From 91274c58b1772dfe38d3fcab291693141e822684 Mon Sep 17 00:00:00 2001
From: Daniel <49284193+dnlkrs@users.noreply.github.com>
Date: 周五, 06 12月 2024 21:55:30 +0800
Subject: [PATCH] Fix WindowsRegistryKey for Qt 6.8.1 (#154)

---
 src/core/qwindowkit_windows.h |   45 +++++++++++++++++++++++++++++++++++++--------
 1 files changed, 37 insertions(+), 8 deletions(-)

diff --git a/src/core/qwindowkit_windows.h b/src/core/qwindowkit_windows.h
index c84f50d..20f24ef 100644
--- a/src/core/qwindowkit_windows.h
+++ b/src/core/qwindowkit_windows.h
@@ -1,3 +1,7 @@
+// Copyright (C) 2023-2024 Stdware Collections (https://www.github.com/stdware)
+// Copyright (C) 2021-2023 wangwenx190 (Yuhang Zhao)
+// SPDX-License-Identifier: Apache-2.0
+
 #ifndef QWINDOWKIT_WINDOWS_H
 #define QWINDOWKIT_WINDOWS_H
 
@@ -18,14 +22,6 @@
 #  define GET_Y_LPARAM(lp) (static_cast<int>(static_cast<short>(HIWORD(lp))))
 #endif
 
-#ifndef IsMinimized
-#  define IsMinimized(hwnd) (::IsIconic(hwnd))
-#endif
-
-#ifndef IsMaximized
-#  define IsMaximized(hwnd) (::IsZoomed(hwnd))
-#endif
-
 #ifndef RECT_WIDTH
 #  define RECT_WIDTH(rect) ((rect).right - (rect).left)
 #endif
@@ -35,6 +31,8 @@
 #endif
 
 // Maybe undocumented Windows messages
+// https://github.com/tinysec/public/blob/master/win32k/MessageTable.md
+// https://ulib.sourceforge.io/doxy/a00239.html
 #ifndef WM_UAHDESTROYWINDOW
 #  define WM_UAHDESTROYWINDOW (0x0090)
 #endif
@@ -112,6 +110,7 @@
     //
     // Registry Helpers
     //
+    
 #if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
     class QWK_CORE_EXPORT WindowsRegistryKey {
     public:
@@ -126,6 +125,9 @@
         QString stringValue(QStringView subKey) const;
         QPair<DWORD, bool> dwordValue(QStringView subKey) const;
 
+        template<typename T>
+        std::optional<T> value(QStringView subKey) const;
+
     private:
         HKEY m_key;
 
@@ -135,6 +137,33 @@
     inline bool WindowsRegistryKey::isValid() const {
         return m_key != nullptr;
     }
+
+    template<>
+    inline std::optional<DWORD> WindowsRegistryKey::value(QStringView subKey) const {
+        const auto dv = dwordValue(subKey);
+        if (!dv.second) {
+            return {};
+        }
+        return dv.first;
+    }
+#elif QT_VERSION < QT_VERSION_CHECK(6, 8, 1)
+    class WindowsRegistryKey : public QWinRegistryKey {
+    public:
+
+        explicit WindowsRegistryKey(HKEY parentHandle, QStringView subKey, REGSAM permissions = KEY_READ, REGSAM access = 0);
+
+        template<typename T>
+        inline std::optional<T> value(QStringView subKey) const;
+    };
+
+    template<>
+    inline std::optional<DWORD> WindowsRegistryKey::value(QStringView subKey) const {
+        const auto dv = dwordValue(subKey);
+        if (!dv.second) {
+            return {};
+        }
+        return dv.first;
+    }
 #else
     using WindowsRegistryKey = QWinRegistryKey;
 #endif

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