diff --git a/Makefile b/Makefile
index df9823d..99fcad1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,13 @@
 SDL_CFLAGS := $(shell sdl2-config --cflags)
-SDL_LFLAGS := $(shell sdl2-config --libs) -luuid -limm32 -lole32 -loleaut32 -lversion
+SDL_LFLAGS := -lSDL2_ttf $(shell sdl2-config --libs)
 
 CXXFLAGS = -Isrc -Isrc/sys -D_SYSTEM3 -D_DEBUG_CONSOLE -MMD $(SDL_CFLAGS)
 
-LIBS = -lgdi32 -lgdiplus -lwinmm
+LIBS = -lfreetype -lharfbuzz -lglib-2.0 -lpng -lbz2 -lz -lintl -liconv \
+	-luuid -limm32 -lole32 -loleaut32 -lversion -lgdi32 -lgdiplus -lwinmm -lws2_32
 
 OBJS = src/fileio.o \
-	src/winmain.o \
+	src/sdlmain.o \
 	src/sys/ags.o \
 	src/sys/ags_bmp.o \
 	src/sys/ags_cursor.o \
diff --git a/src/common.h b/src/common.h
index bd78886..f85c605 100644
--- a/src/common.h
+++ b/src/common.h
@@ -8,6 +8,7 @@
 #define _COMMON_H_
 
 #include <SDL.h>
+#include <assert.h>
 
 // tchar.h shim
 typedef char _TCHAR;
diff --git a/src/sdlmain.cpp b/src/sdlmain.cpp
new file mode 100644
index 0000000..2bd187d
--- /dev/null
+++ b/src/sdlmain.cpp
@@ -0,0 +1,67 @@
+#include "common.h"
+#include "sys/nact.h"
+
+_TCHAR g_root[_MAX_PATH];
+HINSTANCE g_hinst;
+SDL_Window* g_window;
+
+int main(int argc, char *argv[])
+{
+	// モジュールパス取得
+	GetModuleFileName(NULL, g_root, _MAX_PATH);
+	int p = _tcslen(g_root);
+	while(g_root[p] != _T('\\')) {
+		p--;
+	}
+	g_root[p + 1] = _T('\0');
+
+	g_hinst = (HINSTANCE)::GetModuleHandle(NULL);
+
+	SDL_Init(SDL_INIT_VIDEO);
+
+	// ウィンドウ表示
+	_TCHAR buf[128];
+#if defined(_SYSTEM1)
+	_tcscpy_s(buf, 128, _T("Scenario Decoder SYSTEM1"));
+#elif defined(_SYSTEM2)
+	_tcscpy_s(buf, 128, _T("Scenario Decoder SYSTEM2"));
+#else
+	_tcscpy_s(buf, 128, _T("Scenario Decoder SYSTEM3"));
+#endif
+
+	g_window = SDL_CreateWindow(buf, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 400, 0);
+
+	// MCI 初期化
+	//initialize_mci();
+
+	// system3 初期化
+	NACT* nact = new NACT();
+
+	_TCHAR title[128];
+	if(nact->get_title(title, 128)) {
+#if defined(_SYSTEM1)
+		_stprintf_s(buf, 128, _T("Scenario Decoder SYSTEM1  -  %s"), title);
+#elif defined(_SYSTEM2)
+		_stprintf_s(buf, 128, _T("Scenario Decoder SYSTEM2  -  %s"), title);
+#else
+		_stprintf_s(buf, 128, _T("Scenario Decoder SYSTEM3  -  %s"), title);
+#endif
+		wchar_t wbuf[128];
+		MultiByteToWideChar(CP_ACP, 0, buf, -1, wbuf, 128);
+		WideCharToMultiByte(CP_UTF8, 0, wbuf, -1, buf, 128, NULL, NULL);
+
+		SDL_SetWindowTitle(g_window, buf);
+	}
+
+	nact->mainloop();
+
+	SDL_DestroyWindow(g_window);
+
+	// system3 開放
+	delete nact;
+
+	// MCI 開放
+	//release_mci();
+
+    return 0;
+}
diff --git a/src/sys/ags.cpp b/src/sys/ags.cpp
index 7388d06..83a128c 100644
--- a/src/sys/ags.cpp
+++ b/src/sys/ags.cpp
@@ -7,10 +7,9 @@
 #include "ags.h"
 #include "crc32.h"
 #include "../fileio.h"
-using namespace Gdiplus;
 
 extern _TCHAR g_root[_MAX_PATH];
-extern HWND g_hwnd;
+extern SDL_Window* g_window;
 
 #define SET_TEXT(n, x1, y1, x2, y2, f) { \
 	text_w[n].sx = x1; \
@@ -36,126 +35,37 @@ extern HWND g_hwnd;
 
 AGS::AGS(NACT* parent) : nact(parent)
 {
-	// GDI+������
-	GdiplusStartup(&gdiToken, &gdiSI, NULL);
-
-	HDC hdc = GetDC(g_hwnd);
+	sdlRenderer = SDL_CreateRenderer(g_window, -1, 0);
+	SDL_RenderSetLogicalSize(sdlRenderer, 640, 400);
+	sdlTexture = SDL_CreateTexture(sdlRenderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, 640, 400); // TOOD: pixelformat?
 
 	// DIBSection 8bpp * 3 (�\, ��, ���j���[)
 	for(int i = 0; i < 3; i++) {
-		lpBufScreen[i] = (LPBYTE)GlobalAlloc(GPTR, sizeof(BITMAPINFO));
-		lpDibScreen[i] = (LPBITMAPINFO)lpBufScreen[i];
-		lpDibScreen[i]->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
-		lpDibScreen[i]->bmiHeader.biWidth = 640;
-		lpDibScreen[i]->bmiHeader.biHeight = 480;
-		lpDibScreen[i]->bmiHeader.biPlanes = 1;
-		lpDibScreen[i]->bmiHeader.biBitCount = 32;
-		lpDibScreen[i]->bmiHeader.biCompression = BI_RGB;
-		lpDibScreen[i]->bmiHeader.biSizeImage = 0;
-		lpDibScreen[i]->bmiHeader.biXPelsPerMeter = 0;
-		lpDibScreen[i]->bmiHeader.biYPelsPerMeter = 0;
-		lpDibScreen[i]->bmiHeader.biClrUsed = 0;
-		lpDibScreen[i]->bmiHeader.biClrImportant = 0;
-		hBmpScreen[i] = CreateDIBSection(hdc, lpDibScreen[i], DIB_RGB_COLORS, (PVOID*)&lpBmpScreen[i], NULL, 0);
-		hdcDibScreen[i] = CreateCompatibleDC(hdc);
-		SelectObject(hdcDibScreen[i], hBmpScreen[i]);
-		memset(lpBmpScreen[i], 0, 640 * 480 * sizeof(DWORD));
+		hBmpScreen[i] = SDL_CreateRGBSurface(0, 640, 480, 32, 0, 0, 0, 0);
+		SDL_LockSurface(hBmpScreen[i]);
+
+		// TODO: clear surface
+		// memset(lpBmpScreen[i], 0, 640 * 480 * sizeof(DWORD));
 
 		// ���zVRAM�ւ̃|�C���^�擾
 		for(int j = 0; j < 480; j++) {
-			vram[i][j] = &lpBmpScreen[i][640 * (479 - j)];
+			vram[i][j] = surface_line(hBmpScreen[i], j);
 		}
 	}
 
