if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE, &enabled,
			sizeof(enabled)))) {
			return enabled;
			} else if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd,
			_DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1,
			&enabled, sizeof(enabled)))) {
			return enabled;
			} else {
			return false;
			}
			}

			static inline QColor getAccentColor() {
			#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
			return QGuiApplication::palette().color(QPalette::Accent);
			#else
			const QWinRegistryKey registry(HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\DWM)");
			if (!registry.isValid()) {
			return {};
			}
			const auto value = registry.dwordValue(L"AccentColor");
			if (!value.second) {
			return {};
			}
			// The retrieved value is in the #AABBGGRR format, we need to
			// convert it to the #AARRGGBB format which Qt expects.
			const QColor abgr = QColor::fromRgba(value.first);
			if (!abgr.isValid()) {
			return {};
			}
			return QColor::fromRgb(abgr.blue(), abgr.green(), abgr.red(), abgr.alpha());
			#endif
			}

			static inline void triggerFrameChange(HWND hwnd) {
			::SetWindowPos(hwnd, nullptr, 0, 0, 0, 0,
			@@ -379,16 +104,7 @@
			getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
			}

			static void updateInternalWindowFrameMargins(HWND hwnd, QWindow *window) {
			const auto margins = [hwnd]() -> QMargins {
			const auto titleBarHeight = int(getTitleBarHeight(hwnd));
			if (isWin10OrGreater()) {
			return {0, -titleBarHeight, 0, 0};
			} else {
			const auto frameSize = int(getResizeBorderThickness(hwnd));
			return {-frameSize, -titleBarHeight, -frameSize, -frameSize};
			}
			}();
			static void setInternalWindowFrameMargins(QWindow *window, const QMargins &margins) {
			const QVariant marginsVar = QVariant::fromValue(margins);
			window->setProperty("_q_windowsCustomMargins", marginsVar);
			#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
			@@ -829,7 +545,20 @@
			return ::CallWindowProcW(g_qtWindowProc, hWnd, message, wParam, lParam);
			}

			static inline void addManagedWindow(HWND hWnd, Win32WindowContext *ctx) {
			static inline void addManagedWindow(QWindow window, HWND hWnd, Win32WindowContext ctx) {
			const auto margins = [hWnd]() -> QMargins {
			const auto titleBarHeight = int(getTitleBarHeight(hWnd));
			if (isWin10OrGreater()) {
			return {0, -titleBarHeight, 0, 0};
			} else {
			const auto frameSize = int(getResizeBorderThickness(hWnd));
			return {-frameSize, -titleBarHeight, -frameSize, -frameSize};
			}
			}();

			// Inform Qt we want and have set custom margins
			setInternalWindowFrameMargins(window, margins);

			// Store original window proc
			if (!g_qtWindowProc) {
			g_qtWindowProc = reinterpret_cast<WNDPROC>(::GetWindowLongPtrW(hWnd, GWLP_WNDPROC));
			@@ -872,18 +601,24 @@
			void Win32WindowContext::virtual_hook(int id, void *data) {
			switch (id) {
			case CentralizeHook: {
			if (!windowId)
			return;
			const auto hwnd = reinterpret_cast<HWND>(windowId);
			moveWindowToDesktopCenter(hwnd);
			return;
			}

			case RaiseWindowHook: {
			if (!windowId)
			return;
			const auto hwnd = reinterpret_cast<HWND>(windowId);
			bringWindowToFront(hwnd);
			return;
			}

			case ShowSystemMenuHook: {
			if (!windowId)
			return;
			const auto &pos = static_cast<const QPoint >(data);
			auto hWnd = reinterpret_cast<HWND>(windowId);
			#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
			@@ -894,23 +629,6 @@
			#endif
			showSystemMenu2(hWnd, qpoint2point(nativeGlobalPos), false,
			m_delegate->isHostSizeFixed(m_host));
			return;
			}

			case WindowAttributeChangedHook: {
			auto args = static_cast<void **>(data);
			const auto &key = static_cast<const QString >(args[0]);
			const auto &newVar = static_cast<const QVariant >(args[1]);
			const auto &oldVar = static_cast<const QVariant >(args[2]);

			if (key == QStringLiteral("no-frame-shadow")) {
			if (newVar.toBool()) {
			// TODO: set off
			} else {
			// TODO: set on
			}
			}

			return;
			}

			@@ -925,6 +643,9 @@
			}

			case DrawWindows10BorderHook: {
			if (!windowId)
			return;

			auto args = static_cast<void **>(data);
			auto &painter = static_cast<QPainter >(args[0]);
			const auto &rect = static_cast<const QRect >(args[1]);
			@@ -964,9 +685,8 @@
			return;
			}

			default: {
			default:
			break;
			}
			}
			AbstractWindowContext::virtual_hook(id, data);
			}
			@@ -979,8 +699,13 @@
			return getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId));
			}

			void Win32WindowContext::winIdChanged(QWindow *oldWindow) {
			removeManagedWindow(reinterpret_cast<HWND>(windowId));
			void Win32WindowContext::winIdChanged() {
			// If the original window id is valid, remove all resources related
			if (windowId) {
			removeManagedWindow(reinterpret_cast<HWND>(windowId));
			windowId = 0;
			}

			if (!m_windowHandle) {
			return;
			}
			@@ -988,6 +713,21 @@
			// Install window hook
			auto winId = m_windowHandle->winId();
			auto hWnd = reinterpret_cast<HWND>(winId);

