diff --git a/CMakeLists.txt b/CMakeLists.txt
index e681cdf7..5768ccb0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -433,7 +433,6 @@ endif()
 set(lego1_objects)
 set(lego1_link_libraries dxguid d3drm_guid)
 foreach(lego1_library IN LISTS lego1_targets)
-  message("lego1_library:${lego1_library}")
   target_compile_definitions(${lego1_library}-objects PRIVATE LEGO1_DLL)
   list(APPEND lego1_objects $<TARGET_OBJECTS:${lego1_library}-objects>)
   list(APPEND lego1_link_libraries ${lego1_library}-interface)
diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index 10a06a6a..66f13462 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -178,18 +178,15 @@ MxS32 IsleApp::SetupLegoOmni()
 	char mediaPath[256];
 	GetProfileStringA("LEGO Island", "MediaPath", "", mediaPath, sizeof(mediaPath));
 
-	// [library:window] For now, get the underlying Windows HWND to pass into Omni
-	HWND hwnd = (HWND
-	) SDL_GetPointerProperty(SDL_GetWindowProperties(m_windowHandle), SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL);
-
 #ifdef COMPAT_MODE
 	MxS32 failure;
 	{
-		MxOmniCreateParam param(mediaPath, hwnd, m_videoParam, MxOmniCreateFlags());
+		MxOmniCreateParam param(mediaPath, m_windowHandle, m_videoParam, MxOmniCreateFlags());
 		failure = Lego()->Create(param) == FAILURE;
 	}
 #else
-	MxS32 failure = Lego()->Create(MxOmniCreateParam(mediaPath, hwnd, m_videoParam, MxOmniCreateFlags())) == FAILURE;
+	MxS32 failure =
+		Lego()->Create(MxOmniCreateParam(mediaPath, m_windowHandle, m_videoParam, MxOmniCreateFlags())) == FAILURE;
 #endif
 
 	if (!failure) {
@@ -392,12 +389,22 @@ SDL_AppResult SDL_AppEvent(void* appstate, SDL_Event* event)
 		break;
 	}
 
-	// FIXME: use g_userEvent instead of SDL_EVENT_USER
-	if (event->type >= SDL_EVENT_USER && event->type <= SDL_EVENT_LAST - 1) {
+	if (event->user.type == g_legoSdlEvents.m_windowsMessage) {
 		switch (event->user.code) {
 		case WM_ISLE_SETCURSOR:
 			g_isle->SetupCursor((Cursor) (uintptr_t) event->user.data1);
 			break;
+		case WM_QUIT:
+			return SDL_APP_SUCCESS;
+			break;
+		case WM_TIMER:
+			if (InputManager()) {
+				InputManager()->QueueEvent(c_notificationTimer, (MxU8) (uintptr_t) event->user.data1, 0, 0, 0);
+			}
+			break;
+		default:
+			SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unknown SDL Windows message: 0x%" SDL_PRIx32, event->user.code);
+			break;
 		}
 	}
 
diff --git a/LEGO1/lego/legoomni/include/legoinputmanager.h b/LEGO1/lego/legoomni/include/legoinputmanager.h
index f0d1d473..f93e2be3 100644
--- a/LEGO1/lego/legoomni/include/legoinputmanager.h
+++ b/LEGO1/lego/legoomni/include/legoinputmanager.h
@@ -10,6 +10,7 @@
 
 #include <SDL3/SDL_joystick.h>
 #include <SDL3/SDL_keyboard.h>
+#include <SDL3/SDL_timer.h>
 #include <windows.h>
 
 class LegoCameraController;
@@ -145,7 +146,7 @@ private:
 	MxS32 m_x;                            // 0x6c
 	MxS32 m_y;                            // 0x70
 	MxS32 m_unk0x74;                      // 0x74
-	UINT m_autoDragTimerID;               // 0x78
+	SDL_TimerID m_autoDragTimerID;        // 0x78
 	UINT m_autoDragTime;                  // 0x7c
 	MxBool m_unk0x80;                     // 0x80
 	MxBool m_unk0x81;                     // 0x81
diff --git a/LEGO1/lego/legoomni/include/legomain.h b/LEGO1/lego/legoomni/include/legomain.h
index c7126f85..6cec064a 100644
--- a/LEGO1/lego/legoomni/include/legomain.h
+++ b/LEGO1/lego/legoomni/include/legomain.h
@@ -3,9 +3,12 @@
 