 	// DIBSection 24bpp * 1 (�ŏI�o�͐�)
-	lpBufDest = (LPBYTE)GlobalAlloc(GPTR, sizeof(BITMAPINFO));
-	lpDibDest = (LPBITMAPINFO)lpBufDest;
-	lpDibDest->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
-	lpDibDest->bmiHeader.biWidth = 640;
-	lpDibDest->bmiHeader.biHeight = 480;
-	lpDibDest->bmiHeader.biPlanes = 1;
-	lpDibDest->bmiHeader.biBitCount = 32;
-	lpDibDest->bmiHeader.biCompression = BI_RGB;
-	lpDibDest->bmiHeader.biSizeImage = 0;
-	lpDibDest->bmiHeader.biXPelsPerMeter = 0;
-	lpDibDest->bmiHeader.biYPelsPerMeter = 0;
-	lpDibDest->bmiHeader.biClrUsed = 0;
-	lpDibDest->bmiHeader.biClrImportant = 0;
-	hBmpDest = CreateDIBSection(hdc, lpDibDest, DIB_RGB_COLORS, (PVOID*)&lpBmpDest, NULL, 0);
-	hdcDibDest = CreateCompatibleDC(hdc);
-	SelectObject(hdcDibDest, hBmpDest);
-	memset(lpBmpDest, 0, 640 * 480 * sizeof(DWORD));
-
-	// DIBSection 24bpp * 1 (�e�L�X�g�`��)
-	lpBufText = (LPBYTE)GlobalAlloc(GPTR, sizeof(BITMAPINFO));
-	lpDibText = (LPBITMAPINFO)lpBufText;
-	lpDibText->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
-	lpDibText->bmiHeader.biWidth = 64;
-	lpDibText->bmiHeader.biHeight = 64;
-	lpDibText->bmiHeader.biPlanes = 1;
-	lpDibText->bmiHeader.biBitCount = 32;
-	lpDibText->bmiHeader.biCompression = BI_RGB;
-	lpDibText->bmiHeader.biSizeImage = 0;
-	lpDibText->bmiHeader.biXPelsPerMeter = 0;
-	lpDibText->bmiHeader.biYPelsPerMeter = 0;
-	lpDibText->bmiHeader.biClrUsed = 0;
-	lpDibText->bmiHeader.biClrImportant = 0;
-	hBmpText = CreateDIBSection(hdc, lpDibText, DIB_RGB_COLORS, (PVOID*)&lpBmpText, NULL, 0);
-	hdcDibText = CreateCompatibleDC(hdc);
-	SelectObject(hdcDibText, hBmpText);
-//	memset(lpBmpText, 0, 64 * 64 * sizeof(DWORD));
-
-	// DIBSection 24bpp * 1 (���j���[�`��)
-	lpBufMenu = (LPBYTE)GlobalAlloc(GPTR, sizeof(BITMAPINFO));
-	lpDibMenu = (LPBITMAPINFO)lpBufMenu;
-	lpDibMenu->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
-	lpDibMenu->bmiHeader.biWidth = 64;
-	lpDibMenu->bmiHeader.biHeight = 64;
-	lpDibMenu->bmiHeader.biPlanes = 1;
-	lpDibMenu->bmiHeader.biBitCount = 32;
-	lpDibMenu->bmiHeader.biCompression = BI_RGB;
-	lpDibMenu->bmiHeader.biSizeImage = 0;
-	lpDibMenu->bmiHeader.biXPelsPerMeter = 0;
-	lpDibMenu->bmiHeader.biYPelsPerMeter = 0;
-	lpDibMenu->bmiHeader.biClrUsed = 0;
-	lpDibMenu->bmiHeader.biClrImportant = 0;
-	hBmpMenu = CreateDIBSection(hdc, lpDibMenu, DIB_RGB_COLORS, (PVOID*)&lpBmpMenu, NULL, 0);
-	hdcDibMenu = CreateCompatibleDC(hdc);
-	SelectObject(hdcDibMenu, hBmpMenu);
-//	memset(lpBmpMenu, 0, 64 * 64 * sizeof(DWORD));
-
-	ReleaseDC(g_hwnd, hdc);
+	hBmpDest = SDL_CreateRGBSurface(0, 640, 480, 32, 0, 0, 0, 0);
+	SDL_LockSurface(hBmpDest);
+	// TODO: clear surface
 
 	// �t�H���g
-	LOGFONT logfont;
-	logfont.lfEscapement = 0;
-	logfont.lfOrientation = 0;
-	logfont.lfWeight = FW_NORMAL;
-	logfont.lfItalic = FALSE;
-	logfont.lfUnderline = FALSE;
-	logfont.lfStrikeOut = FALSE;
-	logfont.lfCharSet = SHIFTJIS_CHARSET;
-	logfont.lfOutPrecision = OUT_TT_PRECIS;
-	logfont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
-	logfont.lfQuality = NONANTIALIASED_QUALITY; //DEFAULT_QUALITY;
-	logfont.lfPitchAndFamily = FIXED_PITCH | FF_DONTCARE;
-	_tcscpy_s(logfont.lfFaceName, LF_FACESIZE, _T("�l�r �S�V�b�N"));
-
-	logfont.lfHeight = 16;
-	logfont.lfWidth = 8;
-	hFont16 = CreateFontIndirect(&logfont);
-	logfont.lfHeight = 24;
-	logfont.lfWidth = 12;
-	hFont24 = CreateFontIndirect(&logfont);
-	logfont.lfHeight = 32;
-	logfont.lfWidth = 16;
-	hFont32 = CreateFontIndirect(&logfont);
-	logfont.lfHeight = 48;
-	logfont.lfWidth = 24;
-	hFont48 = CreateFontIndirect(&logfont);
-	logfont.lfHeight = 64;
-	logfont.lfWidth = 32;
-	hFont64 = CreateFontIndirect(&logfont);
+	TTF_Init();
+	const char fontfile[] = "MTLc3m.ttf";
+	hFont16 = TTF_OpenFont(fontfile, 16);
+	hFont24 = TTF_OpenFont(fontfile, 24);
+	hFont32 = TTF_OpenFont(fontfile, 32);
+	hFont48 = TTF_OpenFont(fontfile, 48);
+	hFont64 = TTF_OpenFont(fontfile, 64);
 
 	// �J�[�\��������
 	for(int i = 0; i < 10; i++) {
@@ -327,7 +237,6 @@ AGS::AGS(NACT* parent) : nact(parent)
 	text_dest_y = text_w[0].sy + 2;
 	text_space = 2;
 	text_font_size = 16;
-	old_text_font_size = 0;
 #if defined(_SYSTEM1)
 	text_font_color = 15 + 16;
 	text_frame_color = 15 + 16;
@@ -342,7 +251,6 @@ AGS::AGS(NACT* parent) : nact(parent)
 	menu_dest_x = 2;
 	menu_dest_y = 0;
 	menu_font_size = 16;
-	old_menu_font_size = 0;
 #if defined(_SYSTEM1)
 	menu_font_color = 15 + 16;
 	menu_frame_color = 15 + 16;
@@ -401,33 +309,18 @@ AGS::~AGS()
 	}
 
 	// �t�H���g�J��
-	DeleteObject(hFont16);
-	DeleteObject(hFont24);
-	DeleteObject(hFont32);
-	DeleteObject(hFont48);
-	DeleteObject(hFont64);
+	TTF_CloseFont(hFont16);
+	TTF_CloseFont(hFont24);
+	TTF_CloseFont(hFont32);
+	TTF_CloseFont(hFont48);
+	TTF_CloseFont(hFont64);
 
-	// DIBSection�J��
+	// surface�J��
 	for(int i = 0; i < 3; i++) {
-		DeleteDC(hdcDibScreen[i]);
-		DeleteObject(hBmpScreen[i]);
-		GlobalFree(lpBufScreen[i]);
+		SDL_FreeSurface(hBmpScreen[i]);
 	}
 