			#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
			if (!isWin10OrGreater())
			#endif
			{
			static constexpr const MARGINS margins = {1, 1, 1, 1};
			DynamicApis::instance().pDwmExtendFrameIntoClientArea(hWnd, &margins);
			}

			#if !QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
			{
			auto style = ::GetWindowLongPtrW(hWnd, GWL_STYLE);
			::SetWindowLongPtrW(hWnd, GWL_STYLE, style \| WS_THICKFRAME \| WS_CAPTION);
			}
			#endif

			#if QT_VERSION < QT_VERSION_CHECK(6, 5, 0)
			for (const auto attr : {
			@@ -999,11 +739,8 @@
			}
			#endif

			// Inform Qt we want and have set custom margins
			updateInternalWindowFrameMargins(hWnd, m_windowHandle);

			// Add managed window
			addManagedWindow(hWnd, this);
			addManagedWindow(m_windowHandle, hWnd, this);

			// Cache win id
			windowId = winId;
			@@ -1060,6 +797,154 @@
			}
			}
			return false; // Not handled
			}

			bool Win32WindowContext::windowAttributeChanged(const QString &key, const QVariant &attribute,
			const QVariant &oldAttribute) {
			const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
			const DynamicApis &apis = DynamicApis::instance();
			static constexpr const MARGINS extendMargins = {-1, -1, -1, -1};
			static const auto defaultMargins =
			isWin10OrGreater() ? MARGINS{0, 0, 0, 0} : MARGINS{1, 1, 1, 1};
			if (key == QStringLiteral("mica")) {
			if (!isWin11OrGreater()) {
			return false;
			}
			if (attribute.toBool()) {
			// We need to extend the window frame into the whole client area to be able
			// to see the blurred window background.
			apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
			if (isWin1122H2OrGreater()) {
			// Use official DWM API to enable Mica, available since Windows 11 22H2
			// (10.0.22621).
			const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_MAINWINDOW;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
			sizeof(backdropType));
			} else {
			// Use undocumented DWM API to enable Mica, available since Windows 11
			// (10.0.22000).
			const BOOL enable = TRUE;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
			}
			} else {
			if (isWin1122H2OrGreater()) {
			const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
			sizeof(backdropType));
			} else {
			const BOOL enable = FALSE;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
			}
			apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
			}
			return true;
			} else if (key == QStringLiteral("mica-alt")) {
			if (!isWin1122H2OrGreater()) {
			return false;
			}
			if (attribute.toBool()) {
			// We need to extend the window frame into the whole client area to be able
			// to see the blurred window background.
			apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
			// Use official DWM API to enable Mica Alt, available since Windows 11 22H2
			// (10.0.22621).
			const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_TABBEDWINDOW;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
			sizeof(backdropType));
			} else {
			const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
			sizeof(backdropType));
			apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
			}
			return true;
			} else if (key == QStringLiteral("acrylic-material")) {
			if (!isWin10OrGreater()) {
			return false;
			}
			if (attribute.userType() == QMetaType::QColor) {
			// We need to extend the window frame into the whole client area to be able
			// to see the blurred window background.
			apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
			if (isWin11OrGreater()) {
			const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_TRANSIENTWINDOW;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
			sizeof(backdropType));
			} else {
			auto gradientColor = attribute.value<QColor>();