 #include "compat.h"
 #include "lego1_export.h"
+#include "legoutils.h"
 #include "mxdsaction.h"
 #include "mxomni.h"
 
+#include <SDL3/SDL_events.h>
+
 class Isle;
 class LegoAnimationManager;
 class LegoBuildingManager;
@@ -185,7 +188,15 @@ public:
 	MxResult StartActionIfUnknown0x13c(MxDSAction& p_dsAction) { return m_unk0x13c ? Start(&p_dsAction) : SUCCESS; }
 	void SetUnknown13c(MxBool p_unk0x13c) { m_unk0x13c = p_unk0x13c; }
 
-	void CloseMainWindow() { PostMessageA(m_windowHandle, WM_CLOSE, 0, 0); }
+	void CloseMainWindow()
+	{
+		SDL_Event event;
+		event.user.type = g_legoSdlEvents.m_windowsMessage;
+		event.user.code = WM_CLOSE;
+		event.user.data1 = NULL;
+		event.user.data2 = NULL;
+		SDL_PushEvent(&event);
+	}
 
 	// SYNTHETIC: LEGO1 0x10058b30
 	// LegoOmni::`scalar deleting destructor'
diff --git a/LEGO1/lego/legoomni/include/legoutils.h b/LEGO1/lego/legoomni/include/legoutils.h
index ef816382..9d95f919 100644
--- a/LEGO1/lego/legoomni/include/legoutils.h
+++ b/LEGO1/lego/legoomni/include/legoutils.h
@@ -4,8 +4,10 @@
 #include "actionsfwd.h"
 #include "decomp.h"
 #include "extra.h"
+#include "lego1_export.h"
 #include "mxtypes.h"
 
+#include <SDL3/SDL_stdinc.h>
 #include <windows.h>
 
 #define WM_ISLE_SETCURSOR 0x5400
@@ -13,6 +15,12 @@
 // name verified by BETA10 0x100d4054
 #define DS_NOT_A_STREAM -1
 
+struct LegoSdlEvents {
+	Uint32 m_windowsMessage;
+};
+
+LEGO1_EXPORT extern LegoSdlEvents g_legoSdlEvents;
+
 enum Cursor {
 	e_cursorArrow = 0,
 	e_cursorBusy,
@@ -58,6 +66,7 @@ void PlayCamAnim(LegoPathActor* p_actor, MxBool p_unused, MxU32 p_location, MxBo
 void FUN_1003eda0();
 MxBool RemoveFromCurrentWorld(const MxAtomId& p_atomId, MxS32 p_id);
 void EnableAnimations(MxBool p_enable);
+void InitSdlEvents();
 void SetAppCursor(Cursor p_cursor);
 MxBool FUN_1003ef60();
 MxBool RemoveFromWorld(MxAtomId& p_entityAtom, MxS32 p_entityId, MxAtomId& p_worldAtom, MxS32 p_worldEntityId);
diff --git a/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp b/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
index 138507ae..602eb746 100644
--- a/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
@@ -103,7 +103,7 @@ inline void LegoCarBuildAnimPresenter::Beta10Inline0x100733d0()
 					if (roi) {
 						const LegoChar* name = roi->GetName();
 
-						if (name && stricmp(wiredName, name) == 0) {
+						if (name && SDL_strcasecmp(wiredName, name) == 0) {
 							if (bvar5) {
 								roi->SetVisibility(TRUE);
 							}
@@ -310,7 +310,7 @@ void LegoCarBuildAnimPresenter::SwapNodesByName(LegoChar* p_name1, LegoChar* p_n
 {
 	char buffer[40];
 