-	DeleteDC(hdcDibDest);
-	DeleteObject(hBmpDest);
-	GlobalFree(lpBufDest);
-
-	DeleteDC(hdcDibText);
-	DeleteObject(hBmpText);
-	GlobalFree(lpBufText);
-
-	DeleteDC(hdcDibMenu);
-	DeleteObject(hBmpMenu);
-	GlobalFree(lpBufMenu);
-
-	// GDI+�J��
-	GdiplusShutdown(gdiToken);
+	SDL_FreeSurface(hBmpDest);
 }
 
 void AGS::set_palette(int index, int r, int g, int b)
@@ -455,12 +348,12 @@ void AGS::set_pixel(int dest, int x, int y, uint8 color)
 
 void AGS::fade_start()
 {
-	memcpy(fader_screen, lpBmpDest, sizeof(fader_screen));
+	memcpy(fader_screen, hBmpDest->pixels, sizeof(fader_screen));
 }
 
 void AGS::fade_end()
 {
-	memcpy(lpBmpDest, fader_screen, sizeof(fader_screen));
+	memcpy(hBmpDest->pixels, fader_screen, sizeof(fader_screen));
 }
 
 void AGS::fade_out(int depth, bool white)
@@ -471,7 +364,7 @@ void AGS::fade_out(int depth, bool white)
 	fader = true;
 
 	for(int y = 0; y < 480; y += 4) {
-		uint32* dest = &lpBmpDest[640 * (479 - y - fy) + fx];
+		uint32* dest = surface_line(hBmpDest, y + fy) + fx;
 		for(int x = 0; x < 640; x += 4) {
 			dest[x] = white ? 0xffffff : 0;
 		}
@@ -489,8 +382,8 @@ void AGS::fade_in(int depth)
 	fader = (depth == 15) ? false : true;
 
 	for(int y = 0; y < 480; y += 4) {
-		uint32* src = &fader_screen[640 * (479 - y - fy) + fx];
-		uint32* dest = &lpBmpDest[640 * (479 - y - fy) + fx];
+		uint32* src = &fader_screen[640 * (y + fy) + fx];
+		uint32* dest = surface_line(hBmpDest, y + fy) + fx;
 		for(int x = 0; x < 640; x += 4) {
 			dest[x] = src[x];
 		}
@@ -505,7 +398,7 @@ void AGS::flush_screen(bool update)
 	if(update) {
 		for(int y = 0; y < screen_height; y++) {
 			uint32* src = vram[0][y];
-			uint32* dest = &lpBmpDest[640 * (479 - y)];
+			uint32* dest = surface_line(hBmpDest, y);
 			for(int x = 0; x < 640; x++) {
 #if defined(_SYSTEM3)
 				// ����݂���񕨌� �t���J���[���ʔ�
@@ -525,7 +418,7 @@ void AGS::draw_screen(int sx, int sy, int width, int height)
 	if(fader) {
 		for(int y = sy; y < (sy + height) && y < 480; y++) {
 			uint32* src = vram[0][y];
-			uint32* dest = &fader_screen[640 * (479 - y)];
+			uint32* dest = &fader_screen[640 * y];
 			for(int x = sx; x < (sx + width) && x < 640; x++) {
 				uint32 a=src[x];
 #if defined(_SYSTEM3)
@@ -540,7 +433,7 @@ void AGS::draw_screen(int sx, int sy, int width, int height)
 	} else {
 		for(int y = sy; y < (sy + height) && y < 480; y++) {
 			uint32* src = vram[0][y];
-			uint32* dest = &lpBmpDest[640 * (479 - y)];
+			uint32* dest = surface_line(hBmpDest, y);
 			for(int x = sx; x < (sx + width) && x < 640; x++) {
 				uint32 a=src[x];
 #if defined(_SYSTEM3)
@@ -558,22 +451,13 @@ void AGS::draw_screen(int sx, int sy, int width, int height)
 
 void AGS::invalidate_screen(int sx, int sy, int width, int height)
 {
-	RECT rect;
-	rect.left = sx;
-	rect.top = sy;
-	rect.right = sx + width;
-	rect.bottom = sy + height;
-
-	InvalidateRect(g_hwnd, &rect, FALSE);
-	UpdateWindow(g_hwnd);
-}
-
-void AGS::update_screen(HDC hdc, int sx, int sy, int width, int height)
-{
-	if(screen_height == 400) {
-		BitBlt(hdc, sx, sy, width, height, hdcDibDest, sx, sy + (scroll - 400), SRCCOPY);
-	} else {
-		BitBlt(hdc, sx, sy, width, height, hdcDibDest, sx, sy, SRCCOPY);
-	}
+	SDL_UnlockSurface(hBmpDest);
+	uint32* pixels = surface_line(hBmpDest, screen_height == 400 ? sy + (scroll - 400) : sy) + sx;
+	SDL_Rect rect = {sx, sy, width, height};
+	SDL_UpdateTexture(sdlTexture, &rect, pixels, hBmpDest->pitch);
+	SDL_RenderClear(sdlRenderer);
+	SDL_RenderCopy(sdlRenderer, sdlTexture, NULL, NULL);
+	SDL_RenderPresent(sdlRenderer);
+	SDL_LockSurface(hBmpDest);
 }
 
diff --git a/src/sys/ags.h b/src/sys/ags.h
index 23652ed..efc8279 100644
--- a/src/sys/ags.h
+++ b/src/sys/ags.h
@@ -8,10 +8,10 @@
 #define _AGS_H_
 
 #include <windows.h>
-#include <gdiplus.h>
 #include <stdio.h>
 #include "../common.h"
 #include "nact.h"
+#include <SDL_ttf.h>
 
 // �t�F�[�h����
 static const int fade_x[16] = {0, 2, 2, 0, 1, 3, 3, 1, 1, 3, 3, 1, 0, 2, 2, 0};
@@ -32,49 +32,29 @@ static inline uint32 SETPALETTE16(uint32 R, uint32 G, uint32 B)
 	return SETPALETTE256(R, G, B);
 }
 
+inline uint32* surface_line(SDL_Surface* surface, int y)
+{
+	return (uint32*)((uint8*)surface->pixels + surface->pitch * y);
+}
+
 class AGS
 {
 protected:
 	NACT* nact;
 private:
-	// GDI+
-	Gdiplus::GdiplusStartupInput gdiSI;
-	ULONG_PTR gdiToken;
+	SDL_Renderer* sdlRenderer;
+	SDL_Texture* sdlTexture;
 
-	// DIBSection 8bpp * 3 (�\, ��, ���j���[)
-	HDC hdcDibScreen[3];
-	HBITMAP hBmpScreen[3];
-	LPBYTE lpBufScreen[3];
-	LPDWORD lpBmpScreen[3];
-	LPBITMAPINFO lpDibScreen[3];
-
-	// DIBSection 24bpp (�ŏI�o�͐�)
-	HDC hdcDibDest;
-	HBITMAP hBmpDest;
-	LPBYTE lpBufDest;
-	LPDWORD lpBmpDest;
-	LPBITMAPINFO lpDibDest;
-
-	// DIBSection 24bpp (�e�L�X�g�`��)
-	HDC hdcDibText;
-	HBITMAP hBmpText;
-	LPBYTE lpBufText;
-	LPDWORD lpBmpText;
-	LPBITMAPINFO lpDibText;
-
-	// DIBSection 24bpp (���j���[�`��)
-	HDC hdcDibMenu;
-	HBITMAP hBmpMenu;
-	LPBYTE lpBufMenu;
-	LPDWORD lpBmpMenu;
-	LPBITMAPINFO lpDibMenu;
+	// Surface
+	SDL_Surface* hBmpScreen[3]; // 8bpp * 3 (�\, ��, ���j���[)
+	SDL_Surface* hBmpDest; // DIBSection 24bpp (�ŏI�o�͐�)
 
 	// �t�H���g
-	HFONT hFont16;
-	HFONT hFont24;
-	HFONT hFont32;
-	HFONT hFont48;
-	HFONT hFont64;
+	TTF_Font* hFont16;
+	TTF_Font* hFont24;
+	TTF_Font* hFont32;
+	TTF_Font* hFont48;
+	TTF_Font* hFont64;
 
 	// �J�[�\��
 	HCURSOR hArrow;
@@ -118,7 +98,6 @@ public:
 	AGS(NACT* parent);
 	~AGS();
 
