framelesshelper/src/core/utils_win.cpp

1763 lines
69 KiB
C++

/*
* MIT License
*
* Copyright (C) 2022 by wangwenx190 (Yuhang Zhao)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "utils.h"
#include <QtCore/qdebug.h>
#include <QtCore/qmutex.h>
#include <QtCore/qhash.h>
#include <QtCore/qsettings.h>
#include <QtGui/qguiapplication.h>
#include <QtGui/qpa/qplatformwindow.h>
#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
# include <QtGui/qpa/qplatformnativeinterface.h>
#else
# include <QtGui/qpa/qplatformwindow_p.h>
#endif
#include "framelessmanager.h"
#include "framelesshelper_windows.h"
#include "framelessconfig_p.h"
#include "sysapiloader_p.h"
#include <d2d1.h>
Q_DECLARE_METATYPE(QMargins)
FRAMELESSHELPER_BEGIN_NAMESPACE
using namespace Global;
struct Win32UtilsHelperData
{
WNDPROC originalWindowProc = nullptr;
IsWindowFixedSizeCallback isWindowFixedSize = nullptr;
IsInsideTitleBarDraggableAreaCallback isInTitleBarArea = nullptr;
GetWindowDevicePixelRatioCallback getDevicePixelRatio = nullptr;
};
struct Win32UtilsHelper
{
QMutex mutex;
QHash<WId, Win32UtilsHelperData> data = {};
};
Q_GLOBAL_STATIC(Win32UtilsHelper, g_utilsHelper)
static constexpr const wchar_t kDummyWindowClassName[] = L"FRAMELESSHELPER_DUMMY_WINDOW_CLASS";
static const QString qDwmColorKeyName = QString::fromWCharArray(kDwmColorKeyName);
FRAMELESSHELPER_STRING_CONSTANT2(SuccessMessageText, "The operation completed successfully.")
FRAMELESSHELPER_STRING_CONSTANT2(FormatMessageEmptyResult, "\"FormatMessageW()\" returned empty string.")
FRAMELESSHELPER_STRING_CONSTANT2(ErrorMessageTemplate, "Function \"%1()\" failed with error code %2: %3.")
FRAMELESSHELPER_STRING_CONSTANT(Composition)
FRAMELESSHELPER_STRING_CONSTANT(ColorizationColor)
FRAMELESSHELPER_STRING_CONSTANT(AppsUseLightTheme)
FRAMELESSHELPER_STRING_CONSTANT(WindowsCustomMargins)
FRAMELESSHELPER_STRING_CONSTANT(user32)
FRAMELESSHELPER_STRING_CONSTANT(dwmapi)
FRAMELESSHELPER_STRING_CONSTANT(winmm)
FRAMELESSHELPER_STRING_CONSTANT(shcore)
FRAMELESSHELPER_STRING_CONSTANT(d2d1)
FRAMELESSHELPER_STRING_CONSTANT(uxtheme)
FRAMELESSHELPER_STRING_CONSTANT(GetWindowRect)
FRAMELESSHELPER_STRING_CONSTANT(DwmIsCompositionEnabled)
FRAMELESSHELPER_STRING_CONSTANT(SetWindowPos)
FRAMELESSHELPER_STRING_CONSTANT(DwmExtendFrameIntoClientArea)
FRAMELESSHELPER_STRING_CONSTANT(DwmGetColorizationColor)
FRAMELESSHELPER_STRING_CONSTANT(PostMessageW)
FRAMELESSHELPER_STRING_CONSTANT(MonitorFromWindow)
FRAMELESSHELPER_STRING_CONSTANT(GetMonitorInfoW)
FRAMELESSHELPER_STRING_CONSTANT(GetWindowPlacement)
FRAMELESSHELPER_STRING_CONSTANT(QueryPerformanceFrequency)
FRAMELESSHELPER_STRING_CONSTANT(QueryPerformanceCounter)
FRAMELESSHELPER_STRING_CONSTANT(DwmGetCompositionTimingInfo)
FRAMELESSHELPER_STRING_CONSTANT(SystemParametersInfoW)
#ifdef Q_PROCESSOR_X86_64
FRAMELESSHELPER_STRING_CONSTANT(GetClassLongPtrW)
FRAMELESSHELPER_STRING_CONSTANT(SetClassLongPtrW)
FRAMELESSHELPER_STRING_CONSTANT(GetWindowLongPtrW)
FRAMELESSHELPER_STRING_CONSTANT(SetWindowLongPtrW)
#else // Q_PROCESSOR_X86_64
// WinUser.h defines G/SetClassLongPtr as G/SetClassLong due to the
// "Ptr" suffixed APIs are not available on 32-bit platforms, so we
// have to add the following workaround. Undefine the macros and then
// redefine them is also an option but the following solution is more simple.
FRAMELESSHELPER_STRING_CONSTANT2(GetClassLongPtrW, "GetClassLongW")
FRAMELESSHELPER_STRING_CONSTANT2(SetClassLongPtrW, "SetClassLongW")
FRAMELESSHELPER_STRING_CONSTANT2(GetWindowLongPtrW, "GetWindowLongW")
FRAMELESSHELPER_STRING_CONSTANT2(SetWindowLongPtrW, "SetWindowLongW")
#endif // Q_PROCESSOR_X86_64
FRAMELESSHELPER_STRING_CONSTANT(ReleaseCapture)
FRAMELESSHELPER_STRING_CONSTANT(SetWindowTheme)
FRAMELESSHELPER_STRING_CONSTANT(SetProcessDpiAwarenessContext)
FRAMELESSHELPER_STRING_CONSTANT(SetProcessDpiAwareness)
FRAMELESSHELPER_STRING_CONSTANT(SetProcessDPIAware)
FRAMELESSHELPER_STRING_CONSTANT(GetDpiForMonitor)
FRAMELESSHELPER_STRING_CONSTANT(MonitorFromPoint)
FRAMELESSHELPER_STRING_CONSTANT(D2D1CreateFactory)
FRAMELESSHELPER_STRING_CONSTANT(ReloadSystemMetrics)
FRAMELESSHELPER_STRING_CONSTANT(GetDC)
FRAMELESSHELPER_STRING_CONSTANT(ReleaseDC)
FRAMELESSHELPER_STRING_CONSTANT(GetDeviceCaps)
FRAMELESSHELPER_STRING_CONSTANT(DwmSetWindowAttribute)
FRAMELESSHELPER_STRING_CONSTANT(EnableMenuItem)
FRAMELESSHELPER_STRING_CONSTANT(SetMenuDefaultItem)
FRAMELESSHELPER_STRING_CONSTANT(HiliteMenuItem)
FRAMELESSHELPER_STRING_CONSTANT(TrackPopupMenu)
FRAMELESSHELPER_STRING_CONSTANT(ClientToScreen)
FRAMELESSHELPER_STRING_CONSTANT(DwmEnableBlurBehindWindow)
FRAMELESSHELPER_STRING_CONSTANT(SetWindowCompositionAttribute)
FRAMELESSHELPER_STRING_CONSTANT(GetSystemMetricsForDpi)
FRAMELESSHELPER_STRING_CONSTANT(timeGetDevCaps)
FRAMELESSHELPER_STRING_CONSTANT(timeBeginPeriod)
FRAMELESSHELPER_STRING_CONSTANT(timeEndPeriod)
FRAMELESSHELPER_STRING_CONSTANT(GetDpiForWindow)
FRAMELESSHELPER_STRING_CONSTANT(GetSystemDpiForProcess)
FRAMELESSHELPER_STRING_CONSTANT(GetDpiForSystem)
FRAMELESSHELPER_STRING_CONSTANT(DwmGetWindowAttribute)
FRAMELESSHELPER_STRING_CONSTANT(ntdll)
FRAMELESSHELPER_STRING_CONSTANT(RtlGetVersion)
FRAMELESSHELPER_STRING_CONSTANT(GetModuleHandleW)
FRAMELESSHELPER_STRING_CONSTANT(RegisterClassExW)
FRAMELESSHELPER_STRING_CONSTANT(CreateWindowExW)
FRAMELESSHELPER_STRING_CONSTANT(AccentColor)
FRAMELESSHELPER_STRING_CONSTANT(GetScaleFactorForMonitor)
struct SYSTEM_METRIC
{
int DPI_96 = 0; // 100%. The scale factor for the device is 1x.
int DPI_115 = 0; // 120%. The scale factor for the device is 1.2x.
int DPI_120 = 0; // 125%. The scale factor for the device is 1.25x.
int DPI_134 = 0; // 140%. The scale factor for the device is 1.4x.
int DPI_144 = 0; // 150%. The scale factor for the device is 1.5x.
int DPI_154 = 0; // 160%. The scale factor for the device is 1.6x.
int DPI_168 = 0; // 175%. The scale factor for the device is 1.75x.
int DPI_173 = 0; // 180%. The scale factor for the device is 1.8x.
int DPI_192 = 0; // 200%. The scale factor for the device is 2x.
int DPI_216 = 0; // 225%. The scale factor for the device is 2.25x.
int DPI_240 = 0; // 250%. The scale factor for the device is 2.5x.
int DPI_288 = 0; // 300%. The scale factor for the device is 3x.
int DPI_336 = 0; // 350%. The scale factor for the device is 3.5x.
int DPI_384 = 0; // 400%. The scale factor for the device is 4x.
int DPI_432 = 0; // 450%. The scale factor for the device is 4.5x.
int DPI_480 = 0; // 500%. The scale factor for the device is 5x.