-	if (stricmp(p_name1, p_name2) != 0) {
+	if (SDL_strcasecmp(p_name1, p_name2) != 0) {
 		LegoAnimNodeData* node1 = FindNodeDataByName(m_anim->GetRoot(), p_name1);
 		LegoAnimNodeData* node2 = FindNodeDataByName(m_anim->GetRoot(), p_name2);
 
@@ -468,7 +468,7 @@ LegoAnimNodeData* LegoCarBuildAnimPresenter::FindNodeDataByName(LegoTreeNode* p_
 	if (p_treeNode) {
 		data = (LegoAnimNodeData*) p_treeNode->GetData();
 
-		if (stricmp(data->GetName(), p_name) == 0) {
+		if (SDL_strcasecmp(data->GetName(), p_name) == 0) {
 			return data;
 		}
 
@@ -494,7 +494,7 @@ LegoTreeNode* LegoCarBuildAnimPresenter::FindNodeByName(LegoTreeNode* p_treeNode
 	if (p_treeNode) {
 		data = (LegoAnimNodeData*) p_treeNode->GetData();
 
-		if (stricmp(data->GetName(), p_name) == 0) {
+		if (SDL_strcasecmp(data->GetName(), p_name) == 0) {
 			return p_treeNode;
 		}
 
@@ -519,7 +519,7 @@ void LegoCarBuildAnimPresenter::FUN_10079790(const LegoChar* p_name)
 
 	if (SDL_strcasecmp(m_parts[m_placedPartCount].m_name, p_name) != 0) {
 		for (i = m_placedPartCount + 1; i < m_numberOfParts; i++) {
-			if (stricmp(m_parts[i].m_name, p_name) == 0) {
+			if (SDL_strcasecmp(m_parts[i].m_name, p_name) == 0) {
 				break;
 			}
 		}
@@ -595,7 +595,7 @@ void LegoCarBuildAnimPresenter::FUN_10079a90()
 // FUNCTION: BETA10 0x100724fa
 MxBool LegoCarBuildAnimPresenter::StringEqualsPlatform(const LegoChar* p_string)
 {
-	return stricmp(p_string, "PLATFORM") == 0;
+	return SDL_strcasecmp(p_string, "PLATFORM") == 0;
 }
 
 // FUNCTION: LEGO1 0x10079b40
diff --git a/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp b/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp
index 1829c8cc..2379b2d1 100644
--- a/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp
+++ b/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp
@@ -887,7 +887,7 @@ void LegoAnimationManager::FUN_10060480(const LegoChar* p_characterNames[], MxU3
 {
 	for (MxS32 i = 0; i < p_numCharacterNames; i++) {
 		for (MxS32 j = 0; j < sizeOfArray(g_characters); j++) {
-			if (!stricmp(g_characters[j].m_name, p_characterNames[i])) {
+			if (!SDL_strcasecmp(g_characters[j].m_name, p_characterNames[i])) {
 				g_characters[j].m_unk0x08 = TRUE;
 			}
 		}
diff --git a/LEGO1/lego/legoomni/src/common/legoutils.cpp b/LEGO1/lego/legoomni/src/common/legoutils.cpp
index 8230f4e2..b8f76c6f 100644
--- a/LEGO1/lego/legoomni/src/common/legoutils.cpp
+++ b/LEGO1/lego/legoomni/src/common/legoutils.cpp
@@ -37,6 +37,8 @@
 #include <string.h>
 #include <vec.h>
 
+LegoSdlEvents g_legoSdlEvents;
+
 // FUNCTION: LEGO1 0x1003dd70
 // FUNCTION: BETA10 0x100d3410
 LegoROI* PickROI(MxLong p_x, MxLong p_y)
@@ -565,13 +567,22 @@ void EnableAnimations(MxBool p_enable)
 	AnimationManager()->FUN_100604d0(p_enable);
 }
 