-	void update_screen(HDC hdc, int sx, int sy, int width, int height);
 	void flush_screen(bool update);
 
 	void load_cg(int page, int transparent);
@@ -172,7 +151,6 @@ public:
 	int text_dest_y;
 	int text_space;
 	int text_font_size;
-	int old_text_font_size;
 	uint8 text_font_color;
 	uint8 text_frame_color;
 	uint8 text_back_color;
@@ -182,7 +160,6 @@ public:
 	int menu_dest_x;
 	int menu_dest_y;
 	int menu_font_size;
-	int old_menu_font_size;
 	uint8 menu_font_color;
 	uint8 menu_frame_color;
 	uint8 menu_back_color;
diff --git a/src/sys/ags_bmp.cpp b/src/sys/ags_bmp.cpp
index 748da72..c1590ca 100644
--- a/src/sys/ags_bmp.cpp
+++ b/src/sys/ags_bmp.cpp
@@ -19,6 +19,8 @@ void AGS::load_bmp(const _TCHAR *file_path)
 	}
 
 	if(extract_cg) {
+		assert(false);
+#if 0
 		// BMP�ǂݍ���
 		WCHAR wszFilePath[_MAX_PATH];
 		MultiByteToWideChar(CP_ACP, 0, file_path, -1, wszFilePath, _MAX_PATH);
@@ -38,5 +40,6 @@ void AGS::load_bmp(const _TCHAR *file_path)
 
 		// BMP�J��
 		delete pBitmap;
+#endif
 	}
 }
diff --git a/src/sys/ags_draw.cpp b/src/sys/ags_draw.cpp
index bd4aef6..a51970b 100644
--- a/src/sys/ags_draw.cpp
+++ b/src/sys/ags_draw.cpp
@@ -87,7 +87,17 @@ void AGS::copy(int sx, int sy, int ex, int ey, int dx, int dy)
 		draw_screen(dx, dy, width, height);
 	}
 #else
-	BitBlt(hdcDibScreen[dest_screen], dx, dy, ex - sx + 1, ey - sy + 1, hdcDibScreen[src_screen], sx, sy, SRCCOPY);
+	int width = ex - sx + 1;
+	int height = ey - sy + 1;
+	SDL_Rect srcrect = {sx, sy, width, height};
+	SDL_Rect destrect = {dx, dy, width, height};
+
+	SDL_UnlockSurface(hBmpScreen[src_screen]);
+	SDL_UnlockSurface(hBmpScreen[dest_screen]);
+	SDL_BlitSurface(hBmpScreen[src_screen], &srcrect, hBmpScreen[dest_screen], &destrect);
+	SDL_LockSurface(hBmpScreen[dest_screen]);
+	SDL_LockSurface(hBmpScreen[src_screen]);
+
 	if(dest_screen == 0) {
 		draw_screen(dx, dy, ex - sx + 1, ey - sy + 1);
 	}
@@ -103,8 +113,15 @@ void AGS::gcopy(int gsc, int gde, int glx, int gly, int gsw)
 	int sy = gsc / 80;
 	int dx = (gde % 80) * 8;
 	int dy = gde / 80;
+	SDL_Rect srcrect = {sx, sy, glx * 8, gly};
+	SDL_Rect destrect = {dx, dy, glx * 8, gly};
+
+	SDL_UnlockSurface(hBmpScreen[src]);
+	SDL_UnlockSurface(hBmpScreen[dest]);
+	SDL_BlitSurface(hBmpScreen[src], &srcrect, hBmpScreen[dest], &destrect);
+	SDL_LockSurface(hBmpScreen[dest]);
+	SDL_LockSurface(hBmpScreen[src]);
 
-	BitBlt(hdcDibScreen[dest], dx, dy, glx * 8, gly, hdcDibScreen[src], sx, sy, SRCCOPY);
 	if(dest == 0) {
 		draw_screen(dx, dy, glx * 8, gly);
 	}
@@ -112,10 +129,13 @@ void AGS::gcopy(int gsc, int gde, int glx, int gly, int gsw)
 
 void AGS::paint(int x, int y, uint8 color)
 {
+	assert(false);
+#if 0
 	HBRUSH hBrush = CreateSolidBrush(RGB(color, color, color));
 	SelectObject(hdcDibScreen[0], hBrush);
 	ExtFloodFill(hdcDibScreen[0], x, y, GetPixel(hdcDibScreen[0], x, y), FLOODFILLSURFACE);
 	draw_screen(0, 0, 640, screen_height);
+#endif
 }
 
 void AGS::draw_box(int index)
diff --git a/src/sys/ags_text.cpp b/src/sys/ags_text.cpp
index 33335cf..f79204c 100644
--- a/src/sys/ags_text.cpp
+++ b/src/sys/ags_text.cpp
@@ -8,43 +8,6 @@
 
 void AGS::draw_text(char string[])
 {
-	// �t�H���g�T�C�Y�̕ύX��A��x�����X�V����
-	if(draw_menu) {
-		if(old_menu_font_size != menu_font_size) {
-			if(menu_font_size == 16) {
-				SelectObject(hdcDibMenu, hFont16);
-			} else if(menu_font_size == 24) {
-				SelectObject(hdcDibMenu, hFont24);
-			} else if(menu_font_size == 32) {
-				SelectObject(hdcDibMenu, hFont32);
-			} else if(menu_font_size == 48) {
-				SelectObject(hdcDibMenu, hFont48);
-			} else if(menu_font_size == 64) {
-				SelectObject(hdcDibMenu, hFont64);
-			}
-			SetBkMode(hdcDibMenu, TRANSPARENT);
-			SetTextColor(hdcDibMenu, RGB(255, 255, 255));
-			old_menu_font_size = menu_font_size;
-		}
-	} else {
-		if(old_text_font_size != text_font_size) {
-			if(text_font_size == 16) {
-				SelectObject(hdcDibText, hFont16);
-			} else if(text_font_size == 24) {
-				SelectObject(hdcDibText, hFont24);
-			} else if(text_font_size == 32) {
-				SelectObject(hdcDibText, hFont32);
-			} else if(text_font_size == 48) {
-				SelectObject(hdcDibText, hFont48);
-			} else if(text_font_size == 64) {
-				SelectObject(hdcDibText, hFont64);
-			}
-			SetBkMode(hdcDibText, TRANSPARENT);
-			SetTextColor(hdcDibText, RGB(255, 255, 255));
-			old_text_font_size = text_font_size;
-		}
-	}
-
 	int p = 0;
 
 	while(string[p] != '\0') {
@@ -92,6 +55,7 @@ void AGS::draw_char(int dest, int dest_x, int dest_y, uint16 code, int size, uin
 {
 	char string[3];
 	int length;
+	SDL_Color white = {0xff, 0xff, 0xff};
 
 	// �p�^�[���擾
 	if(code > 0xff) {
@@ -104,18 +68,32 @@ void AGS::draw_char(int dest, int dest_x, int dest_y, uint16 code, int size, uin
 		string[1] = '\0';
 		length = 1;
 	}
-	memset(draw_menu ? lpBmpMenu : lpBmpText, 0, 64 * 64 * sizeof(DWORD));
-	ExtTextOut(draw_menu ? hdcDibMenu : hdcDibText, 0, 0, NULL, NULL, string, length, NULL);
+	Uint16 buf[2];
+	MultiByteToWideChar(CP_ACP, 0, string, length, (LPWSTR)buf, 2);
+
+	TTF_Font* font = NULL;
+	switch (size) {
+	case 16: font = hFont16; break;
+	case 24: font = hFont24; break;
+	case 32: font = hFont32; break;
+	case 48: font = hFont48; break;
+	case 64: font = hFont64; break;
+	}
+
+	SDL_Surface* fs = TTF_RenderGlyph_Solid(font, buf[0], white);
 
