From 58ba664255cb0303c5158bf500be4dda00bb6d2c Mon Sep 17 00:00:00 2001
From: "Adam D. Ruppe" <destructionator@gmail.com>
Date: Wed, 14 Nov 2018 09:49:16 -0500
Subject: [PATCH] the window registration is global, so make the local cache
 global too. but this still is not really thread safe so use caution

---
 simpledisplay.d | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/simpledisplay.d b/simpledisplay.d
index b445b29..d7249cf 100644
--- a/simpledisplay.d
+++ b/simpledisplay.d
@@ -7504,7 +7504,7 @@ version(Windows) {
 	// Mix this into the SimpleWindow class
 	mixin template NativeSimpleWindowImplementation() {
 		int curHidden = 0; // counter
-		static bool[string] knownWinClasses;
+		__gshared static bool[string] knownWinClasses;
 		static bool altPressed = false;
 
 		HANDLE oldCursor;