+void InitSdlEvents()
+{
+	static bool g_initialized = false;
+
+	if (!g_initialized) {
+		g_initialized = true;
+		Uint32 event = SDL_RegisterEvents(1);
+		g_legoSdlEvents.m_windowsMessage = event + 0;
+	}
+}
+
 // FUNCTION: LEGO1 0x1003ef40
 void SetAppCursor(Cursor p_cursor)
 {
-	static Uint32 g_userEvent = SDL_RegisterEvents(1);
-
 	SDL_Event event;
-	event.user.type = g_userEvent;
+	event.user.type = g_legoSdlEvents.m_windowsMessage;
 	event.user.code = WM_ISLE_SETCURSOR;
 	event.user.data1 = (void*) p_cursor;
 	SDL_PushEvent(&event);
diff --git a/LEGO1/lego/legoomni/src/entity/legojetskiraceactor.cpp b/LEGO1/lego/legoomni/src/entity/legojetskiraceactor.cpp
index af3dd04c..52e58567 100644
--- a/LEGO1/lego/legoomni/src/entity/legojetskiraceactor.cpp
+++ b/LEGO1/lego/legoomni/src/entity/legojetskiraceactor.cpp
@@ -6,6 +6,7 @@
 #include "mxmisc.h"
 #include "mxvariabletable.h"
 
+#include <SDL3/SDL_stdinc.h>
 #include <vec.h>
 
 DECOMP_SIZE_ASSERT(LegoJetskiRaceActor, 0x1a8)
@@ -123,7 +124,7 @@ void LegoJetskiRaceActor::Animate(float p_time)
 {
 	if (m_unk0x0c == 0) {
 		const LegoChar* raceState = VariableTable()->GetVariable(g_raceState);
-		if (!stricmp(raceState, g_racing)) {
+		if (!SDL_strcasecmp(raceState, g_racing)) {
 			m_unk0x0c = 1;
 			m_lastTime = p_time - 1.0f;
 			m_unk0x1c = p_time;
diff --git a/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp b/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp
index c18367f5..b855e116 100644
--- a/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp
+++ b/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp
@@ -514,11 +514,22 @@ MxBool LegoInputManager::FUN_1005cdf0(LegoEventNotificationParam& p_param)
 	return result;
 }
 
+static Uint32 SDLCALL LegoInputManagerTimerCallback(void* userdata, SDL_TimerID timerID, Uint32 interval)
+{
+	LegoInputManager* inputManager = (LegoInputManager*) userdata;
+	SDL_Event event;
+	event.type = g_legoSdlEvents.m_windowsMessage;
+	event.user.code = WM_TIMER;
+	event.user.data1 = (void*) (uintptr_t) timerID;
+	event.user.data2 = NULL;
+	return interval;
+}
+
 // FUNCTION: LEGO1 0x1005cfb0
 // FUNCTION: BETA10 0x10089fc5
 void LegoInputManager::StartAutoDragTimer()
 {
-	m_autoDragTimerID = ::SetTimer(LegoOmni::GetInstance()->GetWindowHandle(), 1, m_autoDragTime, NULL);
+	m_autoDragTimerID = SDL_AddTimer(m_autoDragTime, LegoInputManagerTimerCallback, this);
 }
 
 // FUNCTION: LEGO1 0x1005cfd0
@@ -526,7 +537,8 @@ void LegoInputManager::StartAutoDragTimer()
 void LegoInputManager::StopAutoDragTimer()
 {
 	if (m_autoDragTimerID) {
-		::KillTimer(LegoOmni::GetInstance()->GetWindowHandle(), m_autoDragTimerID);
+		SDL_RemoveTimer(m_autoDragTimerID);
+		m_autoDragTimerID = 0;
 	}
 }
 
diff --git a/LEGO1/lego/legoomni/src/main/legomain.cpp b/LEGO1/lego/legoomni/src/main/legomain.cpp
index fe7fc015..f5d725be 100644
--- a/LEGO1/lego/legoomni/src/main/legomain.cpp
+++ b/LEGO1/lego/legoomni/src/main/legomain.cpp
@@ -160,6 +160,7 @@ MxResult LegoOmni::Create(MxOmniCreateParam& p_param)
 {
 	MxResult result = FAILURE;
 	AUTOLOCK(m_criticalSection);
+	HWND hWnd = NULL;
 
 	p_param.CreateFlags().CreateObjectFactory(FALSE);
 	p_param.CreateFlags().CreateVideoManager(FALSE);
@@ -191,7 +192,13 @@ MxResult LegoOmni::Create(MxOmniCreateParam& p_param)
 		goto done;
 	}
 