 	// �p�^�[���o��
-	for(int y = 0; y < size && y < 64 && dest_y + y < 480; y++) {
-		uint32 *pattern = draw_menu ? &lpBmpMenu[64 * (63 - y)] : &lpBmpText[64 * (63 - y)];
-		for(int x = 0; x < size && x < 64 && dest_x + x < 640; x++) {
+	// TODO: Blit?
+	for(int y = 0; y < size && y < fs->w && dest_y + y < 480; y++) {
+		uint8 *pattern = (uint8*)surface_line(fs, y);	// FIXME: do not assume 8bpp
+		for(int x = 0; x < size && x < fs->h && dest_x + x < 640; x++) {
 			if(pattern[x] != 0) {
 				vram[dest][dest_y + y][dest_x + x] = color;
 			}
 		}
 	}
+
+	SDL_FreeSurface(fs);
 }
 
 void AGS::draw_gaiji(int dest, int dest_x, int dest_y, uint16 code, int size, uint8 color)
diff --git a/src/sys/ags_window.cpp b/src/sys/ags_window.cpp
index 7b96817..1e2c476 100644
--- a/src/sys/ags_window.cpp
+++ b/src/sys/ags_window.cpp
@@ -94,7 +94,7 @@ void AGS::open_text_window(int index, bool erase)
 		text_w[index - 1].screen_height = height;
 
 		for(int y = 0; y < height && y + sy < 480; y++) {
-			uint32* scr = fader ? &fader_screen[640 * (479 - y - sy) + sx] : &lpBmpDest[640 * (479 - y - sy) + sx];
+			uint32* scr = fader ? &fader_screen[640 * (y + sy) + sx] : surface_line(hBmpDest, y + sy) + sx;
 			for(int x = 0; x < width && x + sx < 640; x++) {
 				uint32 col = vram[0][y + sy][x + sx];
 				if(!(col & 0x80000000)) {
@@ -156,7 +156,7 @@ void AGS::close_text_window(int index, bool update)
 		text_w[index - 1].window_height = height;
 
 		for(int y = 0; y < height && y + sy < 480; y++) {
-			uint32* scr = fader ? &fader_screen[640 * (479 - y - sy) + sx] : &lpBmpDest[640 * (479 - y - sy) + sx];
+			uint32* scr = fader ? &fader_screen[640 * (y + sy) + sx] : surface_line(hBmpDest, y + sy) + sx;
 			for(int x = 0; x < width && x + sx < 640; x++) {
 				uint32 col = vram[0][y + sy][x + sx];
 				if(!(col & 0x80000000)) {
@@ -197,7 +197,8 @@ void AGS::close_text_window(int index, bool update)
 
 void AGS::clear_menu_window()
 {
-	memset(lpBmpScreen[2], menu_back_color, 640 * 480 * sizeof(DWORD));
+	// TODO: use draw function
+	memset(hBmpScreen[2]->pixels, menu_back_color, 640 * 480 * sizeof(DWORD));
 }
 
 void AGS::open_menu_window(int index)
@@ -228,7 +229,7 @@ void AGS::open_menu_window(int index)
 		menu_w[index - 1].screen_height = wheight;
 
 		for(int y = 0; y < wheight && y + wsy < 480; y++) {
-			uint32* scr = fader ? &fader_screen[640 * (479 - y - wsy) + wsx] : &lpBmpDest[640 * (479 - y - wsy) + wsx];
+			uint32* scr = fader ? &fader_screen[640 * (y + wsy) + wsx] : surface_line(hBmpDest, y + wsy) + wsx;
 			for(int x = 0; x < wwidth && x + wsx < 640; x++) {
 				uint32 col = vram[0][y + wsy][x + wsx];
 				if(!(col & 0x80000000)) {
diff --git a/src/sys/mako.cpp b/src/sys/mako.cpp
index 6cbca1b..03672df 100644
--- a/src/sys/mako.cpp
+++ b/src/sys/mako.cpp
@@ -7,8 +7,6 @@
 #include "mako.h"
 #include "dri.h"
 
-extern HWND g_hwnd;
-
 MAKO::MAKO(NACT* parent) : nact(parent)
 {
 	// AMUS.DAT, AMSE.DAT
@@ -107,7 +105,8 @@ void MAKO::play_music(int page)
 	if(current_music) {
 		bool next_cdda = (page < 100 && cd_track[page]) ? true : false;
 		if(cdda_play && !next_cdda) {
-			PostMessage(g_hwnd, WM_USER, 0, 0);
+			// TODO: fix
+			// PostMessage(g_hwnd, WM_USER, 0, 0);
 		} else if(!cdda_play && next_cdda) {
 			params.next_music = 0;
 		}
@@ -119,7 +118,8 @@ void MAKO::play_music(int page)
 
 	if(page < 100 && cd_track[page]) {
 		// CD-DA�ōĐ�
-		PostMessage(g_hwnd, WM_USER, cd_track[page] + 1, 0);
+		// TODO: fix
+		// PostMessage(g_hwnd, WM_USER, cd_track[page] + 1, 0);
 		cdda_play = true;
 	} else {
 		// MIDI�ōĐ�
@@ -133,7 +133,8 @@ void MAKO::stop_music()
 	// ���ݍĐ����̏ꍇ�͒�~����
 	if(current_music) {
 		if(cdda_play) {
-			PostMessage(g_hwnd, WM_USER, 0, 0);
+			// TODO: fix
+			// PostMessage(g_hwnd, WM_USER, 0, 0);
 		} else {
 			params.next_music = 0;
 		}
@@ -165,7 +166,8 @@ void MAKO::notify_mci(int status)
 	if(cdda_play) {
 		current_loop++;
 		if(current_loop < current_max || current_max == 0) {
-			PostMessage(g_hwnd, WM_USER, cd_track[current_music] + 1, 0);
+			// TODO: fix
+			// PostMessage(g_hwnd, WM_USER, cd_track[current_music] + 1, 0);
 		} else {
 			current_music = current_mark = current_loop = 0;
 			cdda_play = false;
diff --git a/src/sys/nact.cpp b/src/sys/nact.cpp
index 87c5220..64ae6e1 100644
--- a/src/sys/nact.cpp
+++ b/src/sys/nact.cpp
@@ -21,13 +21,11 @@
 #include "../fileio.h"
 
 extern _TCHAR g_root[_MAX_PATH];
-extern HWND g_hwnd;
 
 // ������
 
 NACT::NACT()
 {
-	memset(key, 0, sizeof(key));
 	mouse_x = mouse_y = 0;
 
 	// �f�o�b�O�R���\�[���N��
@@ -128,21 +126,11 @@ NACT::NACT()
 		joyGetDevCaps(JOYSTICKID1, &joycaps, sizeof(JOYCAPS));
 	}
 
-	// ���C���X���b�h�N��
-	params.nact = this;
 	params.terminate = false;
-	hThread = SDL_CreateThread(thread, "NactThread", &params);
 }
 
 NACT::~NACT()
 {
-	// ���C���X���b�h�I��
-	params.terminate = true;
-	if(hThread) {
-		SDL_WaitThread(hThread, NULL);
-	}
-	hThread = NULL;
-
 	// �e��N���X�J��
 	if(ags) {
 		delete ags;
@@ -160,16 +148,12 @@ NACT::~NACT()
 	release_console();
 }
 
-int NACT::thread(void* pvoid)
+void NACT::mainloop()
 {
-	volatile PPARAMS pparams;
-	pparams = (PPARAMS)pvoid;
 	int sleep_cnt = 0;
 
-	SDL_SetThreadPriority(SDL_THREAD_PRIORITY_NORMAL);
-
-	while(!pparams->terminate) {
-		pparams->nact->execute();
+	while(!params.terminate) {
+		execute();
 		// 512�R�}���h���s����Sleep(10)
 		if(!(sleep_cnt = (sleep_cnt + 1) & 0x1ff)) {
 			SDL_Delay(10);
@@ -177,7 +161,6 @@ int NACT::thread(void* pvoid)
 			SDL_Delay(0);
 		}
 	}
-	return 0;
 }
 
 // �R�}���h�p�[�T
@@ -192,7 +175,7 @@ void NACT::execute()
 	// �v���I�ȃG���[���� or ����I��
 	if(fatal_error) {
 		if(!post_quit) {
-			PostMessage(g_hwnd, WM_CLOSE, 0, 0);
+			params.terminate = true;
 		}
 		post_quit = true;
 		return;
@@ -437,30 +420,11 @@ int NACT::get_screen_height()
 	return ags->screen_height;
 }
 