};
static const QHash<int, SYSTEM_METRIC> g_systemMetricsTable = {
{SM_CYCAPTION, {23, 27, 29, 32, 34, 36, 40, 41, 45, 51, 56, 67, 78, 89, 100, 111}},
{SM_CXSIZEFRAME, { 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 8, 8}},
{SM_CYSIZEFRAME, { 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 8, 8}},
{SM_CXPADDEDBORDER, { 4, 5, 5, 6, 6, 6, 7, 7, 8, 9, 10, 12, 14, 16, 18, 20}}
};
template <typename T>
class HumbleComPtr
{
Q_DISABLE_COPY_MOVE(HumbleComPtr)
public:
HumbleComPtr() = default;
HumbleComPtr(std::nullptr_t ptr)
{
Q_UNUSED(ptr);
}
~HumbleComPtr()
{
if (p) {
p->Release();
p = nullptr;
}
}
[[nodiscard]] operator T*() const
{
return p;
}
[[nodiscard]] T &operator*() const
{
Q_ASSERT(p);
return *p;
}
// The assert on operator& usually indicates a bug. If this is really
// what is needed, however, take the address of the p member explicitly.
[[nodiscard]] T **operator&()
{
Q_ASSERT(false);
return &p;
}
[[nodiscard]] T *operator->() const
{
Q_ASSERT(p);
return p;
}
[[nodiscard]] bool operator!() const
{
return (p == nullptr);
}
private:
T *p = nullptr;
};
[[nodiscard]] static inline QString hkcuRegistryKey()
{
static const QString key = FRAMELESSHELPER_STRING_LITERAL("HKEY_CURRENT_USER");
return key;
}
[[nodiscard]] static inline QString dwmRegistryKey()
{
static const QString key = (hkcuRegistryKey() + u'\\' + QString::fromWCharArray(kDwmRegistryKey));
return key;
}
[[nodiscard]] static inline QString personalizeRegistryKey()
{
static const QString key = (hkcuRegistryKey() + u'\\' + QString::fromWCharArray(kPersonalizeRegistryKey));
return key;
}
[[nodiscard]] static inline HWND ensureDummyWindow()
{
static const HWND hwnd = []() -> HWND {
const HMODULE instance = GetModuleHandleW(nullptr);
if (!instance) {
qWarning() << Utils::getSystemErrorMessage(kGetModuleHandleW);
return nullptr;
}
WNDCLASSEXW wcex;
SecureZeroMemory(&wcex, sizeof(wcex));
wcex.cbSize = sizeof(wcex);
wcex.lpfnWndProc = DefWindowProcW;
wcex.hInstance = instance;
wcex.lpszClassName = kDummyWindowClassName;
const ATOM atom = RegisterClassExW(&wcex);
if (!atom) {
qWarning() << Utils::getSystemErrorMessage(kRegisterClassExW);
return nullptr;
}
const HWND window = CreateWindowExW(0, kDummyWindowClassName, nullptr,
WS_OVERLAPPEDWINDOW, 0, 0, 0, 0, nullptr, nullptr, instance, nullptr);
if (!window) {
qWarning() << Utils::getSystemErrorMessage(kCreateWindowExW);
return nullptr;
}
return window;
}();
return hwnd;
}
[[nodiscard]] static inline bool doCompareWindowsVersion(const VersionNumber &targetOsVer)
{
static const std::optional<VersionNumber> currentOsVer = []() -> std::optional<VersionNumber> {
if (API_NT_AVAILABLE(RtlGetVersion)) {
using RtlGetVersionPtr = NTSTATUS(WINAPI *)(PRTL_OSVERSIONINFOW);
const auto pRtlGetVersion =
reinterpret_cast<RtlGetVersionPtr>(SysApiLoader::instance()->get(kRtlGetVersion));
RTL_OSVERSIONINFOEXW osvi;
SecureZeroMemory(&osvi, sizeof(osvi));
osvi.dwOSVersionInfoSize = sizeof(osvi);
if (pRtlGetVersion(reinterpret_cast<PRTL_OSVERSIONINFOW>(&osvi)) == STATUS_SUCCESS) {
return VersionNumber{int(osvi.dwMajorVersion), int(osvi.dwMinorVersion), int(osvi.dwBuildNumber)};
}
}
return std::nullopt;
}();
if (currentOsVer.has_value()) {
return (currentOsVer >= targetOsVer);
}
// We can fallback to "VerifyVersionInfoW" if we can't determine the current system
// version, but this function will be affected by the manifest file of your application.
// For example, if you don't claim your application supports Windows 10 explicitly
// in the manifest file, Windows will assume your application only supports up to Windows
// 8.1, so this function will be told the current system is at most Windows 8.1, to keep
// good backward-compatiability. This behavior usually won't cause any issues if you
// always use an appropriate manifest file for your application, however, it does cause
// some issues for people who don't use the manifest file at all. There have been some
// bug reports about it already.
OSVERSIONINFOEXW osvi;
SecureZeroMemory(&osvi, sizeof(osvi));
osvi.dwOSVersionInfoSize = sizeof(osvi);
osvi.dwMajorVersion = targetOsVer.major;
osvi.dwMinorVersion = targetOsVer.minor;
osvi.dwBuildNumber = targetOsVer.patch;
DWORDLONG dwlConditionMask = 0;
const auto op = VER_GREATER_EQUAL;
VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, op);
VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, op);
VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, op);
return (VerifyVersionInfoW(&osvi, (VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER), dwlConditionMask) != FALSE);
}
[[nodiscard]] static inline QString __getSystemErrorMessage(const QString &function, const DWORD code)
{
Q_ASSERT(!function.isEmpty());
if (function.isEmpty()) {
return {};
}
if (code == ERROR_SUCCESS) {
return kSuccessMessageText;
}
LPWSTR buf = nullptr;
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), reinterpret_cast<LPWSTR>(&buf), 0, nullptr) == 0) {
return kFormatMessageEmptyResult;
}
const QString errorText = QString::fromWCharArray(buf).trimmed();
LocalFree(buf);
buf = nullptr;
return kErrorMessageTemplate.arg(function, QString::number(code), errorText);
}
[[nodiscard]] static inline QString __getSystemErrorMessage(const QString &function, const HRESULT hr)
{
Q_ASSERT(!function.isEmpty());
if (function.isEmpty()) {
return {};
}
if (SUCCEEDED(hr)) {
return kSuccessMessageText;
}
const DWORD dwError = HRESULT_CODE(hr);
return __getSystemErrorMessage(function, dwError);
}
[[nodiscard]] static inline int getSystemMetrics2(const WId windowId, const int index,
const bool horizontal, const bool scaled)
{
Q_ASSERT(windowId);
if (!windowId) {
return 0;
}
// NOTE: We deliberately don't use the "GetSystemMetrics(ForDpi)" function here,
// because in my testing process, I found in some abnormal cases it will always
// return the unscaled value (100% scale) regardless of what DPI we gave it. The
// exact reason is still unknown to me. To eliminate this uncertainty, I decided
// to return the hard-coded value directly.
// When DWM composition is disabled (only possible on Windows 7 in some rare cases),
// the thickness of the padded border will become 0.