-	if (!(m_inputManager = new LegoInputManager()) || m_inputManager->Create(p_param.GetWindowHandle()) != SUCCESS) {
+	// [library:dinput]
+	hWnd = (HWND) SDL_GetPointerProperty(
+		SDL_GetWindowProperties(MxOmni::GetInstance()->GetWindowHandle()),
+		SDL_PROP_WINDOW_WIN32_HWND_POINTER,
+		NULL
+	);
+	if (!(m_inputManager = new LegoInputManager()) || m_inputManager->Create(hWnd) != SUCCESS) {
 		delete m_inputManager;
 		m_inputManager = NULL;
 		goto done;
@@ -260,6 +267,8 @@ MxResult LegoOmni::Create(MxOmniCreateParam& p_param)
 	SetAppCursor(e_cursorBusy);
 	m_gameState->SetCurrentAct(LegoGameState::e_act1);
 
+	InitSdlEvents();
+
 	result = SUCCESS;
 
 done:
diff --git a/LEGO1/lego/legoomni/src/video/legovideomanager.cpp b/LEGO1/lego/legoomni/src/video/legovideomanager.cpp
index fb7bd950..0b5a9e4f 100644
--- a/LEGO1/lego/legoomni/src/video/legovideomanager.cpp
+++ b/LEGO1/lego/legoomni/src/video/legovideomanager.cpp
@@ -85,7 +85,12 @@ MxResult LegoVideoManager::Create(MxVideoParam& p_videoParam, MxU32 p_frequencyM
 	Mx3DPointFloat dirVec(0.0, 0.0, 1.0);
 	Mx3DPointFloat upVec(0.0, 1.0, 0.0);
 	MxMatrix outMatrix;
-	HWND hwnd = MxOmni::GetInstance()->GetWindowHandle();
+	// [library:ddraw] [library:d3d]
+	HWND hwnd = (HWND) SDL_GetPointerProperty(
+		SDL_GetWindowProperties(MxOmni::GetInstance()->GetWindowHandle()),
+		SDL_PROP_WINDOW_WIN32_HWND_POINTER,
+		NULL
+	);
 	MxS32 bits = p_videoParam.Flags().Get16Bit() ? 16 : 8;
 
 	if (!p_videoParam.GetPalette()) {
@@ -176,7 +181,11 @@ MxResult LegoVideoManager::Create(MxVideoParam& p_videoParam, MxU32 p_frequencyM
 
 	Lego3DManager::CreateStruct createStruct;
 	memset(&createStruct, 0, sizeof(createStruct));
-	createStruct.m_hWnd = LegoOmni::GetInstance()->GetWindowHandle();
+	createStruct.m_hWnd = (HWND) SDL_GetPointerProperty(
+		SDL_GetWindowProperties(MxOmni::GetInstance()->GetWindowHandle()),
+		SDL_PROP_WINDOW_WIN32_HWND_POINTER,
+		NULL
+	);
 	createStruct.m_pDirectDraw = m_pDirectDraw;
 	createStruct.m_pFrontBuffer = m_displaySurface->GetDirectDrawSurface1();
 	createStruct.m_pBackBuffer = m_displaySurface->GetDirectDrawSurface2();
diff --git a/LEGO1/mxdirectx/mxstopwatch.h b/LEGO1/mxdirectx/mxstopwatch.h
index fcd761a6..2cddb341 100644
--- a/LEGO1/mxdirectx/mxstopwatch.h
+++ b/LEGO1/mxdirectx/mxstopwatch.h
@@ -3,6 +3,8 @@
 
 #include "assert.h"
 
