Implement WM_QUERYENDSESSION to allow qutting during video playback

SourceS/miniwin.h

@@ -795,6 +795,7 @@ HFILE WINAPI OpenFile(LPCSTR lpFileName, LPOFSTRUCT lpReOpenBuff, UINT uStyle);
 #define WM_DESTROY 0x0002
 #define WM_PAINT 0x000F
 #define WM_CLOSE 0x0010
+#define WM_QUERYENDSESSION 0x0011
 #define WM_ERASEBKGND 0x0014
 #define WM_ACTIVATEAPP 0x001C
 #define WM_QUERYNEWPALETTE 0x030F

SourceX/miniwin.cpp

@@ -664,12 +664,16 @@ LSTATUS RegCloseKeyA(HKEY hKey)
 
 void PostQuitMessage(int nExitCode)
 {
-	DUMMY(); // Possibly use SDL_PumpEvents
+	DUMMY();
+	PostMessageA(NULL, WM_QUERYENDSESSION, 0, 0);
 }
 
 LRESULT DefWindowProcA(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
 {
 	DUMMY_ONCE();
+	if (Msg == WM_QUERYENDSESSION)
+		exit(0);
+
 	return NULL;
 }
 

SourceX/miniwin_msg_sdl.cpp

@@ -177,7 +177,12 @@ WINBOOL WINAPI PeekMessageA(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMs
 	} break;
 	case SDL_TEXTINPUT:
 	case SDL_WINDOWEVENT:
-		return false_avail();
+		if (e.window.event == SDL_WINDOWEVENT_CLOSE) {
+			lpMsg->message = WM_QUERYENDSESSION;
+		} else {
+			return false_avail();
+		}
+		break;
 	default:
 		DUMMY_PRINT("unknown SDL message 0x%X", e.type);
 		return false_avail();