-void NACT::update_screen(HDC hdc, int sx, int sy, int width, int height)
-{
-	ags->update_screen(hdc, sx, sy, width, height);
-}
-
 void NACT::notify_mci(int status)
 {
 	mako->notify_mci(status);
 }
 
-void NACT::key_down(int val)
-{
-	key[val] = 1;
-}
-
-void NACT::key_up(int val)
-{
-	if(val == -1) {
-		memset(key, 0, sizeof(key));
-	} else {
-		key[val] = 0;
-	}
-}
-
 void NACT::select_cursor()
 {
 	ags->select_cursor();
diff --git a/src/sys/nact.h b/src/sys/nact.h
index 6c458c6..a6d4bad 100644
--- a/src/sys/nact.h
+++ b/src/sys/nact.h
@@ -215,7 +215,6 @@ private:
 
 	int joy_num;
 	JOYCAPS joycaps;
-	uint8 key[256];
 	int mouse_x, mouse_y;
 
 	uint32 calc_crc32();
@@ -225,14 +224,10 @@ private:
 
 	// ���C���X���b�h
 	typedef struct {
-		NACT* nact;
 		bool terminate;
 	} PARAMS, *PPARAMS;
 	PARAMS params;
 
-	static int thread(void* pvoid);
-	SDL_Thread* hThread;
-
 	// �f�o�b�O���O
 	void initialize_console();
 	void release_console();
@@ -242,12 +237,11 @@ public:
 	NACT();
 	~NACT();
 
+	void mainloop();
+
 	int get_screen_height();
-	void update_screen(HDC hdc, int sx, int sy, int width, int  height);
 	void notify_mci(int status);
 
-	void key_down(int val);
-	void key_up(int val);
 	void select_cursor();
 	void select_sound(int dev);
 
diff --git a/src/sys/nact_input.cpp b/src/sys/nact_input.cpp
index 1dbeb4b..f9f939e 100644
--- a/src/sys/nact_input.cpp
+++ b/src/sys/nact_input.cpp
@@ -6,21 +6,35 @@
 
 #include "nact.h"
 
-extern HWND g_hwnd;
+static bool pump_events()
+{
+	SDL_Event e;
+	while (SDL_PollEvent(&e)) {
+		switch (e.type) {
+		case SDL_QUIT:
+			return true;
+		}
+	}
+	return false;
+}
 
 uint8 NACT::get_key()
 {
 	uint8 val = 0;
 
+	params.terminate = pump_events();
+
 	// �L�[�{�[�h���}�E�X
-	if(key[VK_UP    ] || key[VK_NUMPAD8]) val |= 0x01;
-	if(key[VK_DOWN  ] || key[VK_NUMPAD2]) val |= 0x02;
-	if(key[VK_LEFT  ] || key[VK_NUMPAD4]) val |= 0x04;
-	if(key[VK_RIGHT ] || key[VK_NUMPAD6]) val |= 0x08;
-	if(key[VK_RETURN] || key[VK_LBUTTON]) val |= 0x10;
-	if(key[VK_SPACE ] || key[VK_RBUTTON]) val |= 0x20;
-	if(key[VK_ESCAPE]                   ) val |= 0x40;
-	if(key[VK_TAB   ]                   ) val |= 0x80;
+	const Uint8* key = SDL_GetKeyboardState(NULL);
+	Uint32 mouse = SDL_GetMouseState(NULL, NULL);
+	if(key[SDL_SCANCODE_UP    ] || key[SDL_SCANCODE_KP_8 ]) val |= 0x01;
+	if(key[SDL_SCANCODE_DOWN  ] || key[SDL_SCANCODE_KP_2 ]) val |= 0x02;
+	if(key[SDL_SCANCODE_LEFT  ] || key[SDL_SCANCODE_KP_4 ]) val |= 0x04;
+	if(key[SDL_SCANCODE_RIGHT ] || key[SDL_SCANCODE_KP_6 ]) val |= 0x08;
+	if(key[SDL_SCANCODE_RETURN] || (mouse & SDL_BUTTON(1))) val |= 0x10;
+	if(key[SDL_SCANCODE_SPACE ] || (mouse & SDL_BUTTON(3))) val |= 0x20;
+	if(key[SDL_SCANCODE_ESCAPE]                           ) val |= 0x40;
+	if(key[SDL_SCANCODE_TAB   ]                           ) val |= 0x80;
 
 	// �}�E�X�ړ��ŕ������͂̓T�|�[�g���Ȃ�
 
@@ -44,19 +58,12 @@ uint8 NACT::get_key()
 
 void NACT::get_cursor(int* x, int* y)
 {
-	POINT pt;
-	GetCursorPos(&pt);
-	ScreenToClient(g_hwnd, &pt);
-	*x = pt.x;
-	*y = pt.y;
+	params.terminate = pump_events();
+	SDL_GetMouseState(x, y);
 }
 
 void NACT::set_cursor(int x, int y)
 {
-	POINT pt;
-	pt.x = x;
-	pt.y = y;
-	ClientToScreen(g_hwnd, &pt);
-	SetCursorPos(pt.x, pt.y);
+	// TODO: implement
 }
 
diff --git a/src/sys/nact_sys1.cpp b/src/sys/nact_sys1.cpp
index 66f7eda..9c33ea4 100644
--- a/src/sys/nact_sys1.cpp
+++ b/src/sys/nact_sys1.cpp
@@ -1042,8 +1042,6 @@ void NACT::cmd_l()
 			scenario_page = next_page;
 			scenario_addr = next_addr;
 
-//			ags->old_text_font_size = 0;
-//			ags->old__menu_font_fize = 0;
 			mako->play_music(next_music);
 		}
 		delete fio;
diff --git a/src/sys/nact_sys2.cpp b/src/sys/nact_sys2.cpp
index a2d0873..0983218 100644
--- a/src/sys/nact_sys2.cpp
+++ b/src/sys/nact_sys2.cpp
@@ -1113,8 +1113,6 @@ void NACT::cmd_l()
 			scenario_page = next_page;
 			scenario_addr = next_addr;
 
-//			ags->old_text_font_size = 0;
-//			ags->old__menu_font_fize = 0;
 			mako->play_music(next_music);
 		}
 		delete fio;
diff --git a/src/sys/nact_sys3.cpp b/src/sys/nact_sys3.cpp
index 0186e14..efb40e3 100644
--- a/src/sys/nact_sys3.cpp
+++ b/src/sys/nact_sys3.cpp
@@ -20,7 +20,6 @@
 
 extern _TCHAR g_root[_MAX_PATH];
 extern HINSTANCE g_hinst;
-extern HWND g_hwnd;
 
 void NACT::cmd_calc()
 {
@@ -1033,8 +1032,6 @@ void NACT::cmd_l()
 			scenario_page = next_page;
 			scenario_addr = next_addr;
 