+#include <SDL3/SDL_stdinc.h>
+#include <SDL3/SDL_timer.h>
 #include <limits.h> // ULONG_MAX
 #include <math.h>
 #include <windows.h>
@@ -29,73 +31,55 @@ public:
 	double ElapsedSeconds() const;
 
 protected:
-	unsigned long TicksPerSeconds() const;
+	Uint64 TicksPerSeconds() const;
 
 private:
-	LARGE_INTEGER m_startTick; // 0x00
+	Uint64 m_startTick; // 0x00
 	// ??? when we provide LARGE_INTEGER arithmetic, use a
 	//     LARGE_INTEGER m_elapsedTicks rather than m_elapsedSeconds
-	double m_elapsedSeconds;         // 0x0c
-	unsigned long m_ticksPerSeconds; // 0x14
+	double m_elapsedSeconds;  // 0x0c
+	Uint64 m_ticksPerSeconds; // 0x14
 };
 
 // FUNCTION: BETA10 0x100d8ba0
 inline MxStopWatch::MxStopWatch()
 {
 	Reset();
-	m_ticksPerSeconds = TicksPerSeconds();
+	m_ticksPerSeconds = SDL_GetPerformanceCounter();
 }
 
 // FUNCTION: BETA10 0x100d8be0
 inline void MxStopWatch::Start()
 {
-	QueryPerformanceCounter(&m_startTick);
+	m_startTick = SDL_GetPerformanceCounter();
 }
 
 // FUNCTION: BETA10 0x100d8f50
 inline void MxStopWatch::Stop()
 {
-	LARGE_INTEGER endTick;
-	BOOL result;
+	Uint64 endTick;
 
-	result = QueryPerformanceCounter(&endTick);
-	assert(result);
+	endTick = SDL_GetPerformanceCounter();
 
-	if (endTick.HighPart != m_startTick.HighPart) {
-		// LARGE_INTEGER arithmetic not yet provided
-		m_elapsedSeconds = HUGE_VAL_IMMEDIATE;
-	}
-	else {
-		m_elapsedSeconds += ((endTick.LowPart - m_startTick.LowPart) / (double) m_ticksPerSeconds);
-	}
+	m_elapsedSeconds = (double) (endTick - m_startTick) / (double) m_ticksPerSeconds;
 }
 
 // FUNCTION: BETA10 0x100d8c10
 inline void MxStopWatch::Reset()
 {
-	m_startTick.LowPart = 0;
-	m_startTick.HighPart = 0;
-	m_elapsedSeconds = 0;
+	m_startTick = 0;
+	m_elapsedSeconds = 0.;
 }
 
 // FUNCTION: BETA10 0x100d8c60
-inline unsigned long MxStopWatch::TicksPerSeconds() const
+inline Uint64 MxStopWatch::TicksPerSeconds() const
 {
-	LARGE_INTEGER ticksPerSeconds;
-	BOOL result;
+	Uint64 ticksPerSeconds;
 
-	result = QueryPerformanceFrequency(&ticksPerSeconds);
-	assert(result);
+	ticksPerSeconds = SDL_GetPerformanceFrequency();
+	assert(ticksPerSeconds);
 
-	if (ticksPerSeconds.HighPart) {
-		// LARGE_INTEGER arithmetic not yet provided
-
-		// timer is too fast (faster than 32bits/s, i.e. faster than 4GHz)
-		return ULONG_MAX;
-	}
-	else {
-		return ticksPerSeconds.LowPart;
-	}
+	return ticksPerSeconds;
 }
 
 // FUNCTION: BETA10 0x100d9020
diff --git a/LEGO1/omni/include/flic.h b/LEGO1/omni/include/flic.h
index 21d114df..1ed06087 100644
--- a/LEGO1/omni/include/flic.h
+++ b/LEGO1/omni/include/flic.h
@@ -25,7 +25,7 @@ typedef struct {
 	WORD type;                                               // 0x04
 } FLIC_CHUNK;
 
-typedef struct : FLIC_CHUNK {
+typedef struct FLIC_HEADER : FLIC_CHUNK {
 	WORD frames; /* Number of frames in first segment */ // 0x06
 	WORD width; /* FLIC width in pixels */               // 0x08
 	WORD height; /* FLIC height in pixels */             // 0x0a
@@ -35,7 +35,7 @@ typedef struct : FLIC_CHUNK {
 } FLIC_HEADER;
 #pragma pack(pop)
 