			ACCENT_POLICY policy{};
			policy.dwAccentState = ACCENT_ENABLE_ACRYLICBLURBEHIND;
			policy.dwAccentFlags = ACCENT_ENABLE_ACRYLIC_WITH_LUMINOSITY;
			// This API expects the #AABBGGRR format.
			policy.dwGradientColor =
			DWORD(qRgba(gradientColor.blue(), gradientColor.green(),
			gradientColor.red(), gradientColor.alpha()));
			WINDOWCOMPOSITIONATTRIBDATA wcad{};
			wcad.Attrib = WCA_ACCENT_POLICY;
			wcad.pvData = &policy;
			wcad.cbData = sizeof(policy);
			apis.pSetWindowCompositionAttribute(hwnd, &wcad);
			}
			} else {
			if (isWin11OrGreater()) {
			const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
			apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
			sizeof(backdropType));
			} else {
			ACCENT_POLICY policy{};
			policy.dwAccentState = ACCENT_DISABLED;
			policy.dwAccentFlags = ACCENT_NONE;
			WINDOWCOMPOSITIONATTRIBDATA wcad{};
			wcad.Attrib = WCA_ACCENT_POLICY;
			wcad.pvData = &policy;
			wcad.cbData = sizeof(policy);
			apis.pSetWindowCompositionAttribute(hwnd, &wcad);
			}
			apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
			}
			return true;
			} else if (key == QStringLiteral("dwm-blur")) {
			if (attribute.toBool()) {
			// We need to extend the window frame into the whole client area to be able
			// to see the blurred window background.
			apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
			if (isWin8OrGreater()) {
			ACCENT_POLICY policy{};
			policy.dwAccentState = ACCENT_ENABLE_BLURBEHIND;
			policy.dwAccentFlags = ACCENT_NONE;
			WINDOWCOMPOSITIONATTRIBDATA wcad{};
			wcad.Attrib = WCA_ACCENT_POLICY;
			wcad.pvData = &policy;
			wcad.cbData = sizeof(policy);
			apis.pSetWindowCompositionAttribute(hwnd, &wcad);
			} else {
			DWM_BLURBEHIND bb{};
			bb.fEnable = TRUE;
			bb.dwFlags = DWM_BB_ENABLE;
			apis.pDwmEnableBlurBehindWindow(hwnd, &bb);
			}
			} else {
			if (isWin8OrGreater()) {
			ACCENT_POLICY policy{};
			policy.dwAccentState = ACCENT_DISABLED;
			policy.dwAccentFlags = ACCENT_NONE;
			WINDOWCOMPOSITIONATTRIBDATA wcad{};
			wcad.Attrib = WCA_ACCENT_POLICY;
			wcad.pvData = &policy;
			wcad.cbData = sizeof(policy);
			apis.pSetWindowCompositionAttribute(hwnd, &wcad);
			} else {
			DWM_BLURBEHIND bb{};
			bb.fEnable = FALSE;
			bb.dwFlags = DWM_BB_ENABLE;
			apis.pDwmEnableBlurBehindWindow(hwnd, &bb);
			}
			apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
			}
			return true;
			}
			return false;
			}

			QWK_USED static constexpr const struct {
			@@ -1296,9 +1181,9 @@
			// widget to be implicitly grabbed. After the menu is closed, Windows
			// immediately sends WM_NCHITTEST, because the mouse is in the title bar
			// draggable area, the result is HTCAPTION, so when the mouse is released,
			// Windows sends WM_NCLBUTTONUP, which is a non-client area message, and it
			// Windows sends WM_NCLBUTTONUP, which is a non-client message, and it
			// will be ignored by Qt. As a consequence, QWidgetWindow can't receive a
			// mouse release messages in the client area, so the grab remains, and other
			// mouse release message in the client area, so the grab remains, and other
			// widgets cannot receive mouse events.

			// Since we didn't watch the menu window, we cannot capture any mouse
			@@ -1587,6 +1472,7 @@
			int frameSize = getResizeBorderThickness(hWnd);
			bool isTop = (nativeLocalPos.y < frameSize);

			#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
			if (isWin10OrGreater()) {
			// This will handle the left, right and bottom parts of the frame
			// because we didn't change them.
			@@ -1609,7 +1495,7 @@
			*result = (isTitleBar ? HTCAPTION : HTCLIENT);
			return true;
			}
			// At this point, we know that the cursor is inside the client area
			// At this point, we know that the cursor is inside the client area,
			// so it has to be either the little border at the top of our custom
			// title bar or the drag bar. Apparently, it must be the drag bar or
			// the little border at the top which the user can use to move or
			@@ -1629,7 +1515,9 @@
			}
			*result = HTCLIENT;
			return true;
			} else {
			} else
			#endif
			{
			if (full) {
			*result = HTCLIENT;
			return true;
			@@ -1747,11 +1635,7 @@
			// window activation state change.
			*result = ::DefWindowProcW(hWnd, WM_NCACTIVATE, wParam, -1);
			} else {
			if (wParam) {
			*result = FALSE;
			} else {
			*result = TRUE;
			}
			*result = TRUE;
			}
			return true;
			}
			@@ -1783,6 +1667,7 @@
			Q_UNUSED(message)
			Q_UNUSED(this)

			#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
			// Windows是根据这个消息的返回值来设置窗口的客户区（窗口中真正显示的内容）
			// 和非客户区（标题栏、窗口边框、菜单栏和状态栏等Windows系统自行提供的部分
			// ，不过对于Qt来说，除了标题栏和窗口边框，非客户区基本也都是自绘的）的范
			@@ -1990,6 +1875,7 @@
			}
			}
			}
			#endif
			// We should call this function only before the function returns.
			syncPaintEventWithDwm();
			// By returning WVR_REDRAW we can make the window resizing look