From cfd3567a8a1ec0f907f90763a637b691a2ac4a98 Mon Sep 17 00:00:00 2001
From: Soreepeong <soreepeong@gmail.com>
Date: Thu, 16 Feb 2023 21:50:15 +0900
Subject: [PATCH] Enable dark mode window title bar if applicable

---
 Dalamud.Boot/pch.h        |  1 +
 Dalamud.Boot/xivfixes.cpp | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/Dalamud.Boot/pch.h b/Dalamud.Boot/pch.h
index 2e11e0ab7..3302a44fb 100644
--- a/Dalamud.Boot/pch.h
+++ b/Dalamud.Boot/pch.h
@@ -16,6 +16,7 @@
 
 // Windows Header Files (2)
 #include <Dbt.h>
+#include <dwmapi.h>
 #include <PathCch.h>
 #include <Psapi.h>
 #include <ShlObj.h>
diff --git a/Dalamud.Boot/xivfixes.cpp b/Dalamud.Boot/xivfixes.cpp
index bfbca7d8a..00fc2a008 100644
--- a/Dalamud.Boot/xivfixes.cpp
+++ b/Dalamud.Boot/xivfixes.cpp
@@ -201,6 +201,17 @@ void xivfixes::prevent_devicechange_crashes(bool bApply) {
         if (uMsg == WM_SIZE && wParam == SIZE_RESTORED && (GetWindowLongW(hWnd, GWL_STYLE) & WS_POPUP))
             return ShowWindow(hWnd, SW_MAXIMIZE);
 
+        if (uMsg == WM_CREATE) {
+            // While at it, also apply dark mode title bar to the game.
+            if (const auto dwmapi = LoadLibraryW(L"dwmapi.dll")) {
+                if (const auto fn = reinterpret_cast<decltype(&DwmSetWindowAttribute)>(GetProcAddress(dwmapi, "DwmSetWindowAttribute"))) {
+                    const BOOL trueValue = TRUE;
+                    fn(hWnd, DWMWA_USE_IMMERSIVE_DARK_MODE, &trueValue, sizeof trueValue);
+                }
+                FreeLibrary(dwmapi);
+            }
+        }
+
         return s_pfnGameWndProc(hWnd, uMsg, wParam, lParam);
     });