-typedef struct : FLIC_CHUNK {
+typedef struct FLIC_FRAME : FLIC_CHUNK {
 	WORD chunks; /* Number of subchunks */                 // 0x06
 	WORD delay; /* Delay in milliseconds */                // 0x08
 	WORD reserved; /* Always zero */                       // 0x0a
diff --git a/LEGO1/omni/include/mxomni.h b/LEGO1/omni/include/mxomni.h
index 55fb4e21..c80ad35b 100644
--- a/LEGO1/omni/include/mxomni.h
+++ b/LEGO1/omni/include/mxomni.h
@@ -6,6 +6,7 @@
 #include "mxcriticalsection.h"
 #include "mxstring.h"
 
+#include <SDL3/SDL_video.h>
 #include <windows.h>
 
 class MxAtomSet;
@@ -61,7 +62,7 @@ public:
 	static void SetInstance(MxOmni* p_instance);
 	static MxBool ActionSourceEquals(MxDSAction* p_action, const char* p_name);
 
-	HWND GetWindowHandle() const { return this->m_windowHandle; }
+	SDL_Window* GetWindowHandle() const { return m_windowHandle; }
 
 	// FUNCTION: BETA10 0x10125100
 	MxObjectFactory* GetObjectFactory() const { return this->m_objectFactory; }
@@ -102,7 +103,7 @@ protected:
 	static MxOmni* g_instance;
 
 	MxString m_mediaPath;                         // 0x08
-	HWND m_windowHandle;                          // 0x18
+	SDL_Window* m_windowHandle;                   // 0x18
 	MxObjectFactory* m_objectFactory;             // 0x1c
 	MxVariableTable* m_variableTable;             // 0x20
 	MxTickleManager* m_tickleManager;             // 0x24
diff --git a/LEGO1/omni/include/mxomnicreateparam.h b/LEGO1/omni/include/mxomnicreateparam.h
index 65a19fd6..7e83e419 100644
--- a/LEGO1/omni/include/mxomnicreateparam.h
+++ b/LEGO1/omni/include/mxomnicreateparam.h
@@ -7,7 +7,7 @@
 #include "mxstring.h"
 #include "mxvideoparam.h"
 
-#include <windows.h>
+#include <SDL3/SDL_video.h>
 
 // VTABLE: LEGO1 0x100dc218
 // VTABLE: BETA10 0x101c1ca8
@@ -15,7 +15,7 @@ class MxOmniCreateParam : public MxParam {
 public:
 	LEGO1_EXPORT MxOmniCreateParam(
 		const char* p_mediaPath,
-		HWND p_windowHandle,
+		SDL_Window* p_windowHandle,
 		MxVideoParam& p_vparam,
 		MxOmniCreateFlags p_flags
 	);
@@ -24,7 +24,7 @@ public:
 	MxOmniCreateFlags& CreateFlags() { return this->m_createFlags; }
 
 	const MxString& GetMediaPath() const { return m_mediaPath; }
-	const HWND GetWindowHandle() const { return m_windowHandle; }
+	SDL_Window* GetWindowHandle() const { return m_windowHandle; }
 	MxVideoParam& GetVideoParam() { return m_videoParam; }
 	const MxVideoParam& GetVideoParam() const { return m_videoParam; }
 
@@ -34,7 +34,7 @@ public:
 