if ((index == SM_CXPADDEDBORDER) && !Utils::isDwmCompositionEnabled()) {
return 0;
}
if (!g_systemMetricsTable.contains(index)) {
qWarning() << "FIXME: Add SYSTEM_METRIC value for index" << index;
return 0;
}
const SYSTEM_METRIC systemMetric = g_systemMetricsTable.value(index);
if (!scaled) {
return systemMetric.DPI_96;
}
const UINT dpi = Utils::getWindowDpi(windowId, horizontal);
#define DPI_CASE(x) case x: return systemMetric.DPI_##x;
switch (dpi) {
DPI_CASE(96)
DPI_CASE(115)
DPI_CASE(120)
DPI_CASE(134)
DPI_CASE(144)
DPI_CASE(154)
DPI_CASE(168)
DPI_CASE(173)
DPI_CASE(192)
DPI_CASE(216)
DPI_CASE(240)
DPI_CASE(288)
DPI_CASE(336)
DPI_CASE(384)
DPI_CASE(432)
DPI_CASE(480)
default:
qWarning() << "Unsupported DPI value:" << dpi;
return 0;
}
#undef DPI_CASE
}
[[maybe_unused]] [[nodiscard]] static inline
DWORD qtEdgesToWin32Orientation(const Qt::Edges edges)
{
if (edges == Qt::Edges{}) {
return 0;
}
if (edges == (Qt::LeftEdge)) {
return 0xF001; // SC_SIZELEFT
} else if (edges == (Qt::RightEdge)) {
return 0xF002; // SC_SIZERIGHT
} else if (edges == (Qt::TopEdge)) {
return 0xF003; // SC_SIZETOP
} else if (edges == (Qt::TopEdge | Qt::LeftEdge)) {
return 0xF004; // SC_SIZETOPLEFT
} else if (edges == (Qt::TopEdge | Qt::RightEdge)) {
return 0xF005; // SC_SIZETOPRIGHT
} else if (edges == (Qt::BottomEdge)) {
return 0xF006; // SC_SIZEBOTTOM
} else if (edges == (Qt::BottomEdge | Qt::LeftEdge)) {
return 0xF007; // SC_SIZEBOTTOMLEFT
} else if (edges == (Qt::BottomEdge | Qt::RightEdge)) {
return 0xF008; // SC_SIZEBOTTOMRIGHT
} else {
return 0xF000; // SC_SIZE
}
}
[[nodiscard]] static inline LRESULT CALLBACK SystemMenuHookWindowProc
(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM lParam)
{
Q_ASSERT(hWnd);
if (!hWnd) {
return 0;
}
const auto windowId = reinterpret_cast<WId>(hWnd);
g_utilsHelper()->mutex.lock();
if (!g_utilsHelper()->data.contains(windowId)) {
g_utilsHelper()->mutex.unlock();
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
const Win32UtilsHelperData data = g_utilsHelper()->data.value(windowId);
g_utilsHelper()->mutex.unlock();
const auto getNativePosFromMouse = [lParam]() -> QPoint {
return {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
};
const auto getNativeGlobalPosFromKeyboard = [hWnd, windowId]() -> QPoint {
RECT windowPos = {};
if (GetWindowRect(hWnd, &windowPos) == FALSE) {
qWarning() << Utils::getSystemErrorMessage(kGetWindowRect);
return {};
}
const bool maxOrFull = (IsMaximized(hWnd) || Utils::isFullScreen(windowId));
const int frameSizeX = Utils::getResizeBorderThickness(windowId, true, true);
const bool frameBorderVisible = Utils::isWindowFrameBorderVisible();
const int horizontalOffset = ((maxOrFull || !frameBorderVisible) ? 0 : frameSizeX);
const int verticalOffset = [windowId, frameBorderVisible, maxOrFull]() -> int {
const int titleBarHeight = Utils::getTitleBarHeight(windowId, true);
if (!frameBorderVisible) {
return titleBarHeight;
}
const int frameSizeY = Utils::getResizeBorderThickness(windowId, false, true);
static const bool isWin11OrGreater = Utils::isWindowsVersionOrGreater(WindowsVersion::_11_21H2);
if (isWin11OrGreater) {
if (maxOrFull) {
return (titleBarHeight + frameSizeY);
}
return titleBarHeight;
}
if (maxOrFull) {
return titleBarHeight;
}
return (titleBarHeight - frameSizeY);
}();
return {windowPos.left + horizontalOffset, windowPos.top + verticalOffset};
};
bool shouldShowSystemMenu = false;
bool broughtByKeyboard = false;
QPoint nativeGlobalPos = {};
switch (uMsg) {
case WM_RBUTTONUP: {
const QPoint nativeLocalPos = getNativePosFromMouse();
const qreal dpr = data.getDevicePixelRatio();
const QPoint qtScenePos = QPointF(QPointF(nativeLocalPos) / dpr).toPoint();
if (data.isInTitleBarArea(qtScenePos)) {
POINT pos = {nativeLocalPos.x(), nativeLocalPos.y()};
if (ClientToScreen(hWnd, &pos) == FALSE) {
qWarning() << Utils::getSystemErrorMessage(kClientToScreen);
break;
}
shouldShowSystemMenu = true;
nativeGlobalPos = {pos.x, pos.y};
}
} break;
case WM_NCRBUTTONUP: {
if (wParam == HTCAPTION) {
shouldShowSystemMenu = true;
nativeGlobalPos = getNativePosFromMouse();
}
} break;
case WM_SYSCOMMAND: {
const WPARAM filteredWParam = (wParam & 0xFFF0);
if ((filteredWParam == SC_KEYMENU) && (lParam == VK_SPACE)) {
shouldShowSystemMenu = true;
broughtByKeyboard = true;
nativeGlobalPos = getNativeGlobalPosFromKeyboard();
}
} break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN: {
const bool altPressed = ((wParam == VK_MENU) || (GetKeyState(VK_MENU) < 0));
const bool spacePressed = ((wParam == VK_SPACE) || (GetKeyState(VK_SPACE) < 0));
if (altPressed && spacePressed) {
shouldShowSystemMenu = true;
broughtByKeyboard = true;
nativeGlobalPos = getNativeGlobalPosFromKeyboard();
}
} break;
default:
break;
}
if (shouldShowSystemMenu) {
Utils::showSystemMenu(windowId, nativeGlobalPos, broughtByKeyboard, data.isWindowFixedSize);
// QPA's internal code will handle system menu events separately, and its
// behavior is not what we would want to see because it doesn't know our
// window doesn't have any window frame now, so return early here to avoid
// entering Qt's own handling logic.
return 0; // Return 0 means we have handled this event.
}
Q_ASSERT(data.originalWindowProc);
if (data.originalWindowProc) {
// Hand over to Qt's original window proc function for events we are not
// interested in.
return CallWindowProcW(data.originalWindowProc, hWnd, uMsg, wParam, lParam);
} else {
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
}
bool Utils::isWindowsVersionOrGreater(const WindowsVersion version)
{
return doCompareWindowsVersion(WindowsVersions[static_cast<int>(version)]);
}
bool Utils::isDwmCompositionEnabled()
{
// DWM composition is always enabled and can't be disabled since Windows 8.
static const bool isWin8OrGreater = isWindowsVersionOrGreater(WindowsVersion::_8);
if (isWin8OrGreater) {
return true;
}
const auto resultFromRegistry = []() -> bool {
const QSettings registry(dwmRegistryKey(), QSettings::NativeFormat);
bool ok = false;
const DWORD value = registry.value(kComposition).toULongLong(&ok);
return (ok && (value != 0));
};
if (!API_DWM_AVAILABLE(DwmIsCompositionEnabled)) {
return resultFromRegistry();
}
BOOL enabled = FALSE;
const HRESULT hr = API_CALL_FUNCTION(DwmIsCompositionEnabled, &enabled);
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmIsCompositionEnabled, hr);
return resultFromRegistry();
}
return (enabled != FALSE);
}
void Utils::triggerFrameChange(const WId windowId)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
static constexpr const UINT flags = (SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOOWNERZORDER);
if (SetWindowPos(hwnd, nullptr, 0, 0, 0, 0, flags) == FALSE) {
qWarning() << getSystemErrorMessage(kSetWindowPos);
}
}
void Utils::updateWindowFrameMargins(const WId windowId, const bool reset)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
// We can't extend the window frame when DWM composition is disabled.
// No need to try further in this case.
