From 29901fc2a97eedd3c914f807d1819c9ea7e69973 Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周一, 25 12月 2023 17:53:34 +0800
Subject: [PATCH] Optimize Windows 10 border handling

---
 examples/mainwindow/mainwindow.cpp |   18 ++++++++++++++----
 1 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/examples/mainwindow/mainwindow.cpp b/examples/mainwindow/mainwindow.cpp
index 8c224f3..6a7435e 100644
--- a/examples/mainwindow/mainwindow.cpp
+++ b/examples/mainwindow/mainwindow.cpp
@@ -20,6 +20,10 @@
 #include <widgetframe/windowbar.h>
 #include <widgetframe/windowbutton.h>
 
+#ifdef Q_OS_WINDOWS
+#  include <QWKCore/qwindowkit_windows.h>
+#endif
+
 class ClockWidget : public QLabel {
 public:
     explicit ClockWidget(QWidget *parent = nullptr) : QLabel(parent) {
@@ -114,6 +118,16 @@
     // 1. Setup window agent
     windowAgent = new QWK::WidgetWindowAgent(this);
     windowAgent->setup(this);
+
+#ifdef Q_OS_WIN
+    if (QWK::IsWindows10OrGreater_Real() && !QWK::IsWindows11OrGreater_Real()) {
+        // windowAgent->setWindowAttribute(QStringLiteral("dark-mode"), true);
+
+        // https://github.com/microsoft/terminal/blob/71a6f26e6ece656084e87de1a528c4a8072eeabd/src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp#L940
+        // Must call DWM API to extend top frame to client area
+        windowAgent->setWindowAttribute(QStringLiteral("extra-margins"), true);
+    }
+#endif
 
     // 2. Construct your title bar
     auto menuBar = [this]() {
@@ -298,10 +312,6 @@
     if (!styleSheet().isEmpty() && theme == currentTheme)
         return;
     currentTheme = theme;
-
-#ifdef Q_OS_WIN
-    windowAgent->setWindowAttribute(QStringLiteral("dark-mode"), currentTheme == Dark);
-#endif
 
     if (QFile qss(theme == Dark ? QStringLiteral(":/dark-style.qss")
                                 : QStringLiteral(":/light-style.qss"));

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