From fca50346e48e864a97471b02277363892b554601 Mon Sep 17 00:00:00 2001
From: staphen <staphen@gmail.com>
Date: Tue, 9 Dec 2025 20:02:51 -0500
Subject: [PATCH] Restore option to switch to window mode at runtime

---
 Source/utils/display.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Source/utils/display.cpp b/Source/utils/display.cpp
index 8a802244f..1a39ca532 100644
--- a/Source/utils/display.cpp
+++ b/Source/utils/display.cpp
@@ -830,7 +830,8 @@ void SetFullscreenMode()
 #if USE_SDL3
 	if (!SDL_SetWindowFullscreen(ghMainWnd, *GetOptions().Graphics.fullscreen)) ErrSdl();
 #else
-	if (SDL_SetWindowFullscreen(ghMainWnd, *GetOptions().Graphics.upscale ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_FULLSCREEN) != 0) ErrSdl();
+	const Uint32 flags = *GetOptions().Graphics.upscale ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_FULLSCREEN;
+	if (SDL_SetWindowFullscreen(ghMainWnd, *GetOptions().Graphics.fullscreen ? flags : 0) != 0) ErrSdl();
 #endif
 
 	if (!*GetOptions().Graphics.fullscreen) {