if (!isDwmCompositionEnabled()) {
return;
}
if (!API_DWM_AVAILABLE(DwmExtendFrameIntoClientArea)) {
return;
}
const MARGINS margins = [reset]() -> MARGINS {
if (reset || isWindowFrameBorderVisible()) {
return {0, 0, 0, 0};
} else {
return {1, 1, 1, 1};
}
}();
const auto hwnd = reinterpret_cast<HWND>(windowId);
const HRESULT hr = API_CALL_FUNCTION(DwmExtendFrameIntoClientArea, hwnd, &margins);
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmExtendFrameIntoClientArea, hr);
return;
}
triggerFrameChange(windowId);
}
void Utils::updateInternalWindowFrameMargins(QWindow *window, const bool enable)
{
Q_ASSERT(window);
if (!window) {
return;
}
const WId windowId = window->winId();
const QMargins margins = [enable, windowId]() -> QMargins {
if (!enable) {
return {};
}
const int titleBarHeight = getTitleBarHeight(windowId, true);
if (isWindowFrameBorderVisible()) {
return {0, -titleBarHeight, 0, 0};
} else {
const int frameSizeX = getResizeBorderThickness(windowId, true, true);
const int frameSizeY = getResizeBorderThickness(windowId, false, true);
return {-frameSizeX, -titleBarHeight, -frameSizeX, -frameSizeY};
}
}();
const QVariant marginsVar = QVariant::fromValue(margins);
window->setProperty("_q_windowsCustomMargins", marginsVar);
#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
if (QPlatformWindow *platformWindow = window->handle()) {
QGuiApplication::platformNativeInterface()->setWindowProperty(platformWindow, kWindowsCustomMargins, marginsVar);
} else {
qWarning() << "Failed to retrieve the platform window.";
return;
}
#else
if (const auto platformWindow = dynamic_cast<QNativeInterface::Private::QWindowsWindow *>(window->handle())) {
platformWindow->setCustomMargins(margins);
} else {
qWarning() << "Failed to retrieve the platform window.";
return;
}
#endif
triggerFrameChange(windowId);
}
QString Utils::getSystemErrorMessage(const QString &function)
{
Q_ASSERT(!function.isEmpty());
if (function.isEmpty()) {
return {};
}
const DWORD code = GetLastError();
if (code == ERROR_SUCCESS) {
return {};
}
return __getSystemErrorMessage(function, code);
}
QColor Utils::getDwmColorizationColor()
{
const auto resultFromRegistry = []() -> QColor {
const QSettings registry(dwmRegistryKey(), QSettings::NativeFormat);
bool ok = false;
const DWORD value = registry.value(kColorizationColor).toULongLong(&ok);
return (ok ? QColor::fromRgba(value) : kDefaultDarkGrayColor);
};
if (!API_DWM_AVAILABLE(DwmGetColorizationColor)) {
return resultFromRegistry();
}
DWORD color = 0;
BOOL opaque = FALSE;
const HRESULT hr = API_CALL_FUNCTION(DwmGetColorizationColor, &color, &opaque);
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmGetColorizationColor, hr);
return resultFromRegistry();
}
return QColor::fromRgba(color);
}
DwmColorizationArea Utils::getDwmColorizationArea()
{
// It's a Win10 only feature. (TO BE VERIFIED)
static const bool isWin10OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1507);
if (!isWin10OrGreater) {
return DwmColorizationArea::None_;
}
const QSettings themeRegistry(personalizeRegistryKey(), QSettings::NativeFormat);
bool themeOk = false;
const DWORD themeValue = themeRegistry.value(qDwmColorKeyName).toULongLong(&themeOk);
const QSettings dwmRegistry(dwmRegistryKey(), QSettings::NativeFormat);
bool dwmOk = false;
const DWORD dwmValue = dwmRegistry.value(qDwmColorKeyName).toULongLong(&dwmOk);
const bool theme = (themeOk && (themeValue != 0));
const bool dwm = (dwmOk && (dwmValue != 0));
if (theme && dwm) {
return DwmColorizationArea::All;
} else if (theme) {
return DwmColorizationArea::StartMenu_TaskBar_ActionCenter;
} else if (dwm) {
return DwmColorizationArea::TitleBar_WindowBorder;
}
return DwmColorizationArea::None_;
}
void Utils::showSystemMenu(const WId windowId, const QPoint &pos, const bool selectFirstEntry,
const IsWindowFixedSizeCallback &isWindowFixedSize)
{
Q_ASSERT(windowId);
Q_ASSERT(isWindowFixedSize);
if (!windowId || !isWindowFixedSize) {
return;
}
const auto hWnd = reinterpret_cast<HWND>(windowId);
const HMENU hMenu = GetSystemMenu(hWnd, FALSE);
if (!hMenu) {
// The corresponding window doesn't have a system menu, most likely due to the
// lack of the "WS_SYSMENU" window style. This situation should not be treated
// as an error so just ignore it and return early.
return;
}
// Tweak the menu items according to the current window status.
const bool maxOrFull = (IsMaximized(hWnd) || isFullScreen(windowId));
const bool fixedSize = isWindowFixedSize();
EnableMenuItem(hMenu, SC_RESTORE, (MF_BYCOMMAND | ((maxOrFull && !fixedSize) ? MFS_ENABLED : MFS_DISABLED)));
// The first menu item should be selected by default if the menu is brought
// up by keyboard. I don't know how to pre-select a menu item but it seems
// highlight can do the job. However, there's an annoying issue if we do
// this manually: the highlighted menu item is really only highlighted,
// not selected, so even if the mouse cursor hovers on other menu items
// or the user navigates to other menu items through keyboard, the original
// highlight bar will not move accordingly, the OS will generate another
// highlight bar to indicate the current selected menu item, which will make
// the menu look kind of weird. Currently I don't know how to fix this issue.
HiliteMenuItem(hWnd, hMenu, SC_RESTORE, (MF_BYCOMMAND | (selectFirstEntry ? MFS_HILITE : MFS_UNHILITE)));
EnableMenuItem(hMenu, SC_MOVE, (MF_BYCOMMAND | (!maxOrFull ? MFS_ENABLED : MFS_DISABLED)));
EnableMenuItem(hMenu, SC_SIZE, (MF_BYCOMMAND | ((!maxOrFull && !fixedSize) ? MFS_ENABLED : MFS_DISABLED)));
EnableMenuItem(hMenu, SC_MINIMIZE, (MF_BYCOMMAND | MFS_ENABLED));
EnableMenuItem(hMenu, SC_MAXIMIZE, (MF_BYCOMMAND | ((!maxOrFull && !fixedSize) ? MFS_ENABLED : MFS_DISABLED)));
EnableMenuItem(hMenu, SC_CLOSE, (MF_BYCOMMAND | MFS_ENABLED));
// The default menu item will appear in bold font. There can only be one default
// menu item per menu at most. Set the item ID to "UINT_MAX" (or simply "-1")
// can clear the default item for the given menu.
SetMenuDefaultItem(hMenu, SC_CLOSE, FALSE);
// Popup the system menu at the required position.
const int result = TrackPopupMenu(hMenu, (TPM_RETURNCMD | (QGuiApplication::isRightToLeft()
? TPM_RIGHTALIGN : TPM_LEFTALIGN)), pos.x(), pos.y(), 0, hWnd, nullptr);
if (result == 0) {
// The user canceled the menu, no need to continue.
return;
}
// Send the command that the user choses to the corresponding window.
if (PostMessageW(hWnd, WM_SYSCOMMAND, result, 0) == FALSE) {
qWarning() << getSystemErrorMessage(kPostMessageW);
}
}
bool Utils::isFullScreen(const WId windowId)
{
Q_ASSERT(windowId);
if (!windowId) {
return false;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
RECT wndRect = {};
if (GetWindowRect(hwnd, &wndRect) == FALSE) {
qWarning() << getSystemErrorMessage(kGetWindowRect);
return false;
}
// According to Microsoft Docs, we should compare to the primary screen's geometry
// (if we can't determine the correct screen of our window).
const HMONITOR mon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY);
if (!mon) {
qWarning() << getSystemErrorMessage(kMonitorFromWindow);
return false;
}
MONITORINFO mi;
SecureZeroMemory(&mi, sizeof(mi));
mi.cbSize = sizeof(mi);
if (GetMonitorInfoW(mon, &mi) == FALSE) {
qWarning() << getSystemErrorMessage(kGetMonitorInfoW);
return false;
}
// Compare to the full area of the screen, not the work area.
const RECT scrRect = mi.rcMonitor;
return ((wndRect.left == scrRect.left) && (wndRect.top == scrRect.top)
&& (wndRect.right == scrRect.right) && (wndRect.bottom == scrRect.bottom));
}
bool Utils::isWindowNoState(const WId windowId)
{
Q_ASSERT(windowId);
if (!windowId) {
return false;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
WINDOWPLACEMENT wp;
SecureZeroMemory(&wp, sizeof(wp));
wp.length = sizeof(wp); // This line is important! Don't miss it!
if (GetWindowPlacement(hwnd, &wp) == FALSE) {
qWarning() << getSystemErrorMessage(kGetWindowPlacement);
return false;
}
return ((wp.showCmd == SW_NORMAL) || (wp.showCmd == SW_RESTORE));
}
void Utils::syncWmPaintWithDwm()
{
// No need to sync with DWM if DWM composition is disabled.
if (!isDwmCompositionEnabled()) {
return;
}
if (!API_WINMM_AVAILABLE(timeGetDevCaps)) {
return;
}
if (!API_WINMM_AVAILABLE(timeBeginPeriod)) {
return;
}
if (!API_WINMM_AVAILABLE(timeEndPeriod)) {
return;
}
if (!API_DWM_AVAILABLE(DwmGetCompositionTimingInfo)) {
return;
}
// Dirty hack to workaround the resize flicker caused by DWM.
