From 9621ea19bb833c576d235c376a9d7f18042ecf5b Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik.hautakoski@gmail.com>
Date: Sat, 10 Sep 2022 14:00:43 +0200
Subject: [PATCH] source/Platform/Win32/Win32Display.cpp: on x64, windows
 headers undefine GWL_USERDATA, So we define it again.

---
 source/Platform/Win32/Win32Display.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/source/Platform/Win32/Win32Display.cpp b/source/Platform/Win32/Win32Display.cpp
index 67993fa..887688c 100644
--- a/source/Platform/Win32/Win32Display.cpp
+++ b/source/Platform/Win32/Win32Display.cpp
@@ -12,6 +12,11 @@ namespace sp {
 
 #define WND_CLASSNAME "SPECTRE_WIN32_WNDCLASS"
 
+#if defined(_WIN64) && !defined(GWL_USERDATA)
+// x64 undefines this. So we define it again.
+#define GWL_USERDATA GWLP_USERDATA
+#endif /* defined(_WIN64) && !defined(GWL_USERDATA) */
+
 static bool firstTime = true;
 
 Win32Display::Win32Display() :