-//			ags->old_text_font_size = 0;
-//			ags->old_menu_font_size = 0;
 			mako->play_music(next_music);
 		}
 		delete fio;
@@ -1549,7 +1546,8 @@ void NACT::cmd_y()
 			break;
 		case 27:
 			tvar_maxlen = param;
-			DialogBoxParam(g_hinst, MAKEINTRESOURCE(IDD_DIALOG1), g_hwnd, TextDialogProc, (LPARAM)this);
+			// TODO: fix
+			// DialogBoxParam(g_hinst, MAKEINTRESOURCE(IDD_DIALOG1), g_hwnd, TextDialogProc, (LPARAM)this);
 			break;
 		case 28:
 			ags->text_space = (param == 0) ? 2 : 0;
@@ -1740,7 +1738,8 @@ void NACT::cmd_y()
 			break;
 		case 232:
 			if(ags->screen_height != param ? 480 : 400) {
-				SendMessage(g_hwnd, WM_USER + 2, param ? 480 : 400, 0);
+				// TODO: fix
+				// SendMessage(g_hwnd, WM_USER + 2, param ? 480 : 400, 0);
 				ags->screen_height = param ? 480 : 400;
 			}
 			break;
diff --git a/src/winmain.cpp b/src/winmain.cpp
deleted file mode 100644
index 9410c71..0000000
--- a/src/winmain.cpp
+++ /dev/null
@@ -1,452 +0,0 @@
-/*
-	ALICE SOFT SYSTEM 3 for Win32
-
-	[ WinMain ]
-*/
-
-#include <windows.h>
-#include <windowsx.h>
-#include <commdlg.h>
-#include <commctrl.h>
-#include <stdio.h>
-#include "common.h"
-#if defined(_SYSTEM1)
-#include "res1/resource.h"
-#elif defined(_SYSTEM2)
-#include "res2/resource.h"
-#else
-#include "res3/resource.h"
-#endif
-#include "sys/nact.h"
-
-int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR szCmdLine, int iCmdShow);
-LRESULT CALLBACK WndProc(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam);
-
-// �t���X�N���[��
-void set_window(HWND hWnd, BOOL full);
-void show_menu_bar(HWND hWnd);
-void hide_menu_bar(HWND hWnd);
-
-BOOL fullscreen_now = FALSE;
-BOOL menuloop_now = FALSE;
-
-// MCI�f�o�C�X
-void initialize_mci();
-void release_mci();
-void play_mci(HWND hWnd, int index);
-void stop_mci();
-
-_TCHAR g_root[_MAX_PATH];
-HINSTANCE g_hinst;
-HWND g_hwnd = NULL;
-HMENU g_hmenu = NULL;
-
-NACT* nact;
-
-int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR szCmdLine, int iCmdShow)
-{
-	// ���W���[���p�X�擾
-	GetModuleFileName(NULL, g_root, _MAX_PATH);
-	int p = _tcslen(g_root);
-	while(g_root[p] != _T('\\')) {
-		p--;
-	}
-	g_root[p + 1] = _T('\0');
-
-	g_hinst = hInstance;
-
-	// �E�B���h�E�̕\���ʒu���擾����
-	RECT rect = {0, 0, 640, 400};
-	AdjustWindowRect(&rect, WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_VISIBLE, TRUE);
-	
-	HDC hdc = CreateDC(_T("DISPLAY"), NULL, NULL, NULL);
-	int width = GetDeviceCaps(hdc, HORZRES);
-	int height = GetDeviceCaps(hdc, VERTRES);
-	int dest_x = (int)((width - (rect.right - rect.left)) / 2);
-	int dest_y = (int)((height - (rect.bottom - rect.top)) / 2);
-//	dest_x = (dest_x < 0) ? 0 : dest_x;
-	dest_y = (dest_y < 0) ? 0 : dest_y;
-
-	// �E�B���h�E����
-	WNDCLASS wndclass;
-	wndclass.style = CS_HREDRAW | CS_VREDRAW;
-	wndclass.lpfnWndProc = (WNDPROC)WndProc;
-	wndclass.cbClsExtra = 0;
-	wndclass.cbWndExtra = 0;
-	wndclass.hInstance = g_hinst;
-	wndclass.hIcon = LoadIcon(g_hinst, MAKEINTRESOURCE(IDI_ICON1));
-	wndclass.hCursor = 0;
-	wndclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
-	wndclass.lpszMenuName = MAKEINTRESOURCE(IDR_MENU1);
-	wndclass.lpszClassName = _T("CWINDOW");
-	RegisterClass(&wndclass);
-
-	// �E�B���h�E�\��
-	_TCHAR buf[128];
-#if defined(_SYSTEM1)
-	_tcscpy_s(buf, 128, _T("Scenario Decoder SYSTEM1"));
-#elif defined(_SYSTEM2)
-	_tcscpy_s(buf, 128, _T("Scenario Decoder SYSTEM2"));
-#else
-	_tcscpy_s(buf, 128, _T("Scenario Decoder SYSTEM3"));
-#endif
-
-	g_hwnd = CreateWindow(_T("CWINDOW"), buf,
-	                      WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_VISIBLE,
-	                      dest_x, dest_y, rect.right - rect.left, rect.bottom - rect.top,
-	                      NULL, NULL, g_hinst, NULL);
-	ShowWindow(g_hwnd, iCmdShow);
-	UpdateWindow(g_hwnd);
-
-	// ���j���[�\��
-	show_menu_bar(g_hwnd);
-
-	// MCI ������
-	initialize_mci();
-
-	// system3 ������
-	nact = new NACT();
-
-	_TCHAR title[128];
-	if(nact->get_title(title, 128)) {
-#if defined(_SYSTEM1)
-		_stprintf_s(buf, 128, _T("Scenario Decoder SYSTEM1  -  %s"), title);
-#elif defined(_SYSTEM2)
-		_stprintf_s(buf, 128, _T("Scenario Decoder SYSTEM2  -  %s"), title);
-#else
-		_stprintf_s(buf, 128, _T("Scenario Decoder SYSTEM3  -  %s"), title);
-#endif
-		SetWindowText(g_hwnd, buf);
-	}
-
-	// ���C�����[�v
-	MSG msg;
-	while(GetMessage(&msg,NULL,0,0)) {
-		TranslateMessage(&msg);
-		DispatchMessage(&msg);
-	}
-
-	// system3 �J��
-	if(nact) {
-		delete nact;
-	}
-
-	// MCI �J��
-	release_mci();
-
-	// �t���X�N���[�����畜�A
-	if(fullscreen_now) {
-		ChangeDisplaySettings(NULL, 0);
-	}
-
-#ifdef _DEBUG
-	// ���������[�N���o
-	_CrtDumpMemoryLeaks();
-#endif
-
-	return msg.wParam;
-}
-
-LRESULT CALLBACK WndProc(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
-{
-	RECT rect;
-	HDC hdc;
-	PAINTSTRUCT ps;
-
-	switch(iMsg) {
-		case WM_CLOSE:
-			if(g_hmenu != NULL && IsMenu(g_hmenu)) {
-				DestroyMenu(g_hmenu);
-			}
-			DestroyWindow(hWnd);
-			break;
-
-		case WM_DESTROY:
-			PostQuitMessage(0);
-			break;
-
-		case WM_PAINT:
-			if(GetUpdateRect(hWnd, &rect, TRUE)) {
-				hdc = BeginPaint(hWnd, &ps);
-				if(nact) {
-					nact->update_screen(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
-				}
-				EndPaint(hWnd, &ps);
-			}
-			return 0;
-
-		case WM_ENTERMENULOOP:
-			menuloop_now = true;
-			break;
-
-		case WM_EXITMENULOOP:
-			if(fullscreen_now && menuloop_now) {
-				hide_menu_bar(hWnd);
-			}
-			menuloop_now = false;
-			break;
-
-		case WM_MOUSEMOVE:
-			if(fullscreen_now && !menuloop_now) {
-				POINTS p = MAKEPOINTS(lParam);
-				if(p.y == 0) {
-					show_menu_bar(hWnd);
-				} else if(p.y > 32) {
-					hide_menu_bar(hWnd);
-				}
-			}
-			break;
-
-		case WM_LBUTTONDOWN:
-			if(nact) {
-				nact->key_down(VK_LBUTTON);
-			}
-			break;