LARGE_INTEGER freq = {};
if (QueryPerformanceFrequency(&freq) == FALSE) {
qWarning() << getSystemErrorMessage(kQueryPerformanceFrequency);
return;
}
TIMECAPS tc = {};
if (API_CALL_FUNCTION(timeGetDevCaps, &tc, sizeof(tc)) != MMSYSERR_NOERROR) {
qWarning() << "timeGetDevCaps() failed.";
return;
}
const UINT ms_granularity = tc.wPeriodMin;
if (API_CALL_FUNCTION(timeBeginPeriod, ms_granularity) != TIMERR_NOERROR) {
qWarning() << "timeBeginPeriod() failed.";
return;
}
LARGE_INTEGER now0 = {};
if (QueryPerformanceCounter(&now0) == FALSE) {
qWarning() << getSystemErrorMessage(kQueryPerformanceCounter);
return;
}
// ask DWM where the vertical blank falls
DWM_TIMING_INFO dti;
SecureZeroMemory(&dti, sizeof(dti));
dti.cbSize = sizeof(dti);
const HRESULT hr = API_CALL_FUNCTION(DwmGetCompositionTimingInfo, nullptr, &dti);
if (FAILED(hr)) {
qWarning() << getSystemErrorMessage(kDwmGetCompositionTimingInfo);
return;
}
LARGE_INTEGER now1 = {};
if (QueryPerformanceCounter(&now1) == FALSE) {
qWarning() << getSystemErrorMessage(kQueryPerformanceCounter);
return;
}
// - DWM told us about SOME vertical blank
// - past or future, possibly many frames away
// - convert that into the NEXT vertical blank
const LONGLONG period = dti.qpcRefreshPeriod;
const LONGLONG dt = dti.qpcVBlank - now1.QuadPart;
LONGLONG w = 0, m = 0;
if (dt >= 0) {
w = dt / period;
} else {
// reach back to previous period
// - so m represents consistent position within phase
w = -1 + dt / period;
}
m = dt - (period * w);
Q_ASSERT(m >= 0);
Q_ASSERT(m < period);
const qreal m_ms = (1000.0 * qreal(m) / qreal(freq.QuadPart));
Sleep(static_cast<DWORD>(qRound(m_ms)));
if (API_CALL_FUNCTION(timeEndPeriod, ms_granularity) != TIMERR_NOERROR) {
qWarning() << "timeEndPeriod() failed.";
}
}
bool Utils::isHighContrastModeEnabled()
{
HIGHCONTRASTW hc;
SecureZeroMemory(&hc, sizeof(hc));
hc.cbSize = sizeof(hc);
if (SystemParametersInfoW(SPI_GETHIGHCONTRAST, sizeof(hc), &hc, 0) == FALSE) {
qWarning() << getSystemErrorMessage(kSystemParametersInfoW);
return false;
}
return (hc.dwFlags & HCF_HIGHCONTRASTON);
}
quint32 Utils::getPrimaryScreenDpi(const bool horizontal)
{
const HMONITOR monitor = []() -> HMONITOR {
const HWND window = ensureDummyWindow();
if (window) {
return MonitorFromWindow(window, MONITOR_DEFAULTTOPRIMARY);
}
static constexpr const int kTaskBarSize = 100;
return MonitorFromPoint(POINT{kTaskBarSize, kTaskBarSize}, MONITOR_DEFAULTTOPRIMARY);
}();
if (API_SHCORE_AVAILABLE(GetDpiForMonitor)) {
if (monitor) {
UINT dpiX = 0, dpiY = 0;
const HRESULT hr = API_CALL_FUNCTION(GetDpiForMonitor, monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY);
if (SUCCEEDED(hr) && (dpiX > 0) && (dpiY > 0)) {
return (horizontal ? dpiX : dpiY);
} else {
qWarning() << __getSystemErrorMessage(kGetDpiForMonitor, hr);
}
} else {
qWarning() << getSystemErrorMessage(kMonitorFromPoint);
}
}
if (API_SHCORE_AVAILABLE(GetScaleFactorForMonitor)) {
if (monitor) {
DEVICE_SCALE_FACTOR factor = DEVICE_SCALE_FACTOR_INVALID;
const HRESULT hr = API_CALL_FUNCTION(GetScaleFactorForMonitor, monitor, &factor);
if (SUCCEEDED(hr) && (factor != DEVICE_SCALE_FACTOR_INVALID)) {
return quint32(qRound(qreal(USER_DEFAULT_SCREEN_DPI) * qreal(factor) / qreal(100)));
} else {
qWarning() << __getSystemErrorMessage(kGetScaleFactorForMonitor, hr);
}
} else {
qWarning() << getSystemErrorMessage(kMonitorFromPoint);
}
}
if (API_D2D_AVAILABLE(D2D1CreateFactory)) {
using D2D1CreateFactoryPtr =
HRESULT(WINAPI *)(D2D1_FACTORY_TYPE, REFIID, CONST D2D1_FACTORY_OPTIONS *, void **);
const auto pD2D1CreateFactory =
reinterpret_cast<D2D1CreateFactoryPtr>(SysApiLoader::instance()->get(kD2D1CreateFactory));
HumbleComPtr<ID2D1Factory> d2dFactory = nullptr;
HRESULT hr = pD2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, __uuidof(ID2D1Factory),
nullptr, reinterpret_cast<void **>(&d2dFactory));
if (SUCCEEDED(hr)) {
hr = d2dFactory->ReloadSystemMetrics();
if (SUCCEEDED(hr)) {
FLOAT dpiX = 0.0f, dpiY = 0.0f;
QT_WARNING_PUSH
QT_WARNING_DISABLE_DEPRECATED
d2dFactory->GetDesktopDpi(&dpiX, &dpiY);
QT_WARNING_POP
if ((dpiX > 0.0f) && (dpiY > 0.0f)) {
return (horizontal ? quint32(qRound(dpiX)) : quint32(qRound(dpiY)));
} else {
qWarning() << "GetDesktopDpi() failed.";
}
} else {
qWarning() << __getSystemErrorMessage(kReloadSystemMetrics, hr);
}
} else {
qWarning() << __getSystemErrorMessage(kD2D1CreateFactory, hr);
}
}
const HDC hdc = GetDC(nullptr);
if (hdc) {
bool valid = false;
const int dpiX = GetDeviceCaps(hdc, LOGPIXELSX);
const int dpiY = GetDeviceCaps(hdc, LOGPIXELSY);
if ((dpiX > 0) && (dpiY > 0)) {
valid = true;
} else {
qWarning() << getSystemErrorMessage(kGetDeviceCaps);
}
if (ReleaseDC(nullptr, hdc) == 0) {
qWarning() << getSystemErrorMessage(kReleaseDC);
}
if (valid) {
return (horizontal ? dpiX : dpiY);
}
} else {
qWarning() << getSystemErrorMessage(kGetDC);
}
return USER_DEFAULT_SCREEN_DPI;
}
quint32 Utils::getWindowDpi(const WId windowId, const bool horizontal)
{
Q_ASSERT(windowId);
if (!windowId) {
return USER_DEFAULT_SCREEN_DPI;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
if (API_USER_AVAILABLE(GetDpiForWindow)) {
const UINT dpi = API_CALL_FUNCTION(GetDpiForWindow, hwnd);
if (dpi > 0) {
return dpi;
} else {
qWarning() << getSystemErrorMessage(kGetDpiForWindow);
}
}
if (API_USER_AVAILABLE(GetSystemDpiForProcess)) {
const UINT dpi = API_CALL_FUNCTION(GetSystemDpiForProcess, GetCurrentProcess());
if (dpi > 0) {
return dpi;
} else {
qWarning() << getSystemErrorMessage(kGetSystemDpiForProcess);
}
}
if (API_USER_AVAILABLE(GetDpiForSystem)) {
const UINT dpi = API_CALL_FUNCTION(GetDpiForSystem);
if (dpi > 0) {
return dpi;
} else {
qWarning() << getSystemErrorMessage(kGetDpiForSystem);
}
}
if (API_SHCORE_AVAILABLE(GetDpiForMonitor)) {
const HMONITOR monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
if (monitor) {
UINT dpiX = 0, dpiY = 0;
const HRESULT hr = API_CALL_FUNCTION(GetDpiForMonitor, monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY);
if (SUCCEEDED(hr) && (dpiX > 0) && (dpiY > 0)) {
return (horizontal ? dpiX : dpiY);
} else {
qWarning() << __getSystemErrorMessage(kGetDpiForMonitor, hr);
}
} else {
qWarning() << getSystemErrorMessage(kMonitorFromWindow);
}
}
if (API_SHCORE_AVAILABLE(GetScaleFactorForMonitor)) {
const HMONITOR monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
if (monitor) {
DEVICE_SCALE_FACTOR factor = DEVICE_SCALE_FACTOR_INVALID;
const HRESULT hr = API_CALL_FUNCTION(GetScaleFactorForMonitor, monitor, &factor);
if (SUCCEEDED(hr) && (factor != DEVICE_SCALE_FACTOR_INVALID)) {
return quint32(qRound(qreal(USER_DEFAULT_SCREEN_DPI) * qreal(factor) / qreal(100)));
} else {
qWarning() << __getSystemErrorMessage(kGetScaleFactorForMonitor, hr);
}
} else {
qWarning() << getSystemErrorMessage(kMonitorFromWindow);
}
}
return getPrimaryScreenDpi(horizontal);
}
quint32 Utils::getResizeBorderThickness(const WId windowId, const bool horizontal, const bool scaled)
{
Q_ASSERT(windowId);
if (!windowId) {
return 0;
}
if (horizontal) {
return (getSystemMetrics2(windowId, SM_CXSIZEFRAME, true, scaled)
+ getSystemMetrics2(windowId, SM_CXPADDEDBORDER, true, scaled));
} else {
return (getSystemMetrics2(windowId, SM_CYSIZEFRAME, false, scaled)
+ getSystemMetrics2(windowId, SM_CYPADDEDBORDER, false, scaled));
}
}
quint32 Utils::getCaptionHeight(const WId windowId, const bool scaled)
{
Q_ASSERT(windowId);
if (!windowId) {
return 0;
}
return getSystemMetrics2(windowId, SM_CYCAPTION, false, scaled);
}
quint32 Utils::getTitleBarHeight(const WId windowId, const bool scaled)
{
Q_ASSERT(windowId);
if (!windowId) {
return 0;
}
return (getCaptionHeight(windowId, scaled) + getResizeBorderThickness(windowId, false, scaled));
}
quint32 Utils::getFrameBorderThickness(const WId windowId, const bool scaled)
{
Q_ASSERT(windowId);
if (!windowId) {
return 0;
}
// There's no window frame border before Windows 10.
