added Close ROM menu command and made Lua scripts stop when opening or closing a ROM

desmume/src/GPU_osd.h

@@ -48,10 +48,16 @@ struct HudStruct
 {
 public:
 	HudStruct()
-		: fps(0)
-		, fps3d(0)
-		, clicked(false)
-	{}
+	{
+		resetTransient();
+	}
+
+	void resetTransient()
+	{
+		fps = 0;
+		fps3d = 0;
+		clicked = false;
+	}
 
 	HudCoordinates SavestateSlots;
 	HudCoordinates FpsDisplay;

desmume/src/windows/main.cpp

@@ -2693,6 +2693,8 @@ static BOOL OpenCore(const char* filename)
 	if(!ObtainFile(filename, LogicalName, PhysicalName, "rom", s_nonRomExtensions, ARRAY_SIZE(s_nonRomExtensions)))
 		return FALSE;
 
+	StopAllLuaScripts();
+
 	if(LoadROM(filename, LogicalName))
 	{
 		romloaded = TRUE;
@@ -2791,6 +2793,17 @@ LRESULT OpenFile()
 	return 0;
 }
 
+void CloseRom()
+{
+	StopAllLuaScripts();
+//	cheatsSearchClose();
+	NDS_FreeROM();
+	romloaded = false;
+	execute = false;
+	Hud.resetTransient();
+	NDS_Reset();
+}
+
 //TODO - async key state? for real?
 int GetModifiers(int key)
 {
@@ -3014,6 +3027,7 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 			DesEnableMenuItem(mainMenu, IDM_FILE_RECORDAVI,    romloaded);
 			DesEnableMenuItem(mainMenu, IDM_FILE_RECORDWAV,    romloaded);
 			DesEnableMenuItem(mainMenu, IDM_RESET,             romloaded);
+			DesEnableMenuItem(mainMenu, IDM_CLOSEROM,          romloaded);
 			DesEnableMenuItem(mainMenu, IDM_SHUT_UP,           romloaded);
 			DesEnableMenuItem(mainMenu, IDM_CHEATS_LIST,       romloaded);
 			DesEnableMenuItem(mainMenu, IDM_CHEATS_SEARCH,     romloaded);
@@ -3525,6 +3539,8 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 			return 0;
 		case IDM_OPEN:
 			return OpenFile();
+		case IDM_CLOSEROM:
+			return CloseRom(),0;
 		case IDM_PRINTSCREEN:
 			HK_PrintScreen(0);
 			return 0;

desmume/src/windows/resource.h

@@ -120,6 +120,7 @@
 #define IDC_PNG                         325
 #define IDC_BMP                         326
 #define IDC_FORMATSTATIC                327
+#define IDM_CLOSEROM                    328
 #define IDM_PATHSETTINGS                350
 #define IDC_ROMPATHEDIT                 351
 #define IDC_BROWSEROMS                  352