From d48ed3749d8a2c528f3a8ca892524f68e1575564 Mon Sep 17 00:00:00 2001
From: Christian Semmler <mail@csemmler.com>
Date: Thu, 12 Jun 2025 14:02:20 -0700
Subject: [PATCH] Different default full screen behavior for Emscripten

---
 ISLE/isleapp.cpp            | 4 ++++
 miniwin/src/ddraw/ddraw.cpp | 7 ++-----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index a5edd95b..591b1e2e 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -94,7 +94,11 @@ IsleApp::IsleApp()
 	m_cdPath = NULL;
 	m_deviceId = NULL;
 	m_savePath = NULL;
+#ifdef __EMSCRIPTEN__
+	m_fullScreen = FALSE;
+#else
 	m_fullScreen = TRUE;
+#endif
 	m_flipSurfaces = FALSE;
 	m_backBuffersInVram = TRUE;
 	m_using8bit = FALSE;
diff --git a/miniwin/src/ddraw/ddraw.cpp b/miniwin/src/ddraw/ddraw.cpp
index 6842c7ac..fc81ddd3 100644
--- a/miniwin/src/ddraw/ddraw.cpp
+++ b/miniwin/src/ddraw/ddraw.cpp
@@ -284,11 +284,6 @@ HRESULT DirectDrawImpl::SetCooperativeLevel(HWND hWnd, DDSCLFlags dwFlags)
 {
 	SDL_Window* sdlWindow = reinterpret_cast<SDL_Window*>(hWnd);
 
-#ifdef __EMSCRIPTEN__
-	DDWindow = sdlWindow;
-	return DD_OK;
-#endif
-
 	if (sdlWindow) {
 		bool fullscreen;
 		if ((dwFlags & DDSCL_NORMAL) == DDSCL_NORMAL) {
@@ -302,7 +297,9 @@ HRESULT DirectDrawImpl::SetCooperativeLevel(HWND hWnd, DDSCLFlags dwFlags)
 		}
 
 		if (!SDL_SetWindowFullscreen(sdlWindow, fullscreen)) {
+#ifndef __EMSCRIPTEN__
 			return DDERR_GENERIC;
+#endif
 		}
 		DDWindow = sdlWindow;
 		DDRenderer = SDL_CreateRenderer(DDWindow, NULL);