static const bool isWin10OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1507);
if (!isWin10OrGreater) {
return 0;
}
if (!API_DWM_AVAILABLE(DwmGetWindowAttribute)) {
return 0;
}
const UINT dpi = getWindowDpi(windowId, true);
const qreal scaleFactor = (qreal(dpi) / qreal(USER_DEFAULT_SCREEN_DPI));
const auto hwnd = reinterpret_cast<HWND>(windowId);
UINT value = 0;
const HRESULT hr = API_CALL_FUNCTION(DwmGetWindowAttribute, hwnd,
_DWMWA_VISIBLE_FRAME_BORDER_THICKNESS, &value, sizeof(value));
if (SUCCEEDED(hr)) {
const qreal dpr = (scaled ? 1.0 : scaleFactor);
return qRound(qreal(value) / dpr);
} else {
const qreal dpr = (scaled ? scaleFactor : 1.0);
return qRound(qreal(kDefaultWindowFrameBorderThickness) * dpr);
}
}
QColor Utils::getFrameBorderColor(const bool active)
{
// There's no window frame border before Windows 10.
// So we just return a default value which is based on most window managers.
static const bool isWin10OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1507);
if (!isWin10OrGreater) {
return (active ? kDefaultBlackColor : kDefaultDarkGrayColor);
}
const bool dark = shouldAppsUseDarkMode();
if (active) {
if (isFrameBorderColorized()) {
return getDwmColorizationColor();
} else {
return kDefaultFrameBorderActiveColor;
}
} else {
return (dark ? kDefaultFrameBorderInactiveColorDark : kDefaultFrameBorderInactiveColorLight);
}
}
void Utils::updateWindowFrameBorderColor(const WId windowId, const bool dark)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
// There's no global dark theme before Win10 1607.
static const bool isWin10RS1OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1607);
if (!isWin10RS1OrGreater) {
return;
}
if (!API_DWM_AVAILABLE(DwmSetWindowAttribute)) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
static const bool isWin1020H1OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_2004);
const DWORD mode = (isWin1020H1OrGreater ? _DWMWA_USE_IMMERSIVE_DARK_MODE : _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1);
const BOOL value = (dark ? TRUE : FALSE);
const HRESULT hr = API_CALL_FUNCTION(DwmSetWindowAttribute, hwnd, mode, &value, sizeof(value));
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
}
void Utils::fixupQtInternals(const WId windowId)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
SetLastError(ERROR_SUCCESS);
const auto oldClassStyle = static_cast<DWORD>(GetClassLongPtrW(hwnd, GCL_STYLE));
if (oldClassStyle == 0) {
qWarning() << getSystemErrorMessage(kGetClassLongPtrW);
return;
}
// CS_HREDRAW/CS_VREDRAW will trigger a repaint event when the window size changes
// horizontally/vertically, which will cause flicker and jitter during window
// resizing, mostly for the applications which do all the painting by themselves.
// So we remove these flags from the window class here, Qt by default won't add them
// but let's make it extra safe.
const DWORD newClassStyle = (oldClassStyle & ~(CS_HREDRAW | CS_VREDRAW));
SetLastError(ERROR_SUCCESS);
if (SetClassLongPtrW(hwnd, GCL_STYLE, static_cast<LONG_PTR>(newClassStyle)) == 0) {
qWarning() << getSystemErrorMessage(kSetClassLongPtrW);
return;
}
SetLastError(ERROR_SUCCESS);
const auto oldWindowStyle = static_cast<DWORD>(GetWindowLongPtrW(hwnd, GWL_STYLE));
if (oldWindowStyle == 0) {
qWarning() << getSystemErrorMessage(kGetWindowLongPtrW);
return;
}
// Qt by default adds the "WS_POPUP" flag to all Win32 windows it created and maintained,
// which is not a good thing (although it won't cause any obvious issues in most cases
// either), because popup windows have some different behavior with normal overlapped
// windows, for example, it will affect DWM's default policy. And Qt will also not add
// the "WS_OVERLAPPED" flag to the windows in some cases, which also causes some trouble
// for us. To avoid some weird bugs, we do the correction here: remove the WS_POPUP flag
// and add the WS_OVERLAPPED flag, unconditionally.
const DWORD newWindowStyle = ((oldWindowStyle & ~WS_POPUP) | WS_OVERLAPPED);
SetLastError(ERROR_SUCCESS);
if (SetWindowLongPtrW(hwnd, GWL_STYLE, static_cast<LONG_PTR>(newWindowStyle)) == 0) {
qWarning() << getSystemErrorMessage(kSetWindowLongPtrW);
return;
}
triggerFrameChange(windowId);
}
void Utils::startSystemMove(QWindow *window, const QPoint &globalPos)
{
Q_UNUSED(globalPos);
Q_ASSERT(window);
if (!window) {
return;
}
#if (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
window->startSystemMove();
#else
if (ReleaseCapture() == FALSE) {
qWarning() << getSystemErrorMessage(kReleaseCapture);
return;
}
const auto hwnd = reinterpret_cast<HWND>(window->winId());
if (PostMessageW(hwnd, WM_SYSCOMMAND, 0xF012 /*SC_DRAGMOVE*/, 0) == FALSE) {
qWarning() << getSystemErrorMessage(kPostMessageW);
}
#endif
}
void Utils::startSystemResize(QWindow *window, const Qt::Edges edges, const QPoint &globalPos)
{
Q_UNUSED(globalPos);
Q_ASSERT(window);
if (!window) {
return;
}
if (edges == Qt::Edges{}) {
return;
}
#if (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
window->startSystemResize(edges);
#else
if (ReleaseCapture() == FALSE) {
qWarning() << getSystemErrorMessage(kReleaseCapture);
return;
}
const auto hwnd = reinterpret_cast<HWND>(window->winId());
if (PostMessageW(hwnd, WM_SYSCOMMAND, qtEdgesToWin32Orientation(edges), 0) == FALSE) {
qWarning() << getSystemErrorMessage(kPostMessageW);
}
#endif
}
bool Utils::isWindowFrameBorderVisible()
{
static const bool result = []() -> bool {
const FramelessConfig * const config = FramelessConfig::instance();
if (config->isSet(Option::ForceShowWindowFrameBorder)) {
return true;
}
if (config->isSet(Option::ForceHideWindowFrameBorder)) {
return false;
}
static const bool isWin10OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1507);
return isWin10OrGreater;
}();
return result;
}
bool Utils::isTitleBarColorized()
{
// CHECK: is it supported on win7?