 private:
 	MxString m_mediaPath;            // 0x04
-	HWND m_windowHandle;             // 0x14
+	SDL_Window* m_windowHandle;      // 0x14
 	MxVideoParam m_videoParam;       // 0x18
 	MxOmniCreateFlags m_createFlags; // 0x3c
 };
diff --git a/LEGO1/omni/src/main/mxomnicreateparam.cpp b/LEGO1/omni/src/main/mxomnicreateparam.cpp
index 88235330..37133217 100644
--- a/LEGO1/omni/src/main/mxomnicreateparam.cpp
+++ b/LEGO1/omni/src/main/mxomnicreateparam.cpp
@@ -8,7 +8,7 @@ DECOMP_SIZE_ASSERT(MxOmniCreateParam, 0x40)
 // FUNCTION: BETA10 0x10130b6b
 MxOmniCreateParam::MxOmniCreateParam(
 	const char* p_mediaPath,
-	HWND p_windowHandle,
+	SDL_Window* p_windowHandle,
 	MxVideoParam& p_vparam,
 	MxOmniCreateFlags p_flags
 )
diff --git a/LEGO1/omni/src/video/mxdisplaysurface.cpp b/LEGO1/omni/src/video/mxdisplaysurface.cpp
index 6a2baddf..2bdfbe2d 100644
--- a/LEGO1/omni/src/video/mxdisplaysurface.cpp
+++ b/LEGO1/omni/src/video/mxdisplaysurface.cpp
@@ -139,7 +139,14 @@ MxResult MxDisplaySurface::Create(MxVideoParam& p_videoParam)
 	DDSURFACEDESC ddsd;
 	MxResult result = FAILURE;
 	LPDIRECTDRAW lpDirectDraw = MVideoManager()->GetDirectDraw();
-	HWND hWnd = MxOmni::GetInstance()->GetWindowHandle();
+	SDL_Window* window = MxOmni::GetInstance()->GetWindowHandle();
+	// [library:ddraw]
+	HWND hWnd =
+		(HWND) SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL);
+
+	if (!hWnd) {
+		goto done;
+	}
 
 	m_initialized = TRUE;
 	m_videoParam = p_videoParam;
@@ -842,7 +849,13 @@ void MxDisplaySurface::Display(MxS32 p_left, MxS32 p_top, MxS32 p_left2, MxS32 p
 		}
 		else {
 			MxPoint32 point(0, 0);
-			ClientToScreen(MxOmni::GetInstance()->GetWindowHandle(), (LPPOINT) &point);
+			// [library:ddraw]
+			HWND hWnd = (HWND) SDL_GetPointerProperty(
+				SDL_GetWindowProperties(MxOmni::GetInstance()->GetWindowHandle()),
+				SDL_PROP_WINDOW_WIN32_HWND_POINTER,
+				NULL
+			);
+			ClientToScreen(hWnd, (LPPOINT) &point);
 
 			p_left2 += m_videoParam.GetRect().GetLeft() + point.GetX();
 			p_top2 += m_videoParam.GetRect().GetTop() + point.GetY();
diff --git a/LEGO1/omni/src/video/mxvideomanager.cpp b/LEGO1/omni/src/video/mxvideomanager.cpp
index 9c99f944..e6eab0e6 100644
--- a/LEGO1/omni/src/video/mxvideomanager.cpp
+++ b/LEGO1/omni/src/video/mxvideomanager.cpp
@@ -216,6 +216,7 @@ MxResult MxVideoManager::Create(MxVideoParam& p_videoParam, MxU32 p_frequencyMS,
 {
 	MxBool locked = FALSE;
 	MxResult status = FAILURE;
+	HWND hWnd = NULL;
 
 	m_unk0x60 = TRUE;
 
@@ -237,7 +238,13 @@ MxResult MxVideoManager::Create(MxVideoParam& p_videoParam, MxU32 p_frequencyMS,
 		goto done;
 	}
 
-	if (m_pDirectDraw->SetCooperativeLevel(MxOmni::GetInstance()->GetWindowHandle(), DDSCL_NORMAL) != DD_OK) {
+	// [library:ddraw]
+	hWnd = (HWND) SDL_GetPointerProperty(
+		SDL_GetWindowProperties(MxOmni::GetInstance()->GetWindowHandle()),
+		SDL_PROP_WINDOW_WIN32_HWND_POINTER,
+		NULL
+	);
+	if (m_pDirectDraw->SetCooperativeLevel(hWnd, DDSCL_NORMAL) != DD_OK) {
 		goto done;
 	}
 
diff --git a/util/compat.h b/util/compat.h
index ea2a6507..db768dda 100644
--- a/util/compat.h
+++ b/util/compat.h
@@ -3,7 +3,7 @@
 
 // Various macros to enable compiling with other/newer compilers.
 
-#if defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER >= 1100)
+#if defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER >= 1100) || !defined(_WIN32)
 #define COMPAT_MODE
 #endif