-
-		case WM_LBUTTONUP:
-			if(nact) {
-				nact->key_up(VK_LBUTTON);
-			}
-			break;
-
-		case WM_RBUTTONDOWN:
-			if(nact) {
-				nact->key_down(VK_RBUTTON);
-			}
-			break;
-
-		case WM_RBUTTONUP:
-			if(nact) {
-				nact->key_up(VK_RBUTTON);
-			}
-			break;
-
-		case WM_KILLFOCUS:
-			if(nact) {
-				nact->key_up(-1);
-			}
-			break;
-
-		case WM_KEYDOWN:
-			if(nact) {
-				uint8 code = LOBYTE(wParam);
-				nact->key_down(code);
-			}
-			break;
-
-		case WM_KEYUP:
-			if(nact) {
-				uint8 code = LOBYTE(wParam);
-				nact->key_up(code);
-			}
-			break;
-
-		case WM_SETCURSOR:
-			if(nact) {
-				nact->select_cursor();
-			}
-			break;
-
-		case MM_MCINOTIFY:
-			if(nact) {
-				if(wParam == MCI_NOTIFY_SUCCESSFUL) {
-					nact->notify_mci(0);
-				} else if(wParam == MCI_NOTIFY_FAILURE) {
-					nact->notify_mci(-1);
-				}
-			}
-			break;
-
-		case WM_USER:
-			if(wParam) {
-				play_mci(hWnd, wParam);
-			} else {
-				stop_mci();
-			}
-			break;
-
-		case WM_USER + 2:
-//			if(fullscreen_now) {
-//				set_window(hWnd, FALSE);
-//			}
-			rect.left = rect.top = 0;
-			rect.right = 640;
-			rect.bottom = wParam;
-			AdjustWindowRectEx(&rect, WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_VISIBLE, TRUE, 0);
-			SetWindowPos(hWnd, NULL, 0, 0, rect.right - rect.left, rect.bottom - rect.top, SWP_NOMOVE | SWP_NOZORDER);
-			break;
-
-		case WM_ACTIVATEAPP:
-			if(fullscreen_now) {
-				set_window(hWnd, FALSE);
-			}
-			break;
-
-		case WM_INITMENUPOPUP:
-			if(LOWORD(lParam) == 1) {
-				EnableMenuItem((HMENU)wParam, ID_SCREEN_WINDOW, fullscreen_now ? MF_ENABLED : MF_GRAYED);
-				EnableMenuItem((HMENU)wParam, ID_SCREEN_FULL, fullscreen_now ? MF_GRAYED : MF_ENABLED);
-			} else if(LOWORD(lParam) == 3) {
-				if(nact) {
-					CheckMenuItem((HMENU)wParam, ID_TEXT_SKIP, nact->text_skip_enb ? MF_CHECKED : MF_UNCHECKED);
-					CheckMenuItem((HMENU)wParam, ID_TEXT_WAIT, nact->text_wait_enb ? MF_CHECKED : MF_UNCHECKED);
-				}
-			}
-			break;
-
-		case WM_COMMAND:
-			switch(LOWORD(wParam)) {
-				case ID_RESTART:
-					// restart nact
-					if(nact) {
-						delete nact;
-					}
-					nact = new NACT();
-					
-					// update screen
-					rect.left = rect.top = 0;
-					rect.right = 640;
-					rect.bottom = 480;
-					InvalidateRect(hWnd, &rect, FALSE);
-					UpdateWindow(g_hwnd);
-					break;
-
-				case ID_EXIT:
-					SendMessage(hWnd, WM_CLOSE, 0, 0);
-					break;
-
-				case ID_SCREEN_WINDOW:
-					if(fullscreen_now) {
-						set_window(hWnd, FALSE);
-					}
-					break;
-
-				case ID_SCREEN_FULL:
-					if(!fullscreen_now) {
-						set_window(hWnd, TRUE);
-					}
-					break;
-
-				case ID_SOUND_FM:
-					if(nact) {
-						nact->select_sound(0);
-					}
-					break;
-
-				case ID_SOUND_CD:
-					if(nact) {
-						nact->select_sound(1);
-					}
-					break;
-
-				case ID_TEXT_SKIP:
-					if(nact) {
-						nact->text_skip_enb = !nact->text_skip_enb;
-					}
-					break;
-
-				case ID_TEXT_WAIT:
-					if(nact) {
-						nact->text_wait_enb = !nact->text_wait_enb;
-					}
-					break;
-			}
-			break;
-	}
-	return DefWindowProc(hWnd, iMsg, wParam, lParam) ;
-}
-
-// �t���X�N���[��
-
-void set_window(HWND hWnd, BOOL full)
-{
-	static LONG style = WS_VISIBLE;
-	static int dest_x = 0, dest_y = 0;
-	WINDOWPLACEMENT place;
-	place.length = sizeof(WINDOWPLACEMENT);
-
-	if(full && !fullscreen_now) {
-		// �t���X�N���[���Ɉڍs
-		DEVMODE dev;
-		HDC hdc = GetDC(NULL);
-		ZeroMemory(&dev, sizeof(dev));
-		dev.dmSize = sizeof(dev);
-		dev.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
-		dev.dmBitsPerPel = GetDeviceCaps(hdc, BITSPIXEL);
-		dev.dmPelsWidth = 640;
-		dev.dmPelsHeight = 480;
-		ReleaseDC(NULL, hdc);
-
-		if(ChangeDisplaySettings(&dev, CDS_TEST) == DISP_CHANGE_SUCCESSFUL) {
-			GetWindowPlacement(hWnd, &place);
-			dest_x = place.rcNormalPosition.left;
-			dest_y = place.rcNormalPosition.top;
-			ChangeDisplaySettings(&dev, CDS_FULLSCREEN);
-			style = GetWindowLong(hWnd, GWL_STYLE);
-			SetWindowLong(hWnd, GWL_STYLE, WS_VISIBLE);
-			SetWindowPos(hWnd, HWND_TOP, 0, 0, 640, 480, SWP_SHOWWINDOW);
-			SetCursorPos(320, 200);
-			fullscreen_now = TRUE;
-			hide_menu_bar(hWnd);
-		}
-	} else if(!full && fullscreen_now) {
-		// �t���X�N���[�����畜�A
-		RECT rect = {0, 0, 640, nact ? nact->get_screen_height() : 400};
-//		if(nact) {
-//			rect.bottom = nact->get_screen_height();
-//		}
-		AdjustWindowRect(&rect, WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_VISIBLE, TRUE);
-		ChangeDisplaySettings(NULL, 0);
-		SetWindowLong(hWnd, GWL_STYLE, style);
-		SetWindowPos(hWnd, HWND_TOP, dest_x, dest_y, rect.right - rect.left, rect.bottom - rect.top, SWP_SHOWWINDOW);
-		fullscreen_now = FALSE;
-		show_menu_bar(g_hwnd);
-	}
-}
-
-void show_menu_bar(HWND hWnd)
-{
-	if(!(g_hmenu != NULL && IsMenu(g_hmenu))) {
-		g_hmenu = LoadMenu((HINSTANCE)GetModuleHandle(0), MAKEINTRESOURCE(IDR_MENU1));
-		SetMenu(hWnd, g_hmenu);
-	}
-}
-
-void hide_menu_bar(HWND hWnd)
-{
-	if(g_hmenu != NULL && IsMenu(g_hmenu)) {
-		SetMenu(hWnd, NULL);
-		DestroyMenu(g_hmenu);
-		g_hmenu = NULL;
-	}
-}
-
-// MCI�f�o�C�X
-
-void initialize_mci()
-{
-	mciSendString(_T("open cdaudio"), NULL, 0, NULL);
-	mciSendString(_T("set cdaudio time format tmsf"), NULL, 0, NULL);
-	mciSendString(_T("set cdaudio audio all on"), NULL, 0, NULL);
-	mciSendString(_T("stop cdaudio"), NULL, 0, NULL);
-}
-
-void release_mci()
-{
-	mciSendString(_T("stop cdaudio"), NULL, 0, NULL);
-	mciSendString(_T("close cdaudio"), NULL, 0, NULL);
-}
-
-void play_mci(HWND hWnd, int index)
-{
-	_TCHAR string[_MAX_PATH];
-	
-	_stprintf_s(string, _MAX_PATH, _T("play cdaudio from %d to %d notify"), index, index + 1);
-	mciSendString(string, NULL, 0, hWnd);
-}
-
-void stop_mci()
-{
-	mciSendString(_T("stop cdaudio"), NULL, 0, NULL);
-}
-