static const bool isWin10OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1507);
if (!isWin10OrGreater) {
return false;
}
const DwmColorizationArea area = getDwmColorizationArea();
return ((area == DwmColorizationArea::TitleBar_WindowBorder) || (area == DwmColorizationArea::All));
}
bool Utils::isFrameBorderColorized()
{
return isTitleBarColorized();
}
void Utils::installSystemMenuHook(const WId windowId,
const IsWindowFixedSizeCallback &isWindowFixedSize,
const IsInsideTitleBarDraggableAreaCallback &isInTitleBarArea,
const GetWindowDevicePixelRatioCallback &getDevicePixelRatio)
{
Q_ASSERT(windowId);
Q_ASSERT(isWindowFixedSize);
if (!windowId || !isWindowFixedSize) {
return;
}
QMutexLocker locker(&g_utilsHelper()->mutex);
if (g_utilsHelper()->data.contains(windowId)) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
SetLastError(ERROR_SUCCESS);
const auto originalWindowProc = reinterpret_cast<WNDPROC>(GetWindowLongPtrW(hwnd, GWLP_WNDPROC));
Q_ASSERT(originalWindowProc);
if (!originalWindowProc) {
qWarning() << getSystemErrorMessage(kGetWindowLongPtrW);
return;
}
SetLastError(ERROR_SUCCESS);
if (SetWindowLongPtrW(hwnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(SystemMenuHookWindowProc)) == 0) {
qWarning() << getSystemErrorMessage(kSetWindowLongPtrW);
return;
}
//triggerFrameChange(windowId); // Crash
Win32UtilsHelperData data = {};
data.originalWindowProc = originalWindowProc;
data.isWindowFixedSize = isWindowFixedSize;
data.isInTitleBarArea = isInTitleBarArea;
data.getDevicePixelRatio = getDevicePixelRatio;
g_utilsHelper()->data.insert(windowId, data);
}
void Utils::uninstallSystemMenuHook(const WId windowId)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
QMutexLocker locker(&g_utilsHelper()->mutex);
if (!g_utilsHelper()->data.contains(windowId)) {
return;
}
const Win32UtilsHelperData data = g_utilsHelper()->data.value(windowId);
Q_ASSERT(data.originalWindowProc);
if (!data.originalWindowProc) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
SetLastError(ERROR_SUCCESS);
if (SetWindowLongPtrW(hwnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(data.originalWindowProc)) == 0) {
qWarning() << getSystemErrorMessage(kSetWindowLongPtrW);
return;
}
//triggerFrameChange(windowId); // Crash
g_utilsHelper()->data.remove(windowId);
}
void Utils::tryToBeCompatibleWithQtFramelessWindowHint(const WId windowId,
const GetWindowFlagsCallback &getWindowFlags,
const SetWindowFlagsCallback &setWindowFlags,
const bool enable)
{
Q_ASSERT(windowId);
Q_ASSERT(getWindowFlags);
Q_ASSERT(setWindowFlags);
if (!windowId || !getWindowFlags || !setWindowFlags) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
SetLastError(ERROR_SUCCESS);
const LONG_PTR originalWindowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (originalWindowStyle == 0) {
qWarning() << getSystemErrorMessage(kGetWindowLongPtrW);
return;
}
const Qt::WindowFlags originalWindowFlags = getWindowFlags();
const Qt::WindowFlags newWindowFlags = (enable ? (originalWindowFlags | Qt::FramelessWindowHint)
: (originalWindowFlags & ~Qt::FramelessWindowHint));
setWindowFlags(newWindowFlags);
// The trick is to restore the window style. Qt mainly adds the "WS_EX_LAYERED"
// flag to the extended window style.
SetLastError(ERROR_SUCCESS);
if (SetWindowLongPtrW(hwnd, GWL_STYLE, originalWindowStyle) == 0) {
qWarning() << getSystemErrorMessage(kSetWindowLongPtrW);
return;
}
triggerFrameChange(windowId);
}
void Utils::setAeroSnappingEnabled(const WId windowId, const bool enable)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
SetLastError(ERROR_SUCCESS);
const auto oldWindowStyle = static_cast<DWORD>(GetWindowLongPtrW(hwnd, GWL_STYLE));
if (oldWindowStyle == 0) {
qWarning() << getSystemErrorMessage(kGetWindowLongPtrW);
return;
}
// The key is the existence of the "WS_THICKFRAME" flag.
// But we should also disallow window maximize if Aero Snapping is disabled.
static constexpr const DWORD resizableFlags = (WS_THICKFRAME | WS_MAXIMIZEBOX);
const DWORD newWindowStyle = [enable, oldWindowStyle]() -> DWORD {
if (enable) {
return ((oldWindowStyle & ~WS_POPUP) | resizableFlags);
} else {
return ((oldWindowStyle & ~resizableFlags) | WS_POPUP);
}
}();
SetLastError(ERROR_SUCCESS);
if (SetWindowLongPtrW(hwnd, GWL_STYLE, static_cast<LONG_PTR>(newWindowStyle)) == 0) {
qWarning() << getSystemErrorMessage(kSetWindowLongPtrW);
return;
}
triggerFrameChange(windowId);
}
void Utils::tryToEnableHighestDpiAwarenessLevel()
{
if (API_USER_AVAILABLE(SetProcessDpiAwarenessContext)) {
const auto SetProcessDpiAwarenessContext2 = [](const DPI_AWARENESS_CONTEXT context) -> bool {
Q_ASSERT(context);
if (!context) {
return false;
}
if (API_CALL_FUNCTION(SetProcessDpiAwarenessContext, context) != FALSE) {
return true;
}
const DWORD dwError = GetLastError();
// "ERROR_ACCESS_DENIED" means set externally (mostly due to manifest file).
// Any attempt to change the DPI awareness level through API will always fail,
// so we treat this situation as succeeded.
if (dwError == ERROR_ACCESS_DENIED) {
qDebug() << "FramelessHelper doesn't have access to change the current process's DPI awareness level,"
" most likely due to it has been set externally already.";
return true;
}
qWarning() << __getSystemErrorMessage(kSetProcessDpiAwarenessContext, dwError);
return false;
};
if (SetProcessDpiAwarenessContext2(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2)) {
return;
}
if (SetProcessDpiAwarenessContext2(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE)) {
return;
}
if (SetProcessDpiAwarenessContext2(DPI_AWARENESS_CONTEXT_SYSTEM_AWARE)) {
return;
}
if (SetProcessDpiAwarenessContext2(DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED)) {
return;
}
}
if (API_SHCORE_AVAILABLE(SetProcessDpiAwareness)) {
const auto SetProcessDpiAwareness2 = [](const PROCESS_DPI_AWARENESS pda) -> bool {
const HRESULT hr = API_CALL_FUNCTION(SetProcessDpiAwareness, pda);
if (SUCCEEDED(hr)) {
return true;
}
// "E_ACCESSDENIED" means set externally (mostly due to manifest file).
// Any attempt to change the DPI awareness level through API will always fail,
// so we treat this situation as succeeded.
if (hr == E_ACCESSDENIED) {
qDebug() << "FramelessHelper doesn't have access to change the current process's DPI awareness level,"
" most likely due to it has been set externally already.";
return true;
}
qWarning() << __getSystemErrorMessage(kSetProcessDpiAwareness, hr);
return false;
};
if (SetProcessDpiAwareness2(PROCESS_PER_MONITOR_DPI_AWARE_V2)) {
return;
}
if (SetProcessDpiAwareness2(PROCESS_PER_MONITOR_DPI_AWARE)) {
return;
}
if (SetProcessDpiAwareness2(PROCESS_SYSTEM_DPI_AWARE)) {
return;
}
}
// Some really old MinGW SDK may lack this function, we workaround this
// issue by always load it dynamically at runtime.
if (API_USER_AVAILABLE(SetProcessDPIAware)) {
if (API_CALL_FUNCTION(SetProcessDPIAware) == FALSE) {
qWarning() << getSystemErrorMessage(kSetProcessDPIAware);
}
}
}
SystemTheme Utils::getSystemTheme()
{
if (isHighContrastModeEnabled()) {
return SystemTheme::HighContrast;
}
static const bool isWin10RS1OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1607);
if (isWin10RS1OrGreater && shouldAppsUseDarkMode()) {
return SystemTheme::Dark;
}
return SystemTheme::Light;
}
void Utils::updateGlobalWin32ControlsTheme(const WId windowId, const bool dark)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
// There's no global dark theme for common Win32 controls before Win10 1809.
static const bool isWin10RS5OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1809);
if (!isWin10RS5OrGreater) {
return;
}
if (!API_THEME_AVAILABLE(SetWindowTheme)) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
const HRESULT hr = API_CALL_FUNCTION(SetWindowTheme, hwnd,
(dark ? kSystemDarkThemeResourceName : kSystemLightThemeResourceName), nullptr);
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kSetWindowTheme, hr);
}
}
bool Utils::shouldAppsUseDarkMode_windows()
{
// The global dark mode was first introduced in Windows 10 1607.
static const bool isWin10RS1OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1607);
if (!isWin10RS1OrGreater) {
return false;
}
const auto resultFromRegistry = []() -> bool {
const QSettings registry(personalizeRegistryKey(), QSettings::NativeFormat);
bool ok = false;
const DWORD value = registry.value(kAppsUseLightTheme).toULongLong(&ok);
return (ok && (value == 0));
};
// Starting from Windows 10 1903, "ShouldAppsUseDarkMode()" (exported by UXTHEME.DLL,
// ordinal number 132) always return "TRUE" (actually, a random non-zero number at
// runtime), so we can't use it due to this unreliability. In this case, we just simply
// read the user's setting from the registry instead, it's not elegant but at least
// it works well.
// However, reverse engineering of Win11's Task Manager reveals that Microsoft still
// uses this function internally to determine the system theme, and the Task Manager
// can correctly respond to the theme change message indeed. Is it fixed silently
// in some unknown Windows versions? To be checked.
return resultFromRegistry();
}
void Utils::forceSquareCornersForWindow(const WId windowId, const bool force)
{
Q_ASSERT(windowId);
if (!windowId) {
return;
}
// We cannot change the window corner style until Windows 11.
static const bool isWin11OrGreater = isWindowsVersionOrGreater(WindowsVersion::_11_21H2);
if (!isWin11OrGreater) {
return;
}
if (!API_DWM_AVAILABLE(DwmSetWindowAttribute)) {
return;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
const _DWM_WINDOW_CORNER_PREFERENCE wcp = (force ? _DWMWCP_DONOTROUND : _DWMWCP_ROUND);
const HRESULT hr = API_CALL_FUNCTION(DwmSetWindowAttribute, hwnd, _DWMWA_WINDOW_CORNER_PREFERENCE, &wcp, sizeof(wcp));
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
}
bool Utils::setBlurBehindWindowEnabled(const WId windowId, const BlurMode mode, const QColor &color)
{
Q_ASSERT(windowId);
if (!windowId) {
return false;
}
const auto hwnd = reinterpret_cast<HWND>(windowId);
static const bool isWin8OrGreater = isWindowsVersionOrGreater(WindowsVersion::_8);
if (isWin8OrGreater) {
if (!API_USER_AVAILABLE(SetWindowCompositionAttribute)) {
return false;
}
if (!API_DWM_AVAILABLE(DwmSetWindowAttribute)) {
return false;
}
if (!API_DWM_AVAILABLE(DwmExtendFrameIntoClientArea)) {
return false;
}
const auto pSetWindowCompositionAttribute =
reinterpret_cast<SetWindowCompositionAttributePtr>(
SysApiLoader::instance()->get(kSetWindowCompositionAttribute));
//static const bool isWin11Insider2OrGreater = doCompareWindowsVersion({10, 0, 22557});
static const bool isWin11Insider1OrGreater = doCompareWindowsVersion({10, 0, 22523});
static const bool isWin11OrGreater = isWindowsVersionOrGreater(WindowsVersion::_11_21H2);
static const bool isWin10OrGreater = isWindowsVersionOrGreater(WindowsVersion::_10_1507);
const BlurMode blurMode = [mode]() -> BlurMode {
if ((mode == BlurMode::Disable) || (mode == BlurMode::Windows_Aero)) {
return mode;
}
if ((mode == BlurMode::Windows_Mica) && !isWin11OrGreater) {
qWarning() << "The Mica material is not supported on your system, fallback to the Acrylic blur instead...";
if (isWin10OrGreater) {
return BlurMode::Windows_Acrylic;
}
qWarning() << "The Acrylic blur is not supported on your system, fallback to the traditional DWM blur instead...";
return BlurMode::Windows_Aero;
}
if ((mode == BlurMode::Windows_Acrylic) && !isWin10OrGreater) {
qWarning() << "The Acrylic blur is not supported on your system, fallback to the traditional DWM blur instead...";
return BlurMode::Windows_Aero;
}
if (mode == BlurMode::Default) {
if (isWin11OrGreater) {
return BlurMode::Windows_Mica;
}
if (isWin10OrGreater) {
return BlurMode::Windows_Acrylic;
}
return BlurMode::Windows_Aero;
}
Q_ASSERT(false); // Really should NOT go here.
return mode;
}();
if (blurMode == BlurMode::Disable) {
if (isWin11Insider1OrGreater) {
const _DWM_SYSTEMBACKDROP_TYPE dwmsbt = _DWMSBT_NONE;
const HRESULT hr = API_CALL_FUNCTION(DwmSetWindowAttribute,
hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &dwmsbt, sizeof(dwmsbt));
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
}
if (isWin11OrGreater) {
const BOOL enable = FALSE;
HRESULT hr = API_CALL_FUNCTION(DwmSetWindowAttribute,
hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
const MARGINS margins = {0, 0, 0, 0};
hr = API_CALL_FUNCTION(DwmExtendFrameIntoClientArea, hwnd, &margins);
if (FAILED(hr)) {
qWarning() << __getSystemErrorMessage(kDwmExtendFrameIntoClientArea, hr);
}
}
ACCENT_POLICY policy;
SecureZeroMemory(&policy, sizeof(policy));
policy.State = ACCENT_DISABLED;
WINDOWCOMPOSITIONATTRIBDATA wcad;
SecureZeroMemory(&wcad, sizeof(wcad));
wcad.Attrib = WCA_ACCENT_POLICY;
wcad.pvData = &policy;
wcad.cbData = sizeof(policy);
if (pSetWindowCompositionAttribute(hwnd, &wcad) == FALSE) {
qWarning() << getSystemErrorMessage(kSetWindowCompositionAttribute);
}
return true;
} else {
if (blurMode == BlurMode::Windows_Mica) {
const MARGINS margins = {-1, -1, -1, -1};
HRESULT hr = API_CALL_FUNCTION(DwmExtendFrameIntoClientArea, hwnd, &margins);
if (SUCCEEDED(hr)) {
if (isWin11Insider1OrGreater) {
// ### FIXME: Is it necessary to enable the host backdrop brush in the first place? To be checked.
const BOOL enable = TRUE;
hr = API_CALL_FUNCTION(DwmSetWindowAttribute, hwnd,
_DWMWA_USE_HOSTBACKDROPBRUSH, &enable, sizeof(enable));
if (SUCCEEDED(hr)) {
const _DWM_SYSTEMBACKDROP_TYPE dwmsbt = _DWMSBT_MAINWINDOW; // Mica
hr = API_CALL_FUNCTION(DwmSetWindowAttribute, hwnd,
_DWMWA_SYSTEMBACKDROP_TYPE, &dwmsbt, sizeof(dwmsbt));
if (SUCCEEDED(hr)) {
return true;
} else {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
} else {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
} else {
const BOOL enable = TRUE;
hr = API_CALL_FUNCTION(DwmSetWindowAttribute,
hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
if (SUCCEEDED(hr)) {
return true;
} else {
qWarning() << __getSystemErrorMessage(kDwmSetWindowAttribute, hr);
}
}
} else {
qWarning() << __getSystemErrorMessage(kDwmExtendFrameIntoClientArea, hr);
}
} else {
ACCENT_POLICY policy;
SecureZeroMemory(&policy, sizeof(policy));
if (blurMode == BlurMode::Windows_Acrylic) {
policy.State = ACCENT_ENABLE_ACRYLICBLURBEHIND;
policy.Flags = 2; // Magic number, this member must be set to 2.
const QColor gradientColor = [&color]() -> QColor {
if (color.isValid()) {
return color;
}
QColor clr = (shouldAppsUseDarkMode() ? kDefaultSystemDarkColor : kDefaultSystemLightColor);
clr.setAlpha(230); // 90% opacity.
return clr;
}();
// This API expects the #AABBGGRR format.
policy.GradientColor = DWORD(qRgba(gradientColor.blue(),
gradientColor.green(), gradientColor.red(), gradientColor.alpha()));
} else if (blurMode == BlurMode::Windows_Aero) {
policy.State = ACCENT_ENABLE_BLURBEHIND;
} else {
Q_ASSERT(false); // Really should NOT go here.
}
WINDOWCOMPOSITIONATTRIBDATA wcad;
SecureZeroMemory(&wcad, sizeof(wcad));
wcad.Attrib = WCA_ACCENT_POLICY;
wcad.pvData = &policy;
wcad.cbData = sizeof(policy);
if (pSetWindowCompositionAttribute(hwnd, &wcad) != FALSE) {
if (!isWin11OrGreater) {
qDebug() << "Enabling the Acrylic blur for Win32 windows on Windows 10 "
"is very buggy. The only recommended way by Microsoft is to "
"use the XAML Island technology or use pure UWP instead. If "
"you find your window becomes very laggy during moving and "
"resizing, please disable the Acrylic blur immediately.";
}
return true;
}
qWarning() << getSystemErrorMessage(kSetWindowCompositionAttribute);
}
}
} else {
// We prefer to use "DwmEnableBlurBehindWindow" on Windows 7 because it behaves
// better than the undocumented API.
if (API_DWM_AVAILABLE(DwmEnableBlurBehindWindow)) {
DWM_BLURBEHIND dwmbb;
SecureZeroMemory(&dwmbb, sizeof(dwmbb));
dwmbb.dwFlags = DWM_BB_ENABLE;
dwmbb.fEnable = [mode]() -> BOOL {
if (mode == BlurMode::Disable) {
return FALSE;
}
if ((mode != BlurMode::Default) && (mode != BlurMode::Windows_Aero)) {
qWarning() << "The only supported blur mode on Windows 7 is the traditional DWM blur.";
}
return TRUE;
}();
const HRESULT hr = API_CALL_FUNCTION(DwmEnableBlurBehindWindow, hwnd, &dwmbb);
if (SUCCEEDED(hr)) {
return true;
}
qWarning() << __getSystemErrorMessage(kDwmEnableBlurBehindWindow, hr);
}
}
return false;
}
QColor Utils::getDwmAccentColor()
{
const QSettings registry(dwmRegistryKey(), QSettings::NativeFormat);
bool ok = false;
const DWORD value = registry.value(kAccentColor).toULongLong(&ok);
if (!ok) {
return kDefaultDarkGrayColor;
}
// The retrieved value is in the #AABBGGRR format, we need to
// convert it to the #AARRGGBB format that Qt accepts.
const QColor abgr = QColor::fromRgba(value);
return QColor(abgr.blue(), abgr.green(), abgr.red(), abgr.alpha());
}
FRAMELESSHELPER_END